Underfolio

Every trading day › 1988

The stock market on October 4, 1988

October 4, 1988, a Tuesday. The S&P 500 fell 0.28% to close at 270.62. Of 6,139 US stocks that traded, 1,718 rose and 1,861 fell.

The S&P 500-0.28%closed at 270.62
How big a move#16,998of 24,799 trading days since 1928
$100 in the index since$2,847price only, to September 24, 2026
Stocks that rose1,718of 6,139; 1,861 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Pillsbury Co+46.2%
Ryder System (R)+6.1%
DTE Energy (DTE)+6.0%

Biggest falls among the 500 largest companies

Ethyl (NEU)-3.4%
Intel (INTC)-3.3%
Electronic Data Systems (EDS.)-3.2%

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

‹ October 3, 1988 · Every October 4 · October 5, 1988 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.