Market Panic

What to Do When the Stock Market Crashes

Watching your portfolio plummet — looking for guidance during a market crash

Quick answer (use as a checklist)

What to Do When the Stock Market Crashes is a common decision pressure point for investors: Watching your portfolio plummet — looking for guidance during a market crash This page gives you a reusable master-style response—a quick framing, a practical action plan, and signals that confirm or invalidate your thesis within your time horizon. Treat it as a process guide, not a buy/sell signal: you still need valuation, balance-sheet risk, and your own constraints. Use matched principles and related scenarios to deepen what you’re unsure about, then write down your next review date before you act.

5-minute decision checklist

  • State your decision and time horizon (buy/hold/sell, sizing, or review).
  • Write 2–3 disconfirming signals that would change your mind.
  • Separate facts from narratives: what evidence is missing?
  • Define a guardrail: position size, downside boundary, and a review date.
  • If uncertain, turn the next step into research, not action.

Common misuses to avoid

  • Headline trading: reacting before you define evidence and time horizon.
  • Context collapse: applying a rule from one regime/industry to a different one.
  • Overconfidence: sizing the position before you can write invalidation triggers.

⚠️ Educational only—this is not investment advice. Decide based on your own risk, time horizon, and constraints.

What the Masters Would Say

We get it -- watching your portfolio plummet is terrifying, and every instinct screams to sell everything before it gets worse. That feeling is completely normal. But here is what the greatest investors in history want you to remember: real wealth is created during market crashes, not destroyed.

Warren Buffett's most famous principle applies directly: "Be greedy when others are fearful." This does not mean recklessly buying into a falling market. It means refusing to panic-sell quality businesses just because their prices have temporarily dropped. The businesses behind your stocks did not lose their value overnight -- they are still selling products, generating revenue, and serving customers.

Howard Marks reminds us that the biggest investment mistakes are psychological, not analytical. When markets crash, your brain enters fight-or-flight mode, and that survival instinct -- useful for escaping predators -- is catastrophic for your portfolio. The investors who build lasting wealth are those who can override this instinct with rational analysis.

John Templeton built one of the greatest fortunes in investing history by systematically buying during what he called "the point of maximum pessimism." He understood that the best bargains appear precisely when most people are too afraid to act.

Benjamin Graham, the father of value investing, taught that the market is like a voting machine in the short run but a weighing machine in the long run. Crashes are moments when the voting machine is driven by fear rather than reason. The weighing machine always catches up eventually. Every crash in history -- the Great Depression, Black Monday 1987, the Dot-com Bust, the 2008 Financial Crisis, and the COVID crash of 2020 -- was followed by a full recovery and new all-time highs.

Here is your concrete action plan:

Your Action Plan

1. Stop checking your portfolio every hour -- constant monitoring amplifies panic without adding information.
2. Review whether your original investment thesis for each holding has actually changed.
3. If you have cash reserves, evaluate whether current prices represent genuine buying opportunities.
4. Write down the three worst things that could happen and assess their actual probability.
5. Remember that every major market crash in history -- every single one -- has eventually been followed by a complete recovery and new highs.

The Bottom Line

Stay the course and trust your process, because the market rewards patience far more than panic.

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Last Updated: February 12, 2026
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