A market crash makes everyone want to sell. Your portfolio drops, the headlines turn grim, and sitting in cash starts to look very tempting. The thing is, history keeps telling us a different story.
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The UK data on past recoveries holds a few surprises worth knowing before the next downturn arrives. Follow along as we look at four UK crashes, what the recoveries actually looked like, and what they suggest about your next move.
What Four UK Crashes Tell Us About Recovery
Every major crash in the past century has been followed by a recovery, but no two have looked the same. On Black Monday in October 1987, the FTSE 100 fell around 23% over two trading days, with a 10.8% drop on the Monday and a further 12.2% the next day. The index briefly touched its pre-crash level in early 1990, but a full, sustained recovery didn’t arrive until around March 1991, nearly four years later.
The dot-com bust between 2000 and 2003 was the slow grind. The market drifted lower for three years as overvalued tech firms unwound, and the FTSE 100 didn’t reclaim its 1999 peak until roughly 2006. Compare that to the 2007-09 financial crisis, where the FTSE 100 lost roughly half its value before bottoming in March 2009 and climbing steadily after.
Then came COVID in 2020, the fastest crash on record. The FTSE 100 dropped around a third in a matter of weeks, with a 10.87% fall on 12 March alone, its worst day since 1987. The rebound was quick in headline terms, but UK investors needed patience. Global indices like the S&P 500 reclaimed their highs within months, while the FTSE 100 didn’t fully recover until late 2021. The lesson across all four crashes is simple. Recoveries are certain in hindsight, but the timing and shape are impossible to call in the moment.
Why the Best Days Cluster Around the Worst
Here’s the part that catches people out. Some of the strongest single-day gains in market history have landed within days or weeks of the worst crashes. The big up days and the big down days tend to huddle together during volatile spells.
J.P. Morgan’s popular Guide to the Markets analysis shows that missing just the ten best days over a 20-year period can cut total returns roughly in half, a finding that’s been consistent across multiple market cycles.
If you sell after a sharp fall, you protect yourself from further drops, but you also put yourself at risk of missing the rebound. Miss a handful of the market’s best days over a couple of decades and your long-term return takes a serious hit. This is why staying invested matters more than trying to time your exit and re-entry.
This is where the value of professional investment management shows up. A good manager keeps clients calm and invested through the worst of it, instead of letting panic drive decisions that lock in losses.
Lump Sum or Drip Feed: What the Evidence Says
If you do have cash on the sidelines during a crash, the obvious question is whether to invest it all at once or gradually. The evidence leans slightly towards investing the lot in one go, because markets rise more often than they fall, so money put to work sooner tends to spend more time growing.
That said, the maths isn’t the whole picture. Pound-cost averaging, where you invest in regular chunks, won’t usually beat a lump sum on paper, but it does something the spreadsheet ignores. It softens the regret if the market drops right after you invest. Things worth weighing up:
- Lump sum tends to win on average returns over the long run
- Pound-cost averaging reduces the sting of bad timing and is easier to stomach
- Your own temperament matters as much as the numbers
If putting everything in at once would keep you awake at night, drip-feeding is a sensible trade-off. Slightly lower expected returns in exchange for sleeping soundly is a fair deal for plenty of people.
The Hardest Part Is Doing Nothing
Crashes are part of investing, not a sign that something has broken. The pattern across Black Monday, the dot-com bust, the financial crisis and COVID is consistent. Markets fall, they frighten people into selling, and then they recover for those who held on.
The hardest part is doing nothing when every headline is telling you to act. If you can resist that pull, or lean on someone who helps you resist it, history has been kind to investors who stay the course.
The value of your investments and the income from them may go down as well as up, and you could get back less than you invested. Past performance should not be seen as an indication of future performance.