The stock market on August 18, 1987
August 18, 1987, a Tuesday. The S&P 500 fell 1.45% to close at 329.25. Of 6,320 US stocks that traded, 1,226 rose and 3,019 fell.
The S&P 500-1.45%closed at 329.25
How big a move#3,269of 24,799 trading days since 1928
$100 in the index since$2,340price only, to September 24, 2026
Stocks that rose1,226of 6,320; 3,019 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Armstrong Holdings (ACK) | +5.4% |
| Lockheed Martin (LMT) | +5.2% |
| RadioShack (TAN) | +4.3% |
Biggest falls among the 500 largest companies
| Valhi, Inc. (VHI) | -6.2% |
| Illinois Tool Works (ITW) | -5.8% |
| Chemical Banking Corporation (CMB) | -5.2% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 17, 1987 · Every August 18 · August 19, 1987 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.