Underfolio

Every trading day › 1985

The stock market on August 9, 1985

August 9, 1985, a Friday. The S&P 500 fell 0.33% to close at 188.32. Of 5,719 US stocks that traded, 1,574 rose and 1,800 fell.

The S&P 500-0.33%closed at 188.32
How big a move#15,750of 24,799 trading days since 1928
$100 in the index since$4,091price only, to September 24, 2026
Stocks that rose1,574of 5,719; 1,800 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for6stocks

Biggest rises among the 500 largest companies

Richardson-Vicks Inc (RVI)+5.1%
Shoney's Inc+4.3%
H.F. Ahmanson (AHM)+3.6%

Biggest falls among the 500 largest companies

Marion Merrell Dow Inc (MKC)-3.5%
Ceridian Corp (CEN)-3.3%
Nabisco Group Holdings (NGH)-3.0%

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

‹ August 8, 1985 · Every August 9 · August 12, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.