Underfolio

Every trading day › 1985

The stock market on September 6, 1985

September 6, 1985, a Friday. The S&P 500 rose 0.52% to close at 188.24. Of 5,714 US stocks that traded, 1,856 rose and 1,446 fell.

The S&P 500+0.52%closed at 188.24
How big a move#12,162of 24,799 trading days since 1928
$100 in the index since$4,093price only, to September 24, 2026
Stocks that rose1,856of 5,714; 1,446 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Mca Inc. (MCA)+10.6%
Richardson-Vicks Inc (RVI)+9.6%
Entergy (ETR)+6.7%

Biggest falls among the 500 largest companies

Texas Commerce Bancshares (TCB)-5.7%
Monsanto (MTC)-4.4%
First Boston Inc (FBC)-3.2%

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

‹ September 5, 1985 · Every September 6 · September 9, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.