The stock market on August 18, 1980
August 18, 1980, a Monday. The S&P 500 fell 1.85% to close at 123.39. Of 4,574 US stocks that traded, 621 rose and 2,582 fell.
The S&P 500-1.85%closed at 123.39
How big a move#1,965of 24,799 trading days since 1928
$100 in the index since$6,244price only, to September 24, 2026
Stocks that rose621of 4,574; 2,582 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Fina Inc -cl A (FI) | +7.4% |
| Interfirst Corp (IFC) | +2.1% |
| DTE Energy (DTE) | +2.0% |
Biggest falls among the 500 largest companies
| Storage Technology (STK) | -7.1% |
| Globalsantafe Corp (GSF) | -6.5% |
| Cox Communications Inc -old (COX.) | -6.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 15, 1980 · Every August 18 · August 19, 1980 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.