Underfolio

Every trading day › 1989

The stock market on August 21, 1989

August 21, 1989, a Monday. The S&P 500 fell 1.55% to close at 340.67. Of 5,930 US stocks that traded, 1,168 rose and 2,502 fell.

The S&P 500-1.55%closed at 340.67
How big a move#2,878of 24,799 trading days since 1928
$100 in the index since$2,261price only, to September 24, 2026
Stocks that rose1,168of 5,930; 2,502 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Walt Disney (DIS)+3.1%
Navistar International (NAV)+2.6%
ALZA Corporation (AZA)+2.5%

Biggest falls among the 500 largest companies

S&P Global (MHP)-5.9%
Georgia Gulf (GGC)-5.5%
Newell Rubbermaid (NWL)-4.9%

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

‹ August 18, 1989 · Every August 21 · August 22, 1989 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.