Underfolio

Every trading day › 1986

The stock market on April 17, 1986

April 17, 1986, a Thursday. The S&P 500 rose 0.33% to close at 243.03. Of 5,751 US stocks that traded, 2,174 rose and 1,591 fell.

The S&P 500+0.33%closed at 243.03
How big a move#15,732of 24,799 trading days since 1928
$100 in the index since$3,170price only, to September 24, 2026
Stocks that rose2,174of 5,751; 1,591 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

Molex (MOLX)+12.6%
Union Carbide+8.5%
RiteAid (RAD)+7.7%

Biggest falls among the 500 largest companies

Xerox (XRX)-7.2%
Wang Labs Inc (WANG)-6.9%
Genentech Inc (DNA)-6.8%

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

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

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.