Underfolio

Every trading day › 2026

The stock market on April 20, 2026

April 20, 2026, a Monday. The S&P 500 fell 0.24% to close at 7109.14. Of 3,433 US stocks that traded, 1,828 rose and 1,500 fell.

The S&P 500-0.24%closed at 7109.14
How big a move#18,043of 24,799 trading days since 1928
$100 in the index since$108price only, to September 24, 2026
Stocks that rose1,828of 3,433; 1,500 fell
Biggest companyNvidiaby market value that day

Biggest rises among the 500 largest companies

Avis Budget Group Inc (CAR)+23.3%
Marvell Technology Group Ltd (MRVL)+5.8%
Rocket Lab USA (RKLB)+5.5%

Biggest falls among the 500 largest companies

Nrg Energy Inc (NRG)-6.3%
AST SpaceMobile, Inc. (ASTS)-5.3%
Talen Energy Corp (TLN)-5.2%

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

‹ April 17, 2026 · Every April 20 · April 21, 2026 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.