Underfolio

Every trading day › 1985

The stock market on October 29, 1985

October 29, 1985, a Tuesday. The S&P 500 rose 0.78% to close at 189.23. Of 5,733 US stocks that traded, 2,084 rose and 1,362 fell.

The S&P 500+0.78%closed at 189.23
How big a move#8,210of 24,799 trading days since 1928
$100 in the index since$4,071price only, to September 24, 2026
Stocks that rose2,084of 5,733; 1,362 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Coastal+5.9%
MCI Communications (MCIC.)+5.5%
Ambase Corp (ABCP)+5.3%

Biggest falls among the 500 largest companies

Amerada Hess (AHC)-6.3%
Unicom (UCM)-4.7%
Enron (ENRNQ)-4.4%

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

‹ October 28, 1985 · Every October 29 · October 30, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.