Underfolio

Every trading day › 2025

The stock market on January 21, 2025

January 21, 2025, a Tuesday. The S&P 500 rose 0.88% to close at 6049.24. Of 3,532 US stocks that traded, 2,567 rose and 893 fell.

The S&P 500+0.88%closed at 6049.24
How big a move#7,160of 24,799 trading days since 1928
$100 in the index since$127price only, to September 24, 2026
Stocks that rose2,567of 3,532; 893 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

Rocket Lab USA (RKLB)+30.3%
Summit Therapeutics PLC (SMMT)+16.1%
Sofi Tech (SOFI)+8.5%

Biggest falls among the 500 largest companies

Astera Labs, Inc. (ALAB)-6.7%
Rivian (RIVN)-6.5%
Erie Indemnity (ERIE)-6.0%

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

‹ January 17, 2025 · Every January 21 · January 22, 2025 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.