Underfolio

Every trading day › 1980

The stock market on October 31, 1980

October 31, 1980, a Friday. The S&P 500 rose 0.93% to close at 127.47. Of 4,640 US stocks that traded, 1,630 rose and 1,343 fell.

The S&P 500+0.93%closed at 127.47
How big a move#6,639of 24,799 trading days since 1928
$100 in the index since$6,044price only, to September 24, 2026
Stocks that rose1,630of 4,640; 1,343 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Husky Oil Ltd (HYO)+10.3%
Southland Royalty Co (SRO)+6.5%
Owens Corning (OWC)+6.4%

Biggest falls among the 500 largest companies

Paccar (PCAR)-4.4%
Dome Mines (DM)-4.4%
Varco International-Old (VRC.Z)-4.4%

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

‹ October 30, 1980 · Every October 31 · November 3, 1980 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.