The stock market on September 20, 1984
September 20, 1984, a Thursday. The S&P 500 rose 0.32% to close at 167.47. Of 5,790 US stocks that traded, 1,562 rose and 1,569 fell.
The S&P 500+0.32%closed at 167.47
How big a move#16,152of 24,799 trading days since 1928
$100 in the index since$4,600price only, to September 24, 2026
Stocks that rose1,562of 5,790; 1,569 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| J.P. Morgan Chase & Co. (CMB) | +5.7% |
| Ltv Corp (LTVCQ) | +5.5% |
| Ocean Drilling & Exploration (ODR) | +4.5% |
Biggest falls among the 500 largest companies
| ConocoPhillips (P) | -6.3% |
| Beatrice Cos Inc | -5.3% |
| FedEx (FDX) | -4.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 19, 1984 · Every September 20 · September 21, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.