Underfolio

Every trading day › 1977

The stock market on January 20, 1977

January 20, 1977, a Thursday. The S&P 500 fell 0.85% to close at 102.97. Of 4,686 US stocks that traded, 1,077 rose and 1,523 fell.

The S&P 500-0.85%closed at 102.97
How big a move#7,491of 24,799 trading days since 1928
$100 in the index since$7,482price only, to September 24, 2026
Stocks that rose1,077of 4,686; 1,523 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Airco Inc (AN)+5.0%
Robins (A.H.) Co (QRAH)+3.7%
Coastal+3.2%

Biggest falls among the 500 largest companies

Pioneer Hi-Bred International, Inc. (PHB)-5.0%
Aetna (AET)-4.6%
Lowe's (LOW)-4.5%

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

‹ January 19, 1977 · Every January 20 · January 21, 1977 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.