The stock market on September 11, 1986
September 11, 1986, a Thursday. The S&P 500 fell 4.81% to close at 235.18. Of 5,947 US stocks that traded, 467 rose and 4,005 fell.
The S&P 500-4.81%closed at 235.18
How big a move#187of 24,799 trading days since 1928
$100 in the index since$3,276price only, to September 24, 2026
Stocks that rose467of 5,947; 4,005 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Hutton (E.F.) Group (EFH) | +10.1% |
| North American Philips | +4.7% |
| USLIFE Corporation (USH) | +4.4% |
Biggest falls among the 500 largest companies
| Home Shopping Network | -16.5% |
| Masco (MAS) | -11.9% |
| Brunswick (BC) | -10.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 10, 1986 · Every September 11 · September 12, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.