Underfolio

Every trading day › 1985

The stock market on August 26, 1985

August 26, 1985, a Monday. The S&P 500 rose 0.07% to close at 187.31. Of 5,711 US stocks that traded, 1,582 rose and 1,809 fell.

The S&P 500+0.07%closed at 187.31
How big a move#22,619of 24,799 trading days since 1928
$100 in the index since$4,113price only, to September 24, 2026
Stocks that rose1,582of 5,711; 1,809 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Mesa Inc (MXP.)+10.5%
Hutton (E.F.) Group (EFH)+6.0%
Northwest Airlines (NWA)+5.3%

Biggest falls among the 500 largest companies

Entergy (ETR)-10.0%
National Semiconductor (NSM)-5.9%
Pan Am Corp-5.9%

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

‹ August 23, 1985 · Every August 26 · August 27, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.