Underfolio

Every trading day › 1987

The stock market on March 12, 1987

March 12, 1987, a Thursday. The S&P 500 rose 0.31% to close at 291.22. Of 6,096 US stocks that traded, 2,125 rose and 1,792 fell.

The S&P 500+0.31%closed at 291.22
How big a move#16,236of 24,799 trading days since 1928
$100 in the index since$2,645price only, to September 24, 2026
Stocks that rose2,125of 6,096; 1,792 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Newmont Gold Co (NGC)+9.3%
Himont Inc (HMT)+6.5%
Fluor (FLR)+6.3%

Biggest falls among the 500 largest companies

Continental Airlines-4.6%
Owens Corning (OWC)-4.2%
Delhaize America Inc-4.1%

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

‹ March 11, 1987 · Every March 12 · March 13, 1987 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.