The stock market on October 30, 1984
October 30, 1984, a Tuesday. The S&P 500 rose 1.25% to close at 166.84. Of 5,756 US stocks that traded, 1,857 rose and 1,289 fell.
The S&P 500+1.25%closed at 166.84
How big a move#4,270of 24,799 trading days since 1928
$100 in the index since$4,618price only, to September 24, 2026
Stocks that rose1,857of 5,756; 1,289 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Alexander/Baldwn (ALEX) | +9.7% |
| KeySpan (KSE) | +5.8% |
| Alexander & Alexander (AAL) | +5.5% |
Biggest falls among the 500 largest companies
| Winn-Dixie Stores (WIN) | -2.7% |
| McDonnell Douglas (MD) | -2.6% |
| Parker-Hannifin (PH) | -2.3% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ October 29, 1984 · Every October 30 · October 31, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.