The stock market on August 20, 1980
August 20, 1980, a Wednesday. The S&P 500 rose 0.95% to close at 123.77. Of 4,572 US stocks that traded, 1,760 rose and 1,073 fell.
The S&P 500+0.95%closed at 123.77
How big a move#6,435of 24,799 trading days since 1928
$100 in the index since$6,225price only, to September 24, 2026
Stocks that rose1,760of 4,572; 1,073 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| U S West Communications Inc | +17.4% |
| Pacific Bell | +16.7% |
| Pacific Nowest Bell Telephon | +16.4% |
Biggest falls among the 500 largest companies
| Fina Inc -cl A (FI) | -6.4% |
| Txu Gas Co | -5.2% |
| Kroger (KR) | -4.5% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 19, 1980 · Every August 20 · August 21, 1980 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.