The stock market on August 20, 1986
August 20, 1986, a Wednesday. The S&P 500 rose 1.32% to close at 249.77. Of 5,921 US stocks that traded, 2,081 rose and 1,642 fell.
The S&P 500+1.32%closed at 249.77
How big a move#3,902of 24,799 trading days since 1928
$100 in the index since$3,084price only, to September 24, 2026
Stocks that rose2,081of 5,921; 1,642 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Newmont Gold Co (NGC) | +12.9% |
| Marathon Oil (MRO) | +12.2% |
| Black & Decker (BDK) | +10.9% |
Biggest falls among the 500 largest companies
| Reebok International (RBK) | -5.8% |
| Deere (DE) | -4.5% |
| Ames Dept Stores Inc (AMESQ) | -3.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 19, 1986 · Every August 20 · August 21, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.