On March 12, 2025, major U.S. stock indices showed positive performance throughout the trading day. The Nasdaq Composite Index ($QQQ) increased by 1.22% by the market's close, while the S&P 500 ($SPY) rose by 0.49%. The Russell 2000 ($IWM) also experienced a gain of 0.14%, while the Dow Jones Industrial Average ($DJI) saw a slight decline of 0.20%. Early premarket trading indicated a positive trend, with the S&P 500 up by 0.9%, the Nasdaq up by 1.1%, and the Russell 2000 up by 0.7%. The closing heatmap reflected these trends, with the S&P 500 and Nasdaq both showing strong gains, while the Dow lagged behind.