Underfolio

Every trading day › 1979

The stock market on August 31, 1979

August 31, 1979, a Friday. The S&P 500 rose 0.28% to close at 109.32. Of 4,502 US stocks that traded, 1,522 rose and 904 fell.

The S&P 500+0.28%closed at 109.32
How big a move#17,110of 24,799 trading days since 1928
$100 in the index since$7,047price only, to September 24, 2026
Stocks that rose1,522of 4,502; 904 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Reliance Electric Co -old (REE)+7.6%
Transco Energy (E)+7.4%
Freeport-McMoran (FTX)+5.8%

Biggest falls among the 500 largest companies

Willamette Industries (WLL)-5.4%
Firestone (FIR)-3.3%
Centel Corp (CNT)-3.1%

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

‹ August 30, 1979 · Every August 31 · September 4, 1979 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.