The 10 Biggest Single-Day Declines for the Dow, Nasdaq, and S&P 500
"Through this past Wednesday, Oct. 24, following a 608-point slide for the iconic Dow Jones Industrial Average (DJINDICES:^DJI), an 85-point drop for the broad-based S&P 500 (SNPINDEX:^GSPC), and a 329-point tumble for the tech-heavy Nasdaq Composite (NASDAQINDEX:^IXIC), the Dow, S&P 500, and Nasdaq were off by 7.1%, 8.8%, and 11.7%, respectively, since October began. The move lower places the Nasdaq firmly in correction territory, with the S&P 500 dangling just a few points away from hitting its 37th correction of at least 10% since 1950."