Underfolio

Every trading day › 2025

The stock market on December 12, 2025

December 12, 2025, a Friday. The S&P 500 fell 1.07% to close at 6827.41. Of 3,528 US stocks that traded, 1,169 rose and 2,263 fell.

The S&P 500-1.07%closed at 6827.41
How big a move#5,502of 24,799 trading days since 1928
$100 in the index since$113price only, to September 24, 2026
Stocks that rose1,169of 3,528; 2,263 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

Rivian (RIVN)+12.1%
Lululemon Athletica (LULU)+9.6%
GE Aerospace (GE)+4.0%

Biggest falls among the 500 largest companies

Astera Labs, Inc. (ALAB)-14.3%
Bloom Energy Corp (BE)-12.8%
Lumentum Holdings Inc (LITE)-12.8%

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

‹ December 11, 2025 · Every December 12 · December 15, 2025 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.