Underfolio

Every trading day › 2026

The stock market on April 17, 2026

April 17, 2026, a Friday. The S&P 500 rose 1.20% to close at 7126.06. Of 3,433 US stocks that traded, 2,557 rose and 769 fell.

The S&P 500+1.20%closed at 7126.06
How big a move#4,531of 24,799 trading days since 1928
$100 in the index since$108price only, to September 24, 2026
Stocks that rose2,557of 3,433; 769 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

Microstrategy Inc (MSTR)+11.8%
Avis Budget Group Inc (CAR)+10.0%
Onto Innovation Inc. (ONTO)+8.8%

Biggest falls among the 500 largest companies

Dow (DOW)-10.8%
Cf Industries Holdings Inc (CF)-9.7%
Albemarle Corporation (ALB)-8.3%

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

‹ April 16, 2026 · Every April 17 · April 20, 2026 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.