The stock market on September 23, 1986
September 23, 1986, a Tuesday. The S&P 500 rose 0.31% to close at 235.67. Of 5,957 US stocks that traded, 2,148 rose and 1,655 fell.
The S&P 500+0.31%closed at 235.67
How big a move#16,207of 24,799 trading days since 1928
$100 in the index since$3,269price only, to September 24, 2026
Stocks that rose2,148of 5,957; 1,655 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Trans World Airlines | +9.2% |
| Burns Intl Services Corp (BOR) | +8.3% |
| Quantum Chemical (CUE) | +8.3% |
Biggest falls among the 500 largest companies
| Marathon Oil (MRO) | -7.5% |
| Aflac (AFL) | -4.7% |
| Campbell Red Lake Mines (CRK) | -4.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 22, 1986 · Every September 23 · September 24, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.