The stock market on September 21, 1977
September 21, 1977, a Wednesday. The S&P 500 fell 0.82% to close at 95.10. Of 4,645 US stocks that traded, 840 rose and 1,570 fell.
The S&P 500-0.82%closed at 95.10
How big a move#7,753of 24,799 trading days since 1928
$100 in the index since$8,101price only, to September 24, 2026
Stocks that rose840of 4,645; 1,570 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Cameron Iron Works (CIW) | +5.0% |
| Airco Inc (AN) | +4.5% |
| Dome Mines (DM) | +3.3% |
Biggest falls among the 500 largest companies
| CBS Corporation (CBS) | -9.3% |
| Combustion Engineering (CSP) | -6.4% |
| Owens-Illinois (OI) | -5.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 20, 1977 · Every September 21 · September 22, 1977 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.