Underfolio

Every trading day › 1981

The stock market on October 30, 1981

October 30, 1981, a Friday. The S&P 500 rose 2.38% to close at 121.89. Of 5,015 US stocks that traded, 2,222 rose and 776 fell.

The S&P 500+2.38%closed at 121.89
How big a move#1,156of 24,799 trading days since 1928
$100 in the index since$6,321price only, to September 24, 2026
Stocks that rose2,222of 5,015; 776 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

Sedco (SED)+16.5%
Mesa Inc (MXP.)+11.3%
Cities Service Co+10.8%

Biggest falls among the 500 largest companies

Tenneco (TEN)-4.2%
Lubrizol (LZ)-3.9%
Sonat Inc. (SNT)-3.6%

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

‹ October 29, 1981 · Every October 30 · November 2, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.