Underfolio

Every trading day › 1988

The stock market on September 9, 1988

September 9, 1988, a Friday. The S&P 500 rose 0.36% to close at 266.84. Of 6,162 US stocks that traded, 2,051 rose and 1,559 fell.

The S&P 500+0.36%closed at 266.84
How big a move#15,172of 24,799 trading days since 1928
$100 in the index since$2,887price only, to September 24, 2026
Stocks that rose2,051of 6,162; 1,559 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Fluor (FLR)+6.0%
Intel (INTC)+5.7%
Oracle (ORCL)+5.3%

Biggest falls among the 500 largest companies

TJX Companies, Inc. (The) (TJX)-3.4%
Liz Claiborne (LIZ)-3.1%
Alexander & Alexander (AAL)-2.6%

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

‹ September 8, 1988 · Every September 9 · September 12, 1988 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.