Oct 10 2008
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“ Thursday’s decline — the 11th largest in percentage terms in the Dow’s history — put the stock market either in, or nearly in, a crash. A common definition of a crash is a 20% decline in a single day or several days. The Dow’s crash in 1987 was 22.6% in one day. The 1929 crash was back-to-back declines of 12.8% and 11.7%.
