Underfolio

Every trading day › 2025

The stock market on May 15, 2025

May 15, 2025, a Thursday. The S&P 500 rose 0.41% to close at 5916.93. Of 3,532 US stocks that traded, 2,062 rose and 1,377 fell.

The S&P 500+0.41%closed at 5916.93
How big a move#14,066of 24,799 trading days since 1928
$100 in the index since$130price only, to September 24, 2026
Stocks that rose2,062of 3,532; 1,377 fell
Biggest companyMicrosoftby market value that day

Biggest rises among the 500 largest companies

Dollar General (DG)+6.0%
Alnylam Pharmaceuticals Inc (ALNY)+5.9%
HCA Holdings (HCA)+4.9%

Biggest falls among the 500 largest companies

Frank's International N.V. (FI)-16.2%
UnitedHealth Group (UNH)-10.9%
Reddit, Inc. (RDDT)-9.4%

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

‹ May 14, 2025 · Every May 15 · May 16, 2025 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.