The stock market on September 12, 1986
September 12, 1986, a Friday. The S&P 500 fell 1.92% to close at 230.67. Of 5,951 US stocks that traded, 1,028 rose and 3,154 fell.
The S&P 500-1.92%closed at 230.67
How big a move#1,836of 24,799 trading days since 1928
$100 in the index since$3,340price only, to September 24, 2026
Stocks that rose1,028of 5,951; 3,154 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Lucky Stores (LKS) | +8.2% |
| Ceridian Corp (CEN) | +6.9% |
| Homestake Mining (HM) | +6.6% |
Biggest falls among the 500 largest companies
| Genentech Inc (DNA) | -14.2% |
| Reebok International (RBK) | -9.9% |
| Citizens Commun -ser B Old (CZN) | -8.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 11, 1986 · Every September 12 · September 15, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.