Are We in Bubble Territory?

Will the Stock Market Go Down in 2026? How to Prepare for Investing Success in 2026.

Investing today feels harder than ever. The sheer volume of financial content—blogs, videos, podcasts—makes it challenging for the average investor to separate facts from opinion and find trustworthy sources.

This article isn’t about criticizing other financial voices—many are excellent. Instead, my goal is to provide context and clarity on what’s dominating headlines and how it might impact your investment decisions. Throughout the article, I’ll reference a few sources that I believe are trustworthy and worth your time if you are interested in learning more.

You’ve probably seen or heard statements like:

“The stock market is overvalued!” “We’re in a bubble!” “The crash is coming!

Let’s break down these concerns and focus on what really matters to long-term investors. Below are a few common questions and investing topics we’ve discussed recently at Leading Edge Financial Planning. (You can also tune in to the Pilot Money Guys podcast on the same topic by clicking here.)

Are we at all-time market highs?

Yes! As of this writing, December 5, 2025, the AP News headline was: “The S&P 500 added 0.2% and finished just 0.3% shy of its record closing level, which was set in October. It had briefly topped the mark during the day, before paring its gain.”

However, this is not the right question. In fact, I would say it is practically irrelevant. All-time highs are normal in a healthy, growing stock market. Don’t let headlines about market highs (or lows) derail your strategy.

Another related question is, “Since we’re at all-time highs, should I hold off on putting new money into the stock market?”

Although stock markets can decline at any time, investors often miss out on investment growth trying to time the next bear market or correction. Timing the market is a losing game—successful investors know luck plays a bigger role than skill in short-term predictions.

In fact, if you want to give timing the S&P 500 a try, click here to play the Market Timing Game. In the simulation, you are given a 3-year market period from sometime in history (data starts January 1, 1950 and goes through the most recent market price, as prices are updated daily). You start fully invested in the market and can trade out of (and into) the market if you feel like the market will fall (or rise). The goal is to see if you can beat the market index returns.  

When I played the game, I sold after eleven market highs and then subsequently missed out on the next eight hoping the stock market would crash so I could re-deploy my virtual cash back into the market. Sound familiar?!?

Another great story about why market highs are a distraction to your long-term investing strategy is one written by one of my favorite bloggers, Ben Carlson. He wrote an entertaining article in his blog, A Wealth of Commons Sense, about a fictional character named Bob. Bob is the world’s worst market time. Somehow, Bob ONLY invests his money at stock market highs starting in 1970. What if You Only Invested at Market Peaks? – A Wealth of Common Sense

In case you don’t have time to check out the article, here are a few of the lessons from Bob’s wild investment journey from Ben Carlson’s article:

  1. “Bob ended up being a successful investor despite his terrible market timing because he was a diligent saver and planned out his savings in advance. He never wavered on his savings goals and increased the amount he saved over time.
  2. Bob allowed his investments to compound through the decades by never selling out of the market over his 40+ years of investing. He gave himself a really long runway.
  3. Long-term thinking has been rewarded in the past and unless you think the world or innovation is coming to an end, it should be rewarded in the future.
  4. Losses are part of the deal when investing in stocks. How you react to those losses is one of the biggest determinants of your investment performance.”

So, what, if anything, do new market highs mean for investors in 2026?

  • Use caution for the desire to buy speculative investments solely due to stock price increase. The same feeling will lead you to sell when the price declines.
    • A record high is just one milestone in the market’s long journey.
  • Disciplined long-term investing beats chasing clickbait headlines and succumbing to FOMO (fear of missing out) investing.
  • Stay diversified and have a plan to rebalance your portfolio.
  • Many investors fall into the trap of trying to predict the markets’ ups and downs. This often leads to greater losses than the corrections themselves.
    • Famous Fidelity investor Peter Lynch said, “Far more money has been lost by investors trying to anticipate corrections than has been lost in all the corrections combined.” 

Will the stock market go down next year?

The corollary to the “market highs” discussion is the following statement: “Since the market has reached all-time highs, clearly it will go down next year!” (See my results to the S&P 500 timing game previously mentioned.) However, the answer to this question is an easy one—yes! The stock market will most likely decline in 2026 at some point within the calendar year. In fact, according to J.P. Morgan Asset Management, the S&P 500 averages an intra-year decline of 14.1% annually. Despite this, annual (calendar year) returns were positive in 34 of 46 years from 1980 to 2024.

(Intra-year drops refer to the largest peak-to-trough decline during the year.)

Don’t forget that volatility and uncertainty are a normal part of investing in stocks. It may feel uncomfortable when the risk pendulum swings rapidly from fears of inflation to fears of an impending recession. But market moves like those remind us that pullbacks are a feature—not a bug—of investing. Furthermore, volatility and uncertainty are the very reasons we have the potential to earn a long-term investment return that may outpace inflation.  

Are we in a stock market bubble?

No one knows for sure. Some indicators suggest parts of the market are overvalued, especially in AI-related sectors. History reminds us that every bubble looks different—the tech bubble of the late ’90s and the housing bubble were unique, and the next one will be too.

However, we are starting to see more indications that certain parts of the stock market may in fact be overvalued. If you google, like I did, “are we in a bubble?”, you will find dozens of articles from some of the most reliable news sources (click here and here) that provide compelling arguments that the stock market is either at or near valuation extremes.

The well-known investment firm GMO recently released its November 2025 quarterly newsletter, featuring an article by Ben Inker titled “It’s Probably a Bubble, But There Is Plenty Else to Invest In.” Inker draws interesting comparisons between the current potential AI bubble and past market bubbles, with a particular focus on the tech bubble of the late 1990s. 

In the article Ben Inker says, “Equity investors are bidding up the value of giant companies by hundreds of billions of dollars due to investment deals with OpenAI, a company whose revenues would have to rise a hundredfold to make good on its promises. Investors are so desperate to get in early on the next big thing that they’ve bid up the prices of quantum computing stocks 1200% or more over the past year, and at valuations that make Palantir look like a value stock…”

The good news, he says is… “that it’s one (bubble) that allows an agnostic investor to build a portfolio that can…do just fine if all (other non-AI) assets deliver normal returns.”

Finally, earlier this year (April 2025) the tariff Liberation Day caused significant market volatility. That’s financial-speak for; it was really scary for a few weeks! During that time, Ben Carlson wrote a great article about how to think about and prepare for stock market downturns and potential bear markets.

From Ben Carlson’s “A Wealth of Common Sense”

If I knew what was going to happen, there would be no reason to diversify. My plan for surviving chaotic markets looks like this…

  • Automate good decisions ahead of time.
  • Follow my investment plan even when it feels uncomfortable.
  • Diversify my portfolio to account for different market environments.
  • Don’t obsess over short-term market movements.
  • Don’t let short-term volatility dictate how I live my life.
  • Every investor needs their own survival plan. The most important thing is having a plan in the first place.”


I’ll leave you with a thought-provoking quote from Ernest Hemingway’s 1926 novel,
The Sun Also Rises: “How did you go bankrupt?” Bill asked. “Two ways,” Mike said. “Gradually and then suddenly.”

While going bankrupt is clearly not what we want, the main point is that any significant accomplishment (good or bad), going bankrupt, getting wealthy, getting healthy, and building a great life, is a very complex challenge.

Just like any other worthy achievement, building wealth tends to be a long, gradual buildup followed by a sudden, dramatic tipping point – gradually, then suddenly!

Stay disciplined, my friends!

Charles Mattingly, MBA, CFP® | CEO & Lead Planner

Leading Edge Financial Planning

📧 charlie@leadingedgeplanning.com

☎️ 865-240-2292 Office

☎️ 865-328-4969 Cell/Text

Please tell us if we can help you on your journey to financial peace and prosperity! Hopefully, you found this article interesting and helpful. If you have any questions, contact us at 865-240-2292 or Charlie@leadingedgeplanning.com. Check out our Pilot Money Guys podcast where we regularly discuss these types of financial topics along with some fun airline news updates and interesting guest interviews. Even the editor and founder of Aero Crew News – Craig Pieper!

Please remember that past performance may not be indicative of future results. Different types of investments involve varying degrees of risk and there can be no assurance that the future performance of any specific investment, investment strategy, or product made reference to directly or indirectly in this video will be profitable, equal any corresponding indicated historical performance level(s), or be suitable for your portfolio. Moreover, you should not assume that any information or any corresponding discussions serves as the receipt of, or as a substitute for, personalized investment advice from Leading Edge Financial Planning personnel. The opinions expressed are those of Leading Edge Financial Planning and are subject to change at any time due to the changes in market or economic conditions.

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