The stock market dropped — should I sell or hold?

What we checked before reaching this conclusion

We reviewed long-run S&P 500 and global equity return data, peer-reviewed behavioral finance research on investor timing decisions, the historical record of market recoveries following every major crash since 1929, and the documented cost of missing the market's best days. We also consulted DALBAR's annual Quantitative Analysis of Investor Behavior — arguably the most rigorous ongoing study of how real investors' returns compare to market returns — to ensure we were not simply telling people what they wanted to hear. The picture is consistent and unambiguous for long-term, diversified investors.

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  Historical recovery record reviewed Every bear market in modern U.S. equity history has eventually been fully recovered — the question has never been whether, only how long.
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  Cost of missing the best trading days quantified J.P. Morgan's annual "Guide to the Markets" data confirms that missing just the 10 best trading days in a 20-year period cuts final returns by roughly half — and those days cluster immediately around market bottoms.
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  DALBAR investor behavior data examined DALBAR's 2024 report found the average equity fund investor underperformed the S&P 500 by more than 1.5 percentage points annually over 30 years, primarily due to panic selling and mistimed re-entry.
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  Legitimate exceptions identified We specifically looked for cases where selling during a downturn was the correct decision, and found genuine ones: investors with short time horizons, dangerously over-leveraged positions, or portfolios misaligned with their actual risk tolerance.

Your situation determines the right move — here's how to choose

There is no single answer that applies to every investor in every market drop, but the evidence heavily favors one approach for the majority of people with long-term goals.

What people do during market drops that almost always backfires

These responses feel logical in the moment — they are not. Each one has a documented track record of costing investors money.

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  Selling everything and waiting for "the bottom" — Nobody reliably identifies market bottoms in real time; studies of professional fund managers show that even paid experts fail to time re-entry correctly, and ordinary investors typically re-enter after most of the recovery has already happened, buying back higher than they sold.
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  Moving everything into cash or a money market account — Cash feels safe, but once inflation and taxes are factored in, sitting in cash during a recovery is a guaranteed real-money loss; the S&P 500's average first-year recovery gain after a bear market trough is approximately 40%, which cash holders miss entirely.
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  Checking your portfolio balance every day — Frequent monitoring during volatility dramatically increases the likelihood of an emotional, reactive trade; research by Shlomo Benartzi and Richard Thaler on myopic loss aversion shows that investors who check returns more often take on less risk and achieve worse outcomes — log out, set a quarterly review date, and step away from the screen.
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  Rotating into "safer" individual stocks or sectors — Fleeing broad index funds for perceived safe havens — gold miners, utilities, consumer staples individual stocks — introduces concentrated single-stock risk at exactly the moment when you are most likely to make poor judgment calls; sector rotation requires accurate macro forecasting, which almost no one does consistently.
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  Pausing automatic contributions "until things calm down" — Stopping dollar-cost averaging during a downturn is the equivalent of refusing to buy groceries because they are on sale; every contribution you make while prices are depressed lowers your average cost basis and amplifies your eventual gains when the market recovers.