The stock market on September 19, 1980
September 19, 1980, a Friday. The S&P 500 rose 0.66% to close at 129.25. Of 4,589 US stocks that traded, 1,966 rose and 1,058 fell.
The S&P 500+0.66%closed at 129.25
How big a move#9,801of 24,799 trading days since 1928
$100 in the index since$5,961price only, to September 24, 2026
Stocks that rose1,966of 4,589; 1,058 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Wang Labs Inc (WANG) | +10.3% |
| Koppers (KOP) | +8.6% |
| Natomas Co (NOM) | +7.1% |
Biggest falls among the 500 largest companies
| Marathon Oil Corporation (MRO) | -4.6% |
| Husky Oil Ltd (HYO) | -4.3% |
| Dome Petroleum Ltd (DMP) | -3.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 18, 1980 · Every September 19 · September 22, 1980 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.