Underfolio

Every trading day › 1986

The stock market on July 17, 1986

July 17, 1986, a Thursday. The S&P 500 rose 0.45% to close at 236.07. Of 5,889 US stocks that traded, 2,052 rose and 1,691 fell.

The S&P 500+0.45%closed at 236.07
How big a move#13,362of 24,799 trading days since 1928
$100 in the index since$3,263price only, to September 24, 2026
Stocks that rose2,052of 5,889; 1,691 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Home Shopping Network+12.6%
Primerica, Inc. (PRI)+12.6%
Maxus Energy (MXS)+11.4%

Biggest falls among the 500 largest companies

Fluor (FLR)-8.3%
Harcourt General (H)-8.1%
Olin (OLN)-5.7%

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

‹ July 16, 1986 · Every July 17 · July 18, 1986 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.