Underfolio

Every trading day › 1986

The stock market on March 20, 1986

March 20, 1986, a Thursday. The S&P 500 rose 0.40% to close at 236.54. Of 5,750 US stocks that traded, 2,032 rose and 1,687 fell.

The S&P 500+0.40%closed at 236.54
How big a move#14,390of 24,799 trading days since 1928
$100 in the index since$3,257price only, to September 24, 2026
Stocks that rose2,032of 5,750; 1,687 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Genstar Corp (GST)+8.3%
Apple (AAPL)+6.6%
Lubrizol (LZ)+6.1%

Biggest falls among the 500 largest companies

Genentech Inc (DNA)-7.2%
Polaroid (PRDCQ)-4.8%
Liz Claiborne (LIZ)-4.3%

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

‹ March 19, 1986 · Every March 20 · March 21, 1986 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.