Underfolio

Every trading day › 1981

The stock market on October 23, 1981

October 23, 1981, a Friday. The S&P 500 fell 0.87% to close at 118.60. Of 5,001 US stocks that traded, 1,043 rose and 1,906 fell.

The S&P 500-0.87%closed at 118.60
How big a move#7,236of 24,799 trading days since 1928
$100 in the index since$6,496price only, to September 24, 2026
Stocks that rose1,043of 5,001; 1,906 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Tom Brown Inc (TMBR)+5.9%
Energy Reserves Group (ERGS)+5.1%
Hudson's Bay Oil & Gas Co (HBO)+4.5%

Biggest falls among the 500 largest companies

Phoenix Resource Cos (PHN)-8.0%
Ocean Drilling & Exploration (ODR)-8.0%
Levi Strauss (LEVI)-7.2%

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

‹ October 22, 1981 · Every October 23 · October 26, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.