Howard Silverblatt, Senior Index Analyst, S&P Dow Jones Indices, writes in an email:
The index closed at 1,970.89, off 3.19%, the worst day since the November 9, 2011 decline of 3.67% (to close at 1,229.10)
The 64.85 point decline is the worst since the 79.92 point drop (6.66%) on August 8, 2011 (closing at 1,119.46)
491 issues were down and 11 were up
The week was off 5.77%, the worst week since the 6.54% decline in September 2011
487 issues were down and 15 were up
The index is 7.51% off its May 21, 2015 closing high (2,130.72); the last correction ended in October 2011
71 issues are off at least 20% from the May 21, 2015 S&P 500 closing high, 197 are off at least 10%, with only 1 up 20% (Chubb), and 22 up at least 10%; 364 down, 135 up from 5/21/156 close
Photo: SteFou