The stock market on April 12, 1984
April 12, 1984, a Thursday. The S&P 500 rose 1.76% to close at 157.73. Of 5,730 US stocks that traded, 1,856 rose and 1,349 fell.
The S&P 500+1.76%closed at 157.73
How big a move#2,194of 24,799 trading days since 1928
$100 in the index since$4,884price only, to September 24, 2026
Stocks that rose1,856of 5,730; 1,349 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for4stocks
Biggest rises among the 500 largest companies
| Fannie Mae (FNMA) | +11.5% |
| Lockheed Martin (LMT) | +9.1% |
| Tandem Computers Inc (TDM.) | +8.8% |
Biggest falls among the 500 largest companies
| Rolm (RM) | -5.7% |
| Allegheny Technologies (ATI) | -4.4% |
| Allied Stores | -2.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ April 11, 1984 · Every April 12 · April 13, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.