Underfolio

Every trading day › 1989

The stock market on September 11, 1989

September 11, 1989, a Monday. The S&P 500 fell 0.32% to close at 347.66. Of 5,908 US stocks that traded, 1,338 rose and 2,299 fell.

The S&P 500-0.32%closed at 347.66
How big a move#16,195of 24,799 trading days since 1928
$100 in the index since$2,216price only, to September 24, 2026
Stocks that rose1,338of 5,908; 2,299 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

Manufactures Hanover (MHC)+7.3%
American Airlines Group (AMR)+3.4%
Golden West Financial (GDW)+3.2%

Biggest falls among the 500 largest companies

Broadwing Inc (BRW)-4.3%
TJX Companies, Inc. (The) (TJX)-3.3%
Fluor (FLR)-3.2%

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

‹ September 8, 1989 · Every September 11 · September 12, 1989 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.