There's a statistic I keep pinned to the wall above my desk. It's not from a finance textbook or a fund manager's quarterly letter. It's from a study by J.P. Morgan that looked at what happened to investors who stayed invested through every market crash versus those who tried to time their way out. The finding: over a 20-year period, the average investor who stayed fully invested earned roughly double the return of the average investor who tried to avoid the downturns. Not a little more. Double. The crashes didn't destroy their wealth. Their reaction to the crashes did.
I've lived through enough market crashes now to recognise the pattern. 1987 — Black Monday, a 20% single-day drop that came out of nowhere. 2000 — the dot-com bust, a slow-motion collapse that wiped out trillions in tech stocks. 2008 — the global financial crisis, the one that genuinely felt like the end of capitalism. 2020 — the COVID crash, a 34% drop in 33 days, the fastest bear market in history. 2022 — a grinding, relentless decline driven by inflation and rising rates. Five crashes in 35 years of investing. Each felt uniquely terrifying at the time. Each was, in hindsight, a buying opportunity. And I got most of them wrong.
Let me walk through each one — not to scare you, but to vaccinate you. Because understanding what actually happened during past crashes is the best defence against panicking during the next one. The next crash is coming. It always is. It's not a prediction — it's a certainty. The question isn't whether markets will fall 20%, 30%, or 40%. The question is what you'll do when they do.
Black Monday, 19 October 1987. I was in my late 20s, just starting out, and the stock market was not something I paid attention to. The Dow Jones Industrial Average fell 22.6% in a single day — still the largest one-day percentage drop in history. In London, the FTSE 100 fell 12.2% that day, and over the following weeks it was down more than 30%. Nobody saw it coming. The cause, depending on who you ask, was portfolio insurance, programme trading, overvaluation, or some combination. The lesson: crashes don't always have a single obvious cause, and they don't announce themselves. The recovery, by the way, was swift. By September 1989 the market had recovered all its losses. Investors who sold during the crash and waited for 'clarity' missed the recovery entirely. Investors who did nothing — who may not have even known what their pension was invested in — came out fine.
The dot-com crash, 2000-2002. I was in my early 40s, and this one I was paying attention to — in the worst way. I'd bought tech stocks during the mania because everyone else was buying them and they were going up. When they started falling, I told myself it was a 'buying opportunity'. I bought more on the way down, then watched them fall further. The Nasdaq Composite peaked in March 2000 at 5,048. By October 2002 it had fallen to 1,114 — a 78% decline. Trillions of dollars of paper wealth evaporated. Companies that had been worth billions went to zero. I lost money I couldn't afford to lose on stocks I didn't understand. The lesson: not everything that falls is a bargain. Buying what's crashing because it's 'cheaper than it was' is not a strategy — it's anchoring bias, and I was guilty of it. The investors who did well in the dot-com bust were the ones who owned broad index funds, not the ones trying to pick winners in a market that turned out to be full of losers.
The global financial crisis, 2008-2009. This was the big one. I was in my late 40s, the mortgage was paid, the business was doing okay, and my portfolio was modest but growing. Then Lehman Brothers collapsed, the credit markets seized up, and the entire global financial system seemed to be unravelling in real time on CNBC. The S&P 500 fell 57% from its 2007 peak to its March 2009 low. In the UK, the FTSE 100 dropped from over 6,700 to below 3,500. Banks were being nationalised. Governments were printing money at an unprecedented scale. Every headline, every expert, every conversation at the pub said the same thing: this time is different, the system is broken, get out while you can.
And I did. I sold some of my holdings — not everything, but enough. I told myself I was being prudent, protecting what I had left, waiting for things to 'stabilise'. What I was actually doing was locking in losses and ensuring I would miss the recovery when it came. The recovery, when it began in March 2009, was the start of the longest bull market in history — an 11-year run that would have multiplied the value of every pound I'd sold. But I wasn't invested for it. I was on the sidelines, waiting to 'feel safe', and by the time I felt safe the market had already recovered most of its losses. That mistake — selling near the bottom of 2008 — is the single most expensive financial decision I've ever made. Not a bad stock pick. Not a high fee. Selling.
The COVID crash, February-March 2020. By now I was 60, and I'd finally learned something. The S&P 500 fell 34% in 33 days — the fastest bear market in history. Markets hit circuit breakers. The world locked down. But this time I didn't sell. I didn't check my portfolio. The auto-invest kept firing — £500 into the S&P 500 in February, £500 in March at the absolute bottom, £500 in April on the way up. I didn't time it. I didn't try to. The system did what it was designed to do: buy consistently regardless of conditions. By August 2020, the market had recovered all its losses. By the end of 2020, it was at an all-time high. The money I'd auto-invested in March — when every instinct screamed to stop — turned out to be the best-timed investment of my life, and I didn't time it at all.
The 2022 bear market. Inflation spiked, the Fed and Bank of England raised rates aggressively, and both bonds and stocks fell together in a way they rarely do. The S&P 500 fell 25%, the Nasdaq fell 33%. It was a slow, grinding decline — not a panic but a persistent drain. Every rally failed. Every dip was bought and then sold again. The S&P 500 had its worst year since 2008. UK gilts had a near-death experience in September. This time, I did nothing. Just kept buying — same amount, same ETFs, same day each month. By summer 2023 the market had bottomed, and by early 2024 it was back at all-time highs. All the 'lost' money from 2022 had been recovered, and then some. The people who sold in October 2022 — when things looked genuinely frightening — locked in their losses. The people who kept buying booked the recovery.
What's the thread running through all five crashes? Every single one felt uniquely terrifying in the moment. Every single one was accompanied by experts explaining why 'this time is different' and why the old rules no longer applied. Every single one produced a wave of selling by terrified investors who were certain they were being prudent. And every single one was, in hindsight, a terrible time to sell and an excellent time to buy — or at least to keep buying if you had the stomach and the system for it.
The data backs this up relentlessly. According to analysis by Fidelity, if you had invested in the S&P 500 at the start of 1980 and stayed fully invested through every crash, recession, and bear market, your money would have grown roughly 120-fold by 2026. If you had missed just the 10 best days — ten days out of 16,500+ trading days — your returns would have been roughly halved. Ten days. And here's the kicker: 7 of the 10 best days in market history occurred within two weeks of the 10 worst days. The people who sold on the worst days missed the best days that followed almost immediately. You can't avoid the pain without also avoiding the recovery. They're packaged together.
So what do I actually do now, having been wrong in almost every crash and finally learned something? Simple. I have a written plan. It says: stay invested through all market conditions, keep buying on schedule regardless of what the market is doing, rebalance annually if allocations drift more than 5%, and do not — under any circumstances — sell because the market is falling. The plan was written in calm conditions, and it exists precisely for the moments when conditions are not calm — to be the rational voice when my emotions are screaming at me to do something.
I don't know when the next crash will come. Nobody does. But I know with certainty that it will come — probably when nobody expects it, probably for reasons nobody predicted. And when it does, I won't be making any decisions. The system will keep buying, same as always. The plan will keep me in my seat. And history suggests that, a few years later, the crash will look like a buying opportunity in the rearview mirror — just like every crash before it.
The investors who do nothing during crashes almost always win. Not because they're smarter. Not because they timed anything. But because they didn't let fear make decisions their calm self would regret. That's not just a lesson from history. It's the lesson from history. The only one that matters.
For educational purposes only. Nothing here is financial advice. All investing carries risk — past performance does not guarantee future results, and markets can stay down for years. The crashes described are historical events — future crashes may be different in magnitude, duration, and recovery pattern. What I do with my own money is not a recommendation. Always do your own research.