Underfolio

Every trading day › 1977

The stock market on September 23, 1977

September 23, 1977, a Friday. The S&P 500 fell 0.05% to close at 95.04. Of 4,647 US stocks that traded, 1,233 rose and 1,086 fell.

The S&P 500-0.05%closed at 95.04
How big a move#23,278of 24,799 trading days since 1928
$100 in the index since$8,106price only, to September 24, 2026
Stocks that rose1,233of 4,647; 1,086 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

Dow Jones (DJ)+5.0%
Mesa Inc (MXP.)+4.5%
Carrier (CRR)+3.5%

Biggest falls among the 500 largest companies

Litton Industries (LIT)-9.1%
Airco Inc (AN)-4.2%
Champion International (CHA)-4.0%

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

‹ September 22, 1977 · Every September 23 · September 26, 1977 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.