The stock market on August 11, 1986
August 11, 1986, a Monday. The S&P 500 rose 1.60% to close at 240.68. Of 5,906 US stocks that traded, 2,438 rose and 1,350 fell.
The S&P 500+1.60%closed at 240.68
How big a move#2,677of 24,799 trading days since 1928
$100 in the index since$3,201price only, to September 24, 2026
Stocks that rose2,438of 5,906; 1,350 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Tandem Computers Inc (TDM.) | +10.3% |
| Hammermill Paper Co (HML) | +8.5% |
| Gap, Inc. (The) (GPS) | +8.4% |
Biggest falls among the 500 largest companies
| BankAmerica Corp. | -4.7% |
| Unocal Exploration Corp (UXC) | -4.2% |
| UnumProvident (PVT..) | -2.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 8, 1986 · Every August 11 · August 12, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.