Underfolio

Every trading day › 2026

The stock market on July 31, 2026

July 31, 2026, a Friday. The S&P 500 rose 0.70% to close at 7489.72. Of 3,344 US stocks that traded, 1,422 rose and 1,795 fell.

The S&P 500+0.70%closed at 7489.72
How big a move#9,276of 24,799 trading days since 1928
$100 in the index since$103price only, to September 24, 2026
Stocks that rose1,422of 3,344; 1,795 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

Amazon (AMZN)+15.3%
Dexcom (DXCM)+11.9%
Monolithic Power Systems (MPWR)+8.3%

Biggest falls among the 500 largest companies

Roblox (RBLX)-26.9%
Reddit, Inc. (RDDT)-21.0%
Mastec Inc (MTZ)-18.9%

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

‹ July 30, 2026 · Every July 31 · August 3, 2026 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.