The stock market on September 21, 1978
September 21, 1978, a Thursday. The S&P 500 rose 0.17% to close at 101.90. Of 4,545 US stocks that traded, 964 rose and 1,786 fell.
The S&P 500+0.17%closed at 101.90
How big a move#19,973of 24,799 trading days since 1928
$100 in the index since$7,560price only, to September 24, 2026
Stocks that rose964of 4,545; 1,786 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Mgm Grand Hotels Inc (GRH) | +12.2% |
| Griffin GAMING&ENTMT (GGE) | +10.4% |
| Houston Oil & Minerals (HOI) | +9.6% |
Biggest falls among the 500 largest companies
| Con-way (CNF) | -4.2% |
| Colt Industries (COT) | -4.1% |
| Dover (DOV) | -3.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 20, 1978 · Every September 21 · September 22, 1978 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.