The stock market on October 23, 1986
October 23, 1986, a Thursday. The S&P 500 rose 1.28% to close at 239.28. Of 5,991 US stocks that traded, 2,275 rose and 1,436 fell.
The S&P 500+1.28%closed at 239.28
How big a move#4,118of 24,799 trading days since 1928
$100 in the index since$3,220price only, to September 24, 2026
Stocks that rose2,275of 5,991; 1,436 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Lear Siegler Inc | +11.9% |
| Wendy's International Inc (WEN) | +8.7% |
| American Homes 4 Rent (AMH) | +8.3% |
Biggest falls among the 500 largest companies
| Newmont Gold Co (NGC) | -6.1% |
| Vulcan Materials (VMC) | -3.5% |
| Supervalu (SVU) | -3.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ October 22, 1986 · Every October 23 · October 24, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.