Underfolio

Every trading day › 1979

The stock market on September 28, 1979

September 28, 1979, a Friday. The S&P 500 fell 0.81% to close at 109.32. Of 4,505 US stocks that traded, 929 rose and 1,501 fell.

The S&P 500-0.81%closed at 109.32
How big a move#7,943of 24,799 trading days since 1928
$100 in the index since$7,047price only, to September 24, 2026
Stocks that rose929of 4,505; 1,501 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Beech Aircraft Corp (BCX)+7.8%
St Joe Minerals (SJO)+4.0%

Biggest falls among the 500 largest companies

CBS Corporation (CBS)-5.9%
Phelps Dodge (PD)-5.5%
Champion Spark Plug (CHM)-5.4%

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

‹ September 27, 1979 · Every September 28 · October 1, 1979 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.