The stock market on August 4, 1986
August 4, 1986, a Monday. The S&P 500 rose 0.46% to close at 235.99. Of 5,906 US stocks that traded, 1,240 rose and 2,612 fell.
The S&P 500+0.46%closed at 235.99
How big a move#13,190of 24,799 trading days since 1928
$100 in the index since$3,265price only, to September 24, 2026
Stocks that rose1,240of 5,906; 2,612 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Unocal Corporation (UCL) | +10.1% |
| Kerr-McGee (KMG) | +8.5% |
| Occidental Petroleum (OXY) | +7.6% |
Biggest falls among the 500 largest companies
| MCI Communications (MCIC.) | -5.5% |
| Dreyfus Corp (DRY) | -5.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 1, 1986 · Every August 4 · August 5, 1986 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.