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| Meta Title | 5 Sure-Fire Signs Of A Stock Market Bubble | Bankrate |
| Meta Description | The stock market has been on a tear over the past two years. Could we be in a stock market bubble? Here are five signs to look for., The stock market has been on a tear over the past two years. Could we be in a stock market bubble? Here are five signs to look for. |
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| Boilerpipe Text | The stock market has been on a tear for more than two years, with the
S&P 500
increasing roughly 25 percent in both 2023 and 2024. The momentum has continued this year as stocks have continued to âmelt up,â with bullish investors putting a floor under the market.
But with this market melt-up leaving stocks at elevated valuations and the uncertainty around the impact of tariffs on the economy, some investors may be concerned about a potential bubble. In bull markets that seem to go on endlessly, itâs important not to become complacent.
Here are five signs to look for to judge whether weâre in bubble market territory and what weâll likely see if weâre there.
Watch for these tell-tale signs of a stock market bubble
Thereâs an old saying on Wall Street: âNo one rings a bell at the top.â It means that only in retrospect does it become obvious for most market participants that the market has peaked.
But while there may be no bell at the top, observant investors can pick up on many indicators that show when the market is in nosebleed territory. Youâll want to see many of these factors working together to produce a euphoric bubble, as you weigh your options for how to keep your portfolio protected in the event that the hot market finally cools off â or worse, the bubble pops.
1. A story has captured the marketâs imagination
A compelling story is one of the best frameworks for creating a stock bubble. The dot-com bubble of the late 1990s had one: âThe internet changes everything.â The housing bubble of the 2000s had one: âReal estate never declines in price.â Even the 19th centuryâs railway mania promised that the massive benefits of the railroads would transform travel and transportation.
These so-called story stocks promise to transform the world, and while the promised benefits may ultimately arrive, they tend to take a lot longer than the stock promoters would have you believe.
The benefits of the internet eventually arrived, but not before effectively destroying hundreds of dot-com companies that had poor business models. And even the survivors get caught up in the frenzy, with the stocks of eventual leaders such as
Amazon
(AMZN) being bid up to astronomical levels before eventually falling along with the other stocks in the over-hyped sectors.
Invest Search Icon
Where we see it today:
Thereâs no question that the biggest story in the stock market over the past two years has been the rise of artificial intelligence and its potential to impact many industries. AI may change many aspects of how we work and live, but exactly how the future will play out is still unclear.
Cryptocurrency
is another area that has bubbly qualities, in part because there are not underlying cash flows to help analysts determine a coinâs fair value, if it has any at all.
2. Prices rise regardless of news
The story is important because it offers a theme to build investorsâ hopes and dreams on. It also provides a guide for whatâs to come and how the new transformational industry might develop. But what if reality differs from the story? Investors will surely adjust their expectations, right?
In a bubble, itâs as if every bit of information verifies the story, so stock prices rise regardless of the news. A company hits its earnings estimates? The stock climbs. And if it misses earnings estimates by a mile? It still climbs. The story stocks seem unbreakable, and they are for a time.
And so sharp-eyed investors are calibrating reality to the story in order to see if they fit. When stocks rise but the long-term future looks clearly worse, long-term investors should be extra careful.
Invest Search Icon
Where we see it today:
Stocks have seen tremendous gains the past couple of years and excitement seemed to reach new heights following the reelection of President Donald Trump. Investors bid stocks higher with the expectation that deregulation and a more business-friendly administration would result in a surge in growth. Trump even toured the New York Stock Exchange. When
talk of tariffs
picked up, they were initially dismissed as a negotiating tactic. But soon stocks fell as investors became more concerned about the outlook for growth, then they bounced as investors decided tariffs wouldnât be as bad as expected.
3. Other asset prices are soaring, too
Often in a bubble market, itâs not just stocks that are soaring; itâs other assets, too. Flush with cash from their stock successes, a booming economy or easy money, speculators rush out to
buy other highly risky alternative assets
.
During these times you may see the prices of collectibles skyrocketing. Promoters may try to hype up ânew asset classesâ by highlighting how investible sports cards are, or how art from the great masters never seems to decline in value. Assets such as these produce no cash flow and so turning a profit hinges entirely on finding someone else to pay more for them than you did.
And the definition of âinvestibleâ assets continues to grow: luxury handbags, shoes, PokĂŠmon cards, Beanie Babies, wine, video game cartridges,
digital art through NFTs
and the list goes on and on.
Invest Search Icon
Where we see it today:
With thousands of possible examples, cryptocurrencies have seen a flood of interest as speculators and promoters rush to the space to cash in. Cryptocurrency has a total market valuation of around $3.8 trillion as of July 2025, with
Bitcoin
accounting for the lionâs share of that figure. Of course, itâs not just digital assets that have piqued interest â shoes and handbags have seen soaring prices lately, too.
4. New traders say that old investors âdonât get itâ
When the taxi driver, the hairstylist and the grocery clerk are giving you investing tips, itâs a good sign that an investment thesis has spilled over to the mainstream and is attracting less sophisticated retail traders looking for a buck and who are motivated by fear of missing out (FOMO). And they may well succeed â for a period of time.
In the rush to build hype, breathless promoters will say, âThis time itâs different.â But it rarely is.
The time when seasoned investors start to worry the market may have moved unsustainably high is when they see a rush of newer investors into the market and where FOMO is overriding the fundamentals. When new investors are piling into excessively risky investment such as stocks with no earnings track record, or in some cases, no revenue, that is an indicator that trouble could be looming.
â Greg McBride, CFA, Bankrate chief financial analyst
This new breed of trader will explain to you why
Warren Buffett
doesnât âgetâ the new paradigm and that Buffett and other similarly âold schoolâ investors are behind the curve. This new crowd may have been trading for just a few months, but they insist they understand the markets.
Yet it was Buffett who endured similar barbs from inexperienced traders in the dot-com bust and then came through it all. He avoided much of the housing debacle, too. Buffett was perched on a war chest and took advantage of ailing banks that needed cash and confidence during the 2008 financial crisis.
Pro gamblers love popular horse races such as the Kentucky Derby, because they bring easy money to the track, allowing the real handicappers to take it. So it is with investing, too.
Invest Search Icon
Where we see it today:
As investors cheered stocks to new highs in 2024, one notable investor was increasingly taking his chips off the table. Warren Buffettâs
Berkshire Hathaway was mostly a seller of stocks
in 2024, with the companyâs cash position ballooning to north of $300 billion. Buffett frequently advises against timing the market, but itâs worth noting that he couldnât find attractive uses for his large cash pile last year, even as other investors let the good times roll.
5. Stock valuations in the top percentiles
During the last phases of a stock bubble, the prices are all out of proportion to reality. Valuations are in the highest percentiles, as measured historically. By measuring on a relative basis, you get a better sense of how things match up to the bubbles of the past and whether a solid bull run is more likely to burst or continue, albeit with a more modest sense of âanimal spirits.â
Itâs important to recognize that a price rise alone is not sufficient to say something is in a bubble. A stock can rise 100 percent and not be in a bubble if its underlying fundamentals have improved significantly. Or if we start from a low valuation (for example, from the bottom of the pandemic) and then measure after a solid bull run, weâre sure to get gaudy figures that might make you think of a bubble.
However, itâs easy to cherry-pick price increases and say that weâre in a bubble, without looking at the broader context. Stocks could climb for a long while as profits continue to rise.
Invest Search Icon
Where we see it today:
Thereâs no question that stock valuations are high. By one measure, the cyclically adjusted price-to-earnings ratio, the S&P 500 has only traded at a higher valuation twice, in October 2021 and December 1999. In October, Goldman Sachs forecast that equity returns over the next decade would average around 3 percent a year, far from the double-digit returns investors have gotten used to. High valuations donât guarantee an immediate crash or correction, but itâs probably time for investors to lower their expectations for stocks.
What is a stock market bubble?
A stock market bubble is a speculative frenzy when stock prices vastly exceed the fundamental value of the companies underlying them. A market as a whole can also be in a bubble if traders buy assets seemingly regardless of their value. Similarly, individual stocks can be in a bubble when investors bid up their prices well beyond whatâs justified by the underlying business performance.
A stock bubble is not merely overvaluation, which can occur even during normal periods as markets become mildly overextended. Instead, a bubble is a period of massive overvaluation, when speculators become inflamed by âanimal spiritsâ and heedlessly bid up stocks. Often these periods are driven by a new business story that promises to revolutionize the world.
Many investors may find it helpful to
work with a financial advisor
during times of market uncertainty, like when stocks might be in a bubble. You can develop a financial plan that will set you on a path toward reaching your financial goals.
Why should you care about stock market bubbles?
Itâs important to recognize when a stock market bubble may be happening, though itâs not always obvious, except in retrospect. Recognizing a bubble is important because it allows you to:
Avoid losing money.
While many speculators make money during a bubble, only the ones who recognize a bubble has formed actually keep their money and avoid jumping back into the bubbly stocks.
Prepare for a market decline.
If you see a bubble has formed, it can help you navigate your portfolio through it. You can move your investments from high-risk picks to low-risk picks, or even sell out of the market altogether. By knowing that a bubble has formed, you can take steps to limit your exposure to it.
Ready your personal finances.
Sometimes a stock bubble can lead to spillover effects in the broader economy. When a bubble bursts, it often precedes a downturn in the economy, creating a recession that can lead to job loss. So a widespread bubble can be a potential indicator that the economy may be approaching its local peak. You can get your finances in order to help withstand this potential downturn.
Understanding whether a stock market bubble is developing can be useful to help navigate your investments, as well as your personal financial situation.
Examples of a stock market bubble
The U.S. has experienced at least two major market bubbles in the recent past. Bubbles and the financial losses they create tend to scar participants for decades.
The dot-com bubble:
In the period of 1999-2000, the promise of the internet led many traders to buy anything even tangentially connected to it, even if the company did not have a legitimate business plan. While some business behemoths eventually emerged from the bubble â Amazon, for example â many dot-coms quickly became dot-bombs, fading completely into bankruptcy. Other dot-com companies that did survive lost 90 percent or more of their value and never fully recovered from the carnage.
The housing bubble:
In the period following the dot-com bubble, housing began to appreciate rapidly, powered by low interest rates (which existed as a way to soften the effect of the dot-com burst) and the belief that real estate never declines in value. Housing prices appreciated, as did the stocks of many businesses associated with real estate, including construction companies, banks and a variety of specialty finance firms. When the bubble burst and housing prices plummeted, homeowners and banks were left with assets that were worth much less than they were purchased for. The resulting devastation left the economy reeling for many years.
Other classic examples of bubbles include the 17th century Dutch tulip mania, Japanâs real estate and stock bubble in the 1980s, the 18th century South Sea bubble and the U.S. stock market of the 1920s, which
preceded the Great Depression
. In addition, many analysts think cryptocurrency is a bubble because these digital tokens are not backed by any assets or cash flow.
How to avoid losing money when a market bubble bursts
Itâs not always easy to avoid losing money when a market bubble bursts. In many cases, when one sector is massively inflated, it spills over and affects many other industries. For example, in the bear market of 2007-2009, an inflated housing market led to a market-wide decline in stocks. However, many stocks unrelated to housing recovered relatively quickly in the years following the decline, and eventually even many banks and other businesses recovered, too.
Here are a few ways to avoid losing money in a bubble:
Avoid bubble stocks.
This advice is easier said than done when a speculative frenzy grips traders, and youâre derided for not understanding the ânew economy.â
Own stock in non-bubble companies.
One of the best ways to avoid losing money in a bubble, while still being invested, is to own stock in companies that are unrelated to the bubble, if thatâs possible. However, sometimes even the bubble spills over into unrelated companies.
Buy value stocks.
Value stocks are often a good place to be when a market bubble bursts, because they do not have extreme expectations built into their prices. Without those expectations,
value stocks
often donât decline as much as bubble stocks do when the market bursts, and they may even rise as investors shift to them.
Buy solid companies.
By investing in high-performing companies, especially those unrelated to the bubble, you may be able to escape the carnage when the bubble pops.
While it may be possible to dodge the worst when a bubble pops, often itâs not entirely avoidable, because even good stocks can decline in the short term. Thatâs why itâs vital to think long term and
invest for the long term
. Buy solid companies and then take advantage of downturns and buy them when a bubble bursts.
Bottom line
When stocks are soaring, it can be easy to overlook the increasing dangers posed by their valuation. Itâs easy to get caught up in the euphoria, and high prices seem to lead to even higher prices. The party swirls on, until one day it doesnât. So the worldâs best investors focus on controlling their emotions as the market rises (and falls) so that they can coolly recognize when they need to buy and when they need to tread carefully.
Editorial Disclaimer: All investors are advised to conduct their own independent research into investment strategies before making an investment decision. In addition, investors are advised that past investment product performance is no guarantee of future price appreciation.
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# 5 sure-fire signs of a stock market bubble
  
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Published on July 18, 2025 \| 8 min read
Bankrate is always editorially independent. While we adhere to strict editorial integrity , this post may contain references to products from our partners. Here's an explanation for how we make money . Our Bankrate promise is to ensure everything we publish is objective, accurate and trustworthy.

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Table of contents
- [Watch for these tell-tale signs of a stock market bubble](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#signs)
- [What is a stock market bubble?](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#what-is)
- [Why should you care about stock market bubbles?](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#why)
- [Examples of a stock market bubble](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#examples)
- [How to avoid losing money when a market bubble bursts](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#bursts)
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The stock market has been on a tear for more than two years, with the [S\&P 500](https://www.bankrate.com/investing/how-to-buy-sp-500-index-fund/) increasing roughly 25 percent in both 2023 and 2024. The momentum has continued this year as stocks have continued to âmelt up,â with bullish investors putting a floor under the market.
But with this market melt-up leaving stocks at elevated valuations and the uncertainty around the impact of tariffs on the economy, some investors may be concerned about a potential bubble. In bull markets that seem to go on endlessly, itâs important not to become complacent.
Here are five signs to look for to judge whether weâre in bubble market territory and what weâll likely see if weâre there.
##

## Watch for these tell-tale signs of a stock market bubble
Thereâs an old saying on Wall Street: âNo one rings a bell at the top.â It means that only in retrospect does it become obvious for most market participants that the market has peaked.
But while there may be no bell at the top, observant investors can pick up on many indicators that show when the market is in nosebleed territory. Youâll want to see many of these factors working together to produce a euphoric bubble, as you weigh your options for how to keep your portfolio protected in the event that the hot market finally cools off â or worse, the bubble pops.
### 1\. A story has captured the marketâs imagination
A compelling story is one of the best frameworks for creating a stock bubble. The dot-com bubble of the late 1990s had one: âThe internet changes everything.â The housing bubble of the 2000s had one: âReal estate never declines in price.â Even the 19th centuryâs railway mania promised that the massive benefits of the railroads would transform travel and transportation.
These so-called story stocks promise to transform the world, and while the promised benefits may ultimately arrive, they tend to take a lot longer than the stock promoters would have you believe.
The benefits of the internet eventually arrived, but not before effectively destroying hundreds of dot-com companies that had poor business models. And even the survivors get caught up in the frenzy, with the stocks of eventual leaders such as [Amazon](https://www.bankrate.com/investing/how-to-invest-in-stocks/) (AMZN) being bid up to astronomical levels before eventually falling along with the other stocks in the over-hyped sectors.
**Where we see it today:** Thereâs no question that the biggest story in the stock market over the past two years has been the rise of artificial intelligence and its potential to impact many industries. AI may change many aspects of how we work and live, but exactly how the future will play out is still unclear. [Cryptocurrency](https://www.bankrate.com/investing/what-is-cryptocurrency/) is another area that has bubbly qualities, in part because there are not underlying cash flows to help analysts determine a coinâs fair value, if it has any at all.
MORE: [How to turn \$1,000 into \$1 million, according to a top wealth advisor](https://www.bankrate.com/investing/best-ways-to-invest-1000/)
### 2\. Prices rise regardless of news
The story is important because it offers a theme to build investorsâ hopes and dreams on. It also provides a guide for whatâs to come and how the new transformational industry might develop. But what if reality differs from the story? Investors will surely adjust their expectations, right?
In a bubble, itâs as if every bit of information verifies the story, so stock prices rise regardless of the news. A company hits its earnings estimates? The stock climbs. And if it misses earnings estimates by a mile? It still climbs. The story stocks seem unbreakable, and they are for a time.
And so sharp-eyed investors are calibrating reality to the story in order to see if they fit. When stocks rise but the long-term future looks clearly worse, long-term investors should be extra careful.
**Where we see it today:** Stocks have seen tremendous gains the past couple of years and excitement seemed to reach new heights following the reelection of President Donald Trump. Investors bid stocks higher with the expectation that deregulation and a more business-friendly administration would result in a surge in growth. Trump even toured the New York Stock Exchange. When [talk of tariffs](https://www.bankrate.com/taxes/trump-tariffs-explained/) picked up, they were initially dismissed as a negotiating tactic. But soon stocks fell as investors became more concerned about the outlook for growth, then they bounced as investors decided tariffs wouldnât be as bad as expected.
### 3\. Other asset prices are soaring, too
Often in a bubble market, itâs not just stocks that are soaring; itâs other assets, too. Flush with cash from their stock successes, a booming economy or easy money, speculators rush out to [buy other highly risky alternative assets](https://www.bankrate.com/investing/popular-alternative-investments/).
During these times you may see the prices of collectibles skyrocketing. Promoters may try to hype up ânew asset classesâ by highlighting how investible sports cards are, or how art from the great masters never seems to decline in value. Assets such as these produce no cash flow and so turning a profit hinges entirely on finding someone else to pay more for them than you did.
And the definition of âinvestibleâ assets continues to grow: luxury handbags, shoes, PokĂŠmon cards, Beanie Babies, wine, video game cartridges, [digital art through NFTs](https://www.bankrate.com/investing/what-is-an-nft-non-fungible-token/) and the list goes on and on.
**Where we see it today:** With thousands of possible examples, cryptocurrencies have seen a flood of interest as speculators and promoters rush to the space to cash in. Cryptocurrency has a total market valuation of around \$3.8 trillion as of July 2025, with [Bitcoin](https://www.bankrate.com/investing/what-is-bitcoin/) accounting for the lionâs share of that figure. Of course, itâs not just digital assets that have piqued interest â shoes and handbags have seen soaring prices lately, too.
Learn more: [Best ways to get free financial advice](https://www.bankrate.com/investing/financial-advisors/how-to-get-free-financial-advice/)
## 4\. New traders say that old investors âdonât get itâ
When the taxi driver, the hairstylist and the grocery clerk are giving you investing tips, itâs a good sign that an investment thesis has spilled over to the mainstream and is attracting less sophisticated retail traders looking for a buck and who are motivated by fear of missing out (FOMO). And they may well succeed â for a period of time.
In the rush to build hype, breathless promoters will say, âThis time itâs different.â But it rarely is.
> "The time when seasoned investors start to worry the market may have moved unsustainably high is when they see a rush of newer investors into the market and where FOMO is overriding the fundamentals. When new investors are piling into excessively risky investment such as stocks with no earnings track record, or in some cases, no revenue, that is an indicator that trouble could be looming."
>
> â Greg McBride, CFA, Bankrate chief financial analyst
This new breed of trader will explain to you why [Warren Buffett](https://www.bankrate.com/investing/warren-buffett-stocks-berkshire-hathaway-portfolio-13f-filing/) doesnât âgetâ the new paradigm and that Buffett and other similarly âold schoolâ investors are behind the curve. This new crowd may have been trading for just a few months, but they insist they understand the markets.
Yet it was Buffett who endured similar barbs from inexperienced traders in the dot-com bust and then came through it all. He avoided much of the housing debacle, too. Buffett was perched on a war chest and took advantage of ailing banks that needed cash and confidence during the 2008 financial crisis.
Pro gamblers love popular horse races such as the Kentucky Derby, because they bring easy money to the track, allowing the real handicappers to take it. So it is with investing, too.
**Where we see it today:** As investors cheered stocks to new highs in 2024, one notable investor was increasingly taking his chips off the table. Warren Buffettâs [Berkshire Hathaway was mostly a seller of stocks](https://www.bankrate.com/investing/warren-buffett-stocks-berkshire-hathaway-portfolio-13f-filing/) in 2024, with the companyâs cash position ballooning to north of \$300 billion. Buffett frequently advises against timing the market, but itâs worth noting that he couldnât find attractive uses for his large cash pile last year, even as other investors let the good times roll.

### 5\. Stock valuations in the top percentiles
During the last phases of a stock bubble, the prices are all out of proportion to reality. Valuations are in the highest percentiles, as measured historically. By measuring on a relative basis, you get a better sense of how things match up to the bubbles of the past and whether a solid bull run is more likely to burst or continue, albeit with a more modest sense of âanimal spirits.â
Itâs important to recognize that a price rise alone is not sufficient to say something is in a bubble. A stock can rise 100 percent and not be in a bubble if its underlying fundamentals have improved significantly. Or if we start from a low valuation (for example, from the bottom of the pandemic) and then measure after a solid bull run, weâre sure to get gaudy figures that might make you think of a bubble.
However, itâs easy to cherry-pick price increases and say that weâre in a bubble, without looking at the broader context. Stocks could climb for a long while as profits continue to rise.
**Where we see it today:** Thereâs no question that stock valuations are high. By one measure, the cyclically adjusted price-to-earnings ratio, the S\&P 500 has only traded at a higher valuation twice, in October 2021 and December 1999. In October, Goldman Sachs forecast that equity returns over the next decade would average around 3 percent a year, far from the double-digit returns investors have gotten used to. High valuations donât guarantee an immediate crash or correction, but itâs probably time for investors to lower their expectations for stocks.
##
## What is a stock market bubble?
A stock market bubble is a speculative frenzy when stock prices vastly exceed the fundamental value of the companies underlying them. A market as a whole can also be in a bubble if traders buy assets seemingly regardless of their value. Similarly, individual stocks can be in a bubble when investors bid up their prices well beyond whatâs justified by the underlying business performance.
A stock bubble is not merely overvaluation, which can occur even during normal periods as markets become mildly overextended. Instead, a bubble is a period of massive overvaluation, when speculators become inflamed by âanimal spiritsâ and heedlessly bid up stocks. Often these periods are driven by a new business story that promises to revolutionize the world.
Many investors may find it helpful to [work with a financial advisor](https://www.bankrate.com/investing/financial-advisors/how-to-choose-a-financial-advisor/) during times of market uncertainty, like when stocks might be in a bubble. You can develop a financial plan that will set you on a path toward reaching your financial goals.
Get started: [Match with an advisor who can help you achieve your financial goals](https://advisormatch.bankrate.com/questionnaire?am_type=BR&%3Bamp%3Butm_source=BRarticle)
##
## Why should you care about stock market bubbles?
Itâs important to recognize when a stock market bubble may be happening, though itâs not always obvious, except in retrospect. Recognizing a bubble is important because it allows you to:
- **Avoid losing money.** While many speculators make money during a bubble, only the ones who recognize a bubble has formed actually keep their money and avoid jumping back into the bubbly stocks.
- **Prepare for a market decline.** If you see a bubble has formed, it can help you navigate your portfolio through it. You can move your investments from high-risk picks to low-risk picks, or even sell out of the market altogether. By knowing that a bubble has formed, you can take steps to limit your exposure to it.
- **Ready your personal finances.** Sometimes a stock bubble can lead to spillover effects in the broader economy. When a bubble bursts, it often precedes a downturn in the economy, creating a recession that can lead to job loss. So a widespread bubble can be a potential indicator that the economy may be approaching its local peak. You can get your finances in order to help withstand this potential downturn.
Understanding whether a stock market bubble is developing can be useful to help navigate your investments, as well as your personal financial situation.
##
## Examples of a stock market bubble
The U.S. has experienced at least two major market bubbles in the recent past. Bubbles and the financial losses they create tend to scar participants for decades.
- **The dot-com bubble:** In the period of 1999-2000, the promise of the internet led many traders to buy anything even tangentially connected to it, even if the company did not have a legitimate business plan. While some business behemoths eventually emerged from the bubble â Amazon, for example â many dot-coms quickly became dot-bombs, fading completely into bankruptcy. Other dot-com companies that did survive lost 90 percent or more of their value and never fully recovered from the carnage.
- **The housing bubble:** In the period following the dot-com bubble, housing began to appreciate rapidly, powered by low interest rates (which existed as a way to soften the effect of the dot-com burst) and the belief that real estate never declines in value. Housing prices appreciated, as did the stocks of many businesses associated with real estate, including construction companies, banks and a variety of specialty finance firms. When the bubble burst and housing prices plummeted, homeowners and banks were left with assets that were worth much less than they were purchased for. The resulting devastation left the economy reeling for many years.
Other classic examples of bubbles include the 17th century Dutch tulip mania, Japanâs real estate and stock bubble in the 1980s, the 18th century South Sea bubble and the U.S. stock market of the 1920s, which [preceded the Great Depression](https://www.bankrate.com/investing/biggest-stock-market-crashes-in-us-history/). In addition, many analysts think cryptocurrency is a bubble because these digital tokens are not backed by any assets or cash flow.
##
## How to avoid losing money when a market bubble bursts
Itâs not always easy to avoid losing money when a market bubble bursts. In many cases, when one sector is massively inflated, it spills over and affects many other industries. For example, in the bear market of 2007-2009, an inflated housing market led to a market-wide decline in stocks. However, many stocks unrelated to housing recovered relatively quickly in the years following the decline, and eventually even many banks and other businesses recovered, too.
Here are a few ways to avoid losing money in a bubble:
- **Avoid bubble stocks.** This advice is easier said than done when a speculative frenzy grips traders, and youâre derided for not understanding the ânew economy.â
- **Own stock in non-bubble companies.** One of the best ways to avoid losing money in a bubble, while still being invested, is to own stock in companies that are unrelated to the bubble, if thatâs possible. However, sometimes even the bubble spills over into unrelated companies.
- **Buy value stocks.** Value stocks are often a good place to be when a market bubble bursts, because they do not have extreme expectations built into their prices. Without those expectations, [value stocks](https://www.bankrate.com/investing/best-etfs/) often donât decline as much as bubble stocks do when the market bursts, and they may even rise as investors shift to them.
- **Buy solid companies.** By investing in high-performing companies, especially those unrelated to the bubble, you may be able to escape the carnage when the bubble pops.
While it may be possible to dodge the worst when a bubble pops, often itâs not entirely avoidable, because even good stocks can decline in the short term. Thatâs why itâs vital to think long term and [invest for the long term](https://www.bankrate.com/investing/best-long-term-investments/). Buy solid companies and then take advantage of downturns and buy them when a bubble bursts.
## Bottom line
When stocks are soaring, it can be easy to overlook the increasing dangers posed by their valuation. Itâs easy to get caught up in the euphoria, and high prices seem to lead to even higher prices. The party swirls on, until one day it doesnât. So the worldâs best investors focus on controlling their emotions as the market rises (and falls) so that they can coolly recognize when they need to buy and when they need to tread carefully.
*Editorial Disclaimer: All investors are advised to conduct their own independent research into investment strategies before making an investment decision. In addition, investors are advised that past investment product performance is no guarantee of future price appreciation.*
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Written by
[James Royal, Ph.D.](https://www.bankrate.com/authors/james-royal/)
Former Principal Writer, Investing and Wealth Management
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[Read more from James](https://www.bankrate.com/authors/james-royal/)
Former Bankrate principal writer and editor James F. Royal, Ph.D., covers investing and wealth management. His work has been cited by CNBC, the Washington Post, The New York Times and more.

Co-written by
[Brian Baker, CFA](https://www.bankrate.com/authors/brian-baker-cfa/)
Former Senior Writer, Investing and Retirement
- [Connect with Brian Baker, CFA on Twitter](https://twitter.com/briandbaker1)
- [Connect with Brian Baker, CFA on LinkedIn](https://www.linkedin.com/in/brian-baker-cfa-1019779)
- [Get in contact with Brian Baker, CFA via Email](mailto:brbaker@redventures.com)
[Read more from Brian](https://www.bankrate.com/authors/brian-baker-cfa/)
Brian Baker covered investing and retirement for Bankrate. He is a CFA Charterholder and previously worked in equity research at a buyside investment firm. Baker is passionate about helping people make sense of complicated financial topics so that they can better plan for their financial futures.

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Bankrate is always editorially independent. While we adhere to strict editorial integrity , this post may contain references to products from our partners. Here's an explanation for how we make money . Our Bankrate promise is to ensure everything we publish is objective, accurate and trustworthy.
Table of contents
- [Watch for these tell-tale signs of a stock market bubble](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#signs)
- [What is a stock market bubble?](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#what-is)
- [Why should you care about stock market bubbles?](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#why)
- [Examples of a stock market bubble](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#examples)
- [How to avoid losing money when a market bubble bursts](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#bursts)
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Table of contents
- [Watch for these tell-tale signs of a stock market bubble](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#signs)
- [What is a stock market bubble?](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#what-is)
- [Why should you care about stock market bubbles?](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#why)
- [Examples of a stock market bubble](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#examples)
- [How to avoid losing money when a market bubble bursts](https://www.bankrate.com/investing/signs-of-stock-market-bubble/#bursts)
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**APA:** Royal, J., & Baker, CFA, B. (2025, July 18). *5 sure-fire signs of a stock market bubble.* Bankrate. Retrieved April 14, 2026, from https://www.bankrate.com/investing/signs-of-stock-market-bubble/
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| Readable Markdown | The stock market has been on a tear for more than two years, with the [S\&P 500](https://www.bankrate.com/investing/how-to-buy-sp-500-index-fund/) increasing roughly 25 percent in both 2023 and 2024. The momentum has continued this year as stocks have continued to âmelt up,â with bullish investors putting a floor under the market.
But with this market melt-up leaving stocks at elevated valuations and the uncertainty around the impact of tariffs on the economy, some investors may be concerned about a potential bubble. In bull markets that seem to go on endlessly, itâs important not to become complacent.
Here are five signs to look for to judge whether weâre in bubble market territory and what weâll likely see if weâre there.
## Watch for these tell-tale signs of a stock market bubble
Thereâs an old saying on Wall Street: âNo one rings a bell at the top.â It means that only in retrospect does it become obvious for most market participants that the market has peaked.
But while there may be no bell at the top, observant investors can pick up on many indicators that show when the market is in nosebleed territory. Youâll want to see many of these factors working together to produce a euphoric bubble, as you weigh your options for how to keep your portfolio protected in the event that the hot market finally cools off â or worse, the bubble pops.
### 1\. A story has captured the marketâs imagination
A compelling story is one of the best frameworks for creating a stock bubble. The dot-com bubble of the late 1990s had one: âThe internet changes everything.â The housing bubble of the 2000s had one: âReal estate never declines in price.â Even the 19th centuryâs railway mania promised that the massive benefits of the railroads would transform travel and transportation.
These so-called story stocks promise to transform the world, and while the promised benefits may ultimately arrive, they tend to take a lot longer than the stock promoters would have you believe.
The benefits of the internet eventually arrived, but not before effectively destroying hundreds of dot-com companies that had poor business models. And even the survivors get caught up in the frenzy, with the stocks of eventual leaders such as [Amazon](https://www.bankrate.com/investing/how-to-invest-in-stocks/) (AMZN) being bid up to astronomical levels before eventually falling along with the other stocks in the over-hyped sectors.
**Where we see it today:** Thereâs no question that the biggest story in the stock market over the past two years has been the rise of artificial intelligence and its potential to impact many industries. AI may change many aspects of how we work and live, but exactly how the future will play out is still unclear. [Cryptocurrency](https://www.bankrate.com/investing/what-is-cryptocurrency/) is another area that has bubbly qualities, in part because there are not underlying cash flows to help analysts determine a coinâs fair value, if it has any at all.
### 2\. Prices rise regardless of news
The story is important because it offers a theme to build investorsâ hopes and dreams on. It also provides a guide for whatâs to come and how the new transformational industry might develop. But what if reality differs from the story? Investors will surely adjust their expectations, right?
In a bubble, itâs as if every bit of information verifies the story, so stock prices rise regardless of the news. A company hits its earnings estimates? The stock climbs. And if it misses earnings estimates by a mile? It still climbs. The story stocks seem unbreakable, and they are for a time.
And so sharp-eyed investors are calibrating reality to the story in order to see if they fit. When stocks rise but the long-term future looks clearly worse, long-term investors should be extra careful.
**Where we see it today:** Stocks have seen tremendous gains the past couple of years and excitement seemed to reach new heights following the reelection of President Donald Trump. Investors bid stocks higher with the expectation that deregulation and a more business-friendly administration would result in a surge in growth. Trump even toured the New York Stock Exchange. When [talk of tariffs](https://www.bankrate.com/taxes/trump-tariffs-explained/) picked up, they were initially dismissed as a negotiating tactic. But soon stocks fell as investors became more concerned about the outlook for growth, then they bounced as investors decided tariffs wouldnât be as bad as expected.
### 3\. Other asset prices are soaring, too
Often in a bubble market, itâs not just stocks that are soaring; itâs other assets, too. Flush with cash from their stock successes, a booming economy or easy money, speculators rush out to [buy other highly risky alternative assets](https://www.bankrate.com/investing/popular-alternative-investments/).
During these times you may see the prices of collectibles skyrocketing. Promoters may try to hype up ânew asset classesâ by highlighting how investible sports cards are, or how art from the great masters never seems to decline in value. Assets such as these produce no cash flow and so turning a profit hinges entirely on finding someone else to pay more for them than you did.
And the definition of âinvestibleâ assets continues to grow: luxury handbags, shoes, PokĂŠmon cards, Beanie Babies, wine, video game cartridges, [digital art through NFTs](https://www.bankrate.com/investing/what-is-an-nft-non-fungible-token/) and the list goes on and on.
**Where we see it today:** With thousands of possible examples, cryptocurrencies have seen a flood of interest as speculators and promoters rush to the space to cash in. Cryptocurrency has a total market valuation of around \$3.8 trillion as of July 2025, with [Bitcoin](https://www.bankrate.com/investing/what-is-bitcoin/) accounting for the lionâs share of that figure. Of course, itâs not just digital assets that have piqued interest â shoes and handbags have seen soaring prices lately, too.
## 4\. New traders say that old investors âdonât get itâ
When the taxi driver, the hairstylist and the grocery clerk are giving you investing tips, itâs a good sign that an investment thesis has spilled over to the mainstream and is attracting less sophisticated retail traders looking for a buck and who are motivated by fear of missing out (FOMO). And they may well succeed â for a period of time.
In the rush to build hype, breathless promoters will say, âThis time itâs different.â But it rarely is.
> "The time when seasoned investors start to worry the market may have moved unsustainably high is when they see a rush of newer investors into the market and where FOMO is overriding the fundamentals. When new investors are piling into excessively risky investment such as stocks with no earnings track record, or in some cases, no revenue, that is an indicator that trouble could be looming."
>
> â Greg McBride, CFA, Bankrate chief financial analyst
This new breed of trader will explain to you why [Warren Buffett](https://www.bankrate.com/investing/warren-buffett-stocks-berkshire-hathaway-portfolio-13f-filing/) doesnât âgetâ the new paradigm and that Buffett and other similarly âold schoolâ investors are behind the curve. This new crowd may have been trading for just a few months, but they insist they understand the markets.
Yet it was Buffett who endured similar barbs from inexperienced traders in the dot-com bust and then came through it all. He avoided much of the housing debacle, too. Buffett was perched on a war chest and took advantage of ailing banks that needed cash and confidence during the 2008 financial crisis.
Pro gamblers love popular horse races such as the Kentucky Derby, because they bring easy money to the track, allowing the real handicappers to take it. So it is with investing, too.
**Where we see it today:** As investors cheered stocks to new highs in 2024, one notable investor was increasingly taking his chips off the table. Warren Buffettâs [Berkshire Hathaway was mostly a seller of stocks](https://www.bankrate.com/investing/warren-buffett-stocks-berkshire-hathaway-portfolio-13f-filing/) in 2024, with the companyâs cash position ballooning to north of \$300 billion. Buffett frequently advises against timing the market, but itâs worth noting that he couldnât find attractive uses for his large cash pile last year, even as other investors let the good times roll.
### 5\. Stock valuations in the top percentiles
During the last phases of a stock bubble, the prices are all out of proportion to reality. Valuations are in the highest percentiles, as measured historically. By measuring on a relative basis, you get a better sense of how things match up to the bubbles of the past and whether a solid bull run is more likely to burst or continue, albeit with a more modest sense of âanimal spirits.â
Itâs important to recognize that a price rise alone is not sufficient to say something is in a bubble. A stock can rise 100 percent and not be in a bubble if its underlying fundamentals have improved significantly. Or if we start from a low valuation (for example, from the bottom of the pandemic) and then measure after a solid bull run, weâre sure to get gaudy figures that might make you think of a bubble.
However, itâs easy to cherry-pick price increases and say that weâre in a bubble, without looking at the broader context. Stocks could climb for a long while as profits continue to rise.
**Where we see it today:** Thereâs no question that stock valuations are high. By one measure, the cyclically adjusted price-to-earnings ratio, the S\&P 500 has only traded at a higher valuation twice, in October 2021 and December 1999. In October, Goldman Sachs forecast that equity returns over the next decade would average around 3 percent a year, far from the double-digit returns investors have gotten used to. High valuations donât guarantee an immediate crash or correction, but itâs probably time for investors to lower their expectations for stocks.
## What is a stock market bubble?
A stock market bubble is a speculative frenzy when stock prices vastly exceed the fundamental value of the companies underlying them. A market as a whole can also be in a bubble if traders buy assets seemingly regardless of their value. Similarly, individual stocks can be in a bubble when investors bid up their prices well beyond whatâs justified by the underlying business performance.
A stock bubble is not merely overvaluation, which can occur even during normal periods as markets become mildly overextended. Instead, a bubble is a period of massive overvaluation, when speculators become inflamed by âanimal spiritsâ and heedlessly bid up stocks. Often these periods are driven by a new business story that promises to revolutionize the world.
Many investors may find it helpful to [work with a financial advisor](https://www.bankrate.com/investing/financial-advisors/how-to-choose-a-financial-advisor/) during times of market uncertainty, like when stocks might be in a bubble. You can develop a financial plan that will set you on a path toward reaching your financial goals.
## Why should you care about stock market bubbles?
Itâs important to recognize when a stock market bubble may be happening, though itâs not always obvious, except in retrospect. Recognizing a bubble is important because it allows you to:
- **Avoid losing money.** While many speculators make money during a bubble, only the ones who recognize a bubble has formed actually keep their money and avoid jumping back into the bubbly stocks.
- **Prepare for a market decline.** If you see a bubble has formed, it can help you navigate your portfolio through it. You can move your investments from high-risk picks to low-risk picks, or even sell out of the market altogether. By knowing that a bubble has formed, you can take steps to limit your exposure to it.
- **Ready your personal finances.** Sometimes a stock bubble can lead to spillover effects in the broader economy. When a bubble bursts, it often precedes a downturn in the economy, creating a recession that can lead to job loss. So a widespread bubble can be a potential indicator that the economy may be approaching its local peak. You can get your finances in order to help withstand this potential downturn.
Understanding whether a stock market bubble is developing can be useful to help navigate your investments, as well as your personal financial situation.
## Examples of a stock market bubble
The U.S. has experienced at least two major market bubbles in the recent past. Bubbles and the financial losses they create tend to scar participants for decades.
- **The dot-com bubble:** In the period of 1999-2000, the promise of the internet led many traders to buy anything even tangentially connected to it, even if the company did not have a legitimate business plan. While some business behemoths eventually emerged from the bubble â Amazon, for example â many dot-coms quickly became dot-bombs, fading completely into bankruptcy. Other dot-com companies that did survive lost 90 percent or more of their value and never fully recovered from the carnage.
- **The housing bubble:** In the period following the dot-com bubble, housing began to appreciate rapidly, powered by low interest rates (which existed as a way to soften the effect of the dot-com burst) and the belief that real estate never declines in value. Housing prices appreciated, as did the stocks of many businesses associated with real estate, including construction companies, banks and a variety of specialty finance firms. When the bubble burst and housing prices plummeted, homeowners and banks were left with assets that were worth much less than they were purchased for. The resulting devastation left the economy reeling for many years.
Other classic examples of bubbles include the 17th century Dutch tulip mania, Japanâs real estate and stock bubble in the 1980s, the 18th century South Sea bubble and the U.S. stock market of the 1920s, which [preceded the Great Depression](https://www.bankrate.com/investing/biggest-stock-market-crashes-in-us-history/). In addition, many analysts think cryptocurrency is a bubble because these digital tokens are not backed by any assets or cash flow.
## How to avoid losing money when a market bubble bursts
Itâs not always easy to avoid losing money when a market bubble bursts. In many cases, when one sector is massively inflated, it spills over and affects many other industries. For example, in the bear market of 2007-2009, an inflated housing market led to a market-wide decline in stocks. However, many stocks unrelated to housing recovered relatively quickly in the years following the decline, and eventually even many banks and other businesses recovered, too.
Here are a few ways to avoid losing money in a bubble:
- **Avoid bubble stocks.** This advice is easier said than done when a speculative frenzy grips traders, and youâre derided for not understanding the ânew economy.â
- **Own stock in non-bubble companies.** One of the best ways to avoid losing money in a bubble, while still being invested, is to own stock in companies that are unrelated to the bubble, if thatâs possible. However, sometimes even the bubble spills over into unrelated companies.
- **Buy value stocks.** Value stocks are often a good place to be when a market bubble bursts, because they do not have extreme expectations built into their prices. Without those expectations, [value stocks](https://www.bankrate.com/investing/best-etfs/) often donât decline as much as bubble stocks do when the market bursts, and they may even rise as investors shift to them.
- **Buy solid companies.** By investing in high-performing companies, especially those unrelated to the bubble, you may be able to escape the carnage when the bubble pops.
While it may be possible to dodge the worst when a bubble pops, often itâs not entirely avoidable, because even good stocks can decline in the short term. Thatâs why itâs vital to think long term and [invest for the long term](https://www.bankrate.com/investing/best-long-term-investments/). Buy solid companies and then take advantage of downturns and buy them when a bubble bursts.
## Bottom line
When stocks are soaring, it can be easy to overlook the increasing dangers posed by their valuation. Itâs easy to get caught up in the euphoria, and high prices seem to lead to even higher prices. The party swirls on, until one day it doesnât. So the worldâs best investors focus on controlling their emotions as the market rises (and falls) so that they can coolly recognize when they need to buy and when they need to tread carefully.
*Editorial Disclaimer: All investors are advised to conduct their own independent research into investment strategies before making an investment decision. In addition, investors are advised that past investment product performance is no guarantee of future price appreciation.*
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