S&P 500 Posts Three 9% Swings for First Time Since 1929

Photographer: John Taggart/Bloomberg

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Historical precedents of the S&P 500’s move in the past three days are hard to find, but one instance almost a century ago is coming close.

The S&P 500 tumbled 12% on Monday to 2,386 in its third day of swings of more than 9%. The last time the index moved this much for three consecutive sessions was during the Great Depression: the benchmark tumbled 13% on Monday, Oct. 28, 1929, only to fall another 10% the following day and then gain 13% on Wednesday.