The stock market on August 21, 1980
August 21, 1980, a Thursday. The S&P 500 rose 1.37% to close at 125.46. Of 4,575 US stocks that traded, 2,262 rose and 676 fell.
The S&P 500+1.37%closed at 125.46
How big a move#3,694of 24,799 trading days since 1928
$100 in the index since$6,141price only, to September 24, 2026
Stocks that rose2,262of 4,575; 676 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Cities Service Co | +11.1% |
| City Investing Co (CNV) | +11.1% |
| Koppers (KOP) | +9.4% |
Biggest falls among the 500 largest companies
| Aquitaine Co Canada Ltd (AQC) | -4.4% |
| Wheelabrator Frye (WFI) | -4.1% |
| Asarco Inc (AR) | -3.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 20, 1980 · Every August 21 · August 22, 1980 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.