Underfolio

Every trading day › 1979

The stock market on August 17, 1979

August 17, 1979, a Friday. The S&P 500 rose 0.19% to close at 108.30. Of 4,511 US stocks that traded, 1,260 rose and 1,100 fell.

The S&P 500+0.19%closed at 108.30
How big a move#19,206of 24,799 trading days since 1928
$100 in the index since$7,114price only, to September 24, 2026
Stocks that rose1,260of 4,511; 1,100 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Home Oil Ltd -cl A (HG.A)+22.6%
Southland Royalty Co (SRO)+8.1%
Unocal Corporation (UCL)+7.5%

Biggest falls among the 500 largest companies

Warner Communications (WCI)-3.6%
Air Products & Chem. (APD)-3.4%
Cbi Industries Inc (CBI)-2.9%

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

‹ August 16, 1979 · Every August 17 · August 20, 1979 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.