The S&P 500 was 23% above its Black Monday close a year later

The S&P 500 closed 23.2% above its Black Monday close one year later.

On October 19, 1987, the index fell 20.5% to 224.84, its worst day on record.

On October 19, 1988, it closed at 276.97.

The 1987 sell-off took the S&P 500 down 33.5% from its August peak to its December bottom.

Here is how the index did one year after the worst October day of each crash.

The 1929 crash ran far deeper, with an 86.2% drop from peak to bottom.

The index didn't get back to its 1929 peak until September 1954.

The 2008 crash cut it 56.8%, and it took until March 2013 to recover.

After 1987, the S&P 500 was back at its old high by July 1989.

Of the 3 crashes, 1987 was both the shallowest and the quickest to win back its peak.

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