Crashes as case studies: 1987, 2000, 2008, 2020, 2022

You can describe five major US market declines, their causes and how long they took to recover, and draw lessons for risk management.

Five crashes, five causes

Every few years, markets fall much further and faster than most people think possible. Afterwards, the cause always looks obvious. Beforehand, it rarely did.

Five US declines since 1987 make useful case studies. Their causes were completely different: a panic, a bubble, a banking crisis, a virus, an inflation shock. What they share teaches more about risk than any single indicator.

1987, 2000, 2008, 2020, 2022

A bear market is commonly defined as a fall of at least 20% from a previous high. Measured from peak to low:

1987: Black Monday. On 19 October 1987, the Dow Jones Industrial Average fell 22.6% in a single session, still the largest one-day percentage decline. It had risen 44% in seven months before. Computer-driven selling and "portfolio insurance" strategies amplified the fall. Afterwards, exchanges introduced the circuit breaker, trading pauses after large declines.
2000–2002: the dot-com bust. The Nasdaq Composite closed at 5,048.62 on 10 March 2000 and at 1,114.11 on 9 October 2002, a loss of 77.9%. Many internet companies had been valued on hopes rather than profits.
2007–2009: the financial crisis. Falling house prices and losses on mortgage securities spread through the banking system. The S&P 500 fell about 57% from October 2007 to March 2009.
2020: the pandemic. From 19 February to 23 March 2020, the S&P 500 fell about 34% in 33 days, one of the fastest declines on record.
2022: the inflation shock. Rising inflation and interest rates pushed the S&P 500 down 25.4% from 3 January to 12 October 2022, while bonds fell too.

Fast, slow, rates

The declines differed in speed and recovery:

Fast crashes can recover quickly. After March 2020, the S&P 500 reached a new record in August 2020.
Slow crashes tied to deep problems took years. The S&P 500 regained its October 2007 high only in March 2013. The Nasdaq needed until April 2015 to pass its March 2000 close.
Rate-driven declines hit bonds and shares together, so diversification helped less.

Three lessons stand out. Declines can be deeper than any recent experience suggests. Leverage turns a temporary fall into a permanent loss, because a margin call can force a sale at the low. And an investor who needs the money soon, or holds positions too large to sit through a 30% to 50% fall, cannot wait for the recovery.

Common mistakes

Believing the next crash will look like the last. Each had a different cause.
Assuming recoveries are always quick. Some took more than five years, the Nasdaq fifteen.
Using leverage through a crisis. It can force selling at the worst moment.
Trying to predict the exact top. Better to size positions so that a crash is survivable.

The takeaway

Five crashes, five causes: a one-day panic, a tech bubble, a banking crisis, a pandemic, an inflation shock. Each fell further and faster than most expected.

Check yourself

Quick quiz

4 questions. Instant feedback, nothing is saved.

1Tap the deepest decline.

Tap the chart.

The Nasdaq Composite lost 77.9% from its March 2000 peak to its October 2002 low, and needed until April 2015 to regain it.
2What made the 1987 crash unusual?

Black Monday, 19 October 1987, led to new safeguards such as circuit breakers.
3How long did it take the S&P 500 to regain its October 2007 high?

Deep declines can take years to recover, even when the index eventually reaches new highs.
4What is the main lesson for risk management?

None of these crashes looked inevitable beforehand. Surviving them depends on position size, leverage and time horizon.

of 4 correct.

Sources

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