The stock market on December 12, 1986
December 12, 1986, a Friday. The S&P 500 fell 0.33% to close at 247.35. Of 6,038 US stocks that traded, 1,361 rose and 2,281 fell.
The S&P 500-0.33%closed at 247.35
How big a move#15,830of 24,799 trading days since 1928
$100 in the index since$3,115price only, to September 24, 2026
Stocks that rose1,361of 6,038; 2,281 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Unocal Corporation (UCL) | +4.5% |
| Amoco Corp (AN) | +3.9% |
Biggest falls among the 500 largest companies
| MCI Communications (MCIC.) | -5.0% |
| Reebok International (RBK) | -4.3% |
| Humana (HUM) | -4.2% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ December 11, 1986 · Every December 12 · December 15, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.