What was the name of the worldwide stock-market plunge on 9 March 2020?

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Black Monday (2020) was the name of the worldwide stock-market plunge on 9 March 2020.

Markets fell sharply as the spread of COVID-19 increased fears of a global recession. The decline was intensified by the collapse of cooperation between major oil producers, which triggered a dramatic fall in oil prices and a broader flight from risky assets.

The S&P 500 fell 7.6 percent on March 9, 2020, triggering a modern circuit breaker designed to pause trading after a large decline. Markets experienced another major one-day fall on March 12, known as Black Thursday.

The two names can therefore be confused. Black Monday refers to March 9, while Black Thursday refers to March 12; both were part of the broader 2020 stock-market crash.

Source: Wikipedia · fact-checked Oct. 2026

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