Underfolio

Every trading day › 1985

The stock market on September 5, 1985

September 5, 1985, a Thursday. The S&P 500 fell 0.05% to close at 187.27. Of 5,711 US stocks that traded, 1,517 rose and 1,781 fell.

The S&P 500-0.05%closed at 187.27
How big a move#23,256of 24,799 trading days since 1928
$100 in the index since$4,114price only, to September 24, 2026
Stocks that rose1,517of 5,711; 1,781 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Avon Products (AVP)+9.6%
Kaisertech Ltd+8.7%
NiSource (NI)+6.6%

Biggest falls among the 500 largest companies

Liz Claiborne (LIZ)-3.4%
M/a-com (MAI)-3.3%
ITT Industries (IIN)-2.9%

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

‹ September 4, 1985 · Every September 5 · September 6, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.