Underfolio

Every trading day › 1978

The stock market on August 11, 1978

August 11, 1978, a Friday. The S&P 500 rose 0.29% to close at 103.96. Of 4,543 US stocks that traded, 1,556 rose and 1,022 fell.

The S&P 500+0.29%closed at 103.96
How big a move#16,786of 24,799 trading days since 1928
$100 in the index since$7,411price only, to September 24, 2026
Stocks that rose1,556of 4,543; 1,022 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Mead (MEA)+18.8%
Champion Spark Plug (CHM)+11.4%
CNA Financial Corporation (CNA)+7.4%

Biggest falls among the 500 largest companies

Data General Corp (DGN.)-4.2%
Ashland (ASH)-3.4%
Energy Future Holdings (TXU)-3.4%

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

‹ August 10, 1978 · Every August 11 · August 14, 1978 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.