The stock market on December 21, 1984
December 21, 1984, a Friday. The S&P 500 fell 0.52% to close at 165.51. Of 5,766 US stocks that traded, 1,366 rose and 1,833 fell.
The S&P 500-0.52%closed at 165.51
How big a move#12,081of 24,799 trading days since 1928
$100 in the index since$4,655price only, to September 24, 2026
Stocks that rose1,366of 5,766; 1,833 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Con-way (CNF) | +4.0% |
| Mobil Corporation (MOB) | +3.8% |
| Fort James (FJ) | +3.6% |
Biggest falls among the 500 largest companies
| CNA Financial Corporation (CNA) | -9.9% |
| Utah Power & Light (UTP) | -5.7% |
| Unicom (UCM) | -5.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ December 20, 1984 · Every December 21 · December 24, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.