The stock market on May 9, 1984
May 9, 1984, a Wednesday. The S&P 500 fell 0.26% to close at 160.11. Of 5,741 US stocks that traded, 1,409 rose and 1,834 fell.
The S&P 500-0.26%closed at 160.11
How big a move#17,582of 24,799 trading days since 1928
$100 in the index since$4,812price only, to September 24, 2026
Stocks that rose1,409of 5,741; 1,834 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Allegheny Technologies (ATI) | +21.0% |
| Firestone (FIR) | +9.1% |
| Jewel Cos Inc (JWL.) | +9.1% |
Biggest falls among the 500 largest companies
| CMS Energy (CMS) | -6.3% |
| U S Shoe Corp (USR) | -5.7% |
| Cigna (CI) | -5.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ May 8, 1984 · Every May 9 · May 10, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.