Underfolio

Every trading day › 1984

The stock market on December 31, 1984

December 31, 1984, a Monday. The S&P 500 rose 0.59% to close at 167.24. Of 5,761 US stocks that traded, 2,177 rose and 1,225 fell.

The S&P 500+0.59%closed at 167.24
How big a move#10,899of 24,799 trading days since 1928
$100 in the index since$4,607price only, to September 24, 2026
Stocks that rose2,177of 5,761; 1,225 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for6stocks

Biggest rises among the 500 largest companies

CNA Financial Corporation (CNA)+7.6%
Baker Hughes (BHI)+5.6%
Marion Merrell Dow Inc (MKC)+4.9%

Biggest falls among the 500 largest companies

Ocean Drilling & Exploration (ODR)-6.4%
E-systems Inc. (ESY)-5.9%
Supervalu (SVU)-5.6%

Stock moves count dividends; the index is price only. Market values after 2024 are estimates.

‹ December 28, 1984 · Every December 31 · January 2, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.