Underfolio

Every trading day › 2026

The stock market on January 15, 2026

January 15, 2026, a Thursday. The S&P 500 rose 0.26% to close at 6944.47. Of 3,508 US stocks that traded, 2,085 rose and 1,321 fell.

The S&P 500+0.26%closed at 6944.47
How big a move#17,508of 24,799 trading days since 1928
$100 in the index since$111price only, to September 24, 2026
Stocks that rose2,085of 3,508; 1,321 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

Penumbra Inc (PEN)+11.8%
Talen Energy Corp (TLN)+11.8%
Entegris Inc (ENTG)+9.1%

Biggest falls among the 500 largest companies

Reddit, Inc. (RDDT)-9.4%
Robinhood (HOOD)-7.8%
Coinbase Global (COIN)-6.5%

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

‹ January 14, 2026 · Every January 15 · January 16, 2026 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.