The stock market on May 12, 1986
May 12, 1986, a Monday. The S&P 500 fell 0.11% to close at 237.58. Of 5,770 US stocks that traded, 1,610 rose and 2,145 fell.
The S&P 500-0.11%closed at 237.58
How big a move#21,461of 24,799 trading days since 1928
$100 in the index since$3,243price only, to September 24, 2026
Stocks that rose1,610of 5,770; 2,145 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for11stocks
Biggest rises among the 500 largest companies
| Apple (AAPL) | +9.0% |
| Mapco (MDA) | +5.0% |
| Union Carbide | +4.9% |
Biggest falls among the 500 largest companies
| Louisiana-Pacific (LPX) | -6.0% |
| Dover (DOV) | -5.7% |
| Viacomcbs Inc (VIAC) | -5.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ May 9, 1986 · Every May 12 · May 13, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.