The stock market on September 19, 1984
September 19, 1984, a Wednesday. The S&P 500 fell 0.42% to close at 166.94. Of 5,792 US stocks that traded, 1,481 rose and 1,721 fell.
The S&P 500-0.42%closed at 166.94
How big a move#13,874of 24,799 trading days since 1928
$100 in the index since$4,615price only, to September 24, 2026
Stocks that rose1,481of 5,792; 1,721 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Avco Corp | +7.3% |
| Entergy Gulf States La LLC | +4.8% |
| Energy East (NEG) | +3.9% |
Biggest falls among the 500 largest companies
| Intel (INTC) | -7.4% |
| Burns Intl Services Corp (BOR) | -6.9% |
| National Semiconductor (NSM) | -6.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 18, 1984 · Every September 19 · September 20, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.