Underfolio

Every trading day › 1987

The stock market on October 13, 1987

October 13, 1987, a Tuesday. The S&P 500 rose 1.66% to close at 314.52. Of 6,396 US stocks that traded, 2,204 rose and 1,874 fell.

The S&P 500+1.66%closed at 314.52
How big a move#2,501of 24,799 trading days since 1928
$100 in the index since$2,449price only, to September 24, 2026
Stocks that rose2,204of 6,396; 1,874 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Media General Inc -old (MEG)+9.1%
Safeco (SAFC)+9.0%
Amax Inc. (AMX)+7.2%

Biggest falls among the 500 largest companies

Compaq Computer (CPQ)-5.3%
Petrie Stores Liquidation Tr-4.5%
Homestake Mining (HM)-3.4%

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

‹ October 12, 1987 · Every October 13 · October 14, 1987 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.