Underfolio

Every trading day › 1979

The stock market on August 30, 1979

August 30, 1979, a Thursday. The S&P 500 rose 0.00% to close at 109.02. Of 4,499 US stocks that traded, 1,279 rose and 1,213 fell.

The S&P 5000.00%closed at 109.02
How big a move#24,787of 24,799 trading days since 1928
$100 in the index since$7,067price only, to September 24, 2026
Stocks that rose1,279of 4,499; 1,213 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Santa Fe International (SAF)+5.5%
Homestake Mining (HM)+4.9%
Diamond International (DN)+4.4%

Biggest falls among the 500 largest companies

American Cyanamid (ACY)-6.7%
Gulf United Corp (GHC)-6.6%
City Investing Co (CNV)-6.4%

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

‹ August 29, 1979 · Every August 30 · August 31, 1979 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.