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Stock market today: Dow, S&P 500, Nasdaq jump to post weekly gains as Supreme Court strikes down Trump tariffs

US stocks rose on Friday after the Supreme Court ruled that President Trump's most sweeping "Liberation Day" tariffs are unlawful, saying he lacked the authority to impose them using emergency powers. The S&P 500 rose almost 0.7%, while the Dow Jones Industrial Average gained roughly 0.5%. The tech-heavy Nasdaq Composite led gains, up nearly 0.9%. All three major averages posted weekly gains. Stocks reversed course on the heels of the decision as investors kept an eye out for US-Iran tensions and private credit jitters. The Supreme Court ruled on Friday morning that Trump overstepped his powers in invoking the International Emergency Economic Powers Act to impose tariffs on several trading partners in April.

Stocks Shrug Off Tariff Ruling, Weak GDP: Stock Market Today

On Friday, the U.S. stock market showed resilience amid a wave of significant economic and political news. The Dow Jones Industrial Average rose 0.5% to 49,625, the S&P 500 climbed 0.7% to 6,909, and the Nasdaq Composite gained 0.9% to 22,886. Investors digested weaker-than-expected GDP growth of 1.4% in Q4 2025 and hotter-than-expected PCE inflation data, which added uncertainty to the Federal Reserve’s rate path. Additionally, the Supreme Court ruled 6-3 that President Trump's use of the International Emergency Economic Powers Act to impose tariffs was illegal. However, Trump responded by imposing new tariffs under a different law. Meanwhile, LyondellBasell cut its dividend by half due to continued market challenges, and healthcare stock GRAIL plummeted over 50% after disappointing trial results for its multi-cancer detection test. Despite these headlines, markets closed higher, showing investors’ focus on long-term economic indicators and signs of resilience.

Wall Street keeps calm after the Supreme Court strikes down Trump's tariffs

On Friday, Wall Street responded with composure following the U.S. Supreme Court's decision to strike down former President Donald Trump's broad tariff policies. The S&P 500 increased by 0.7%, the Dow Jones rose by 230 points (0.5%), and the Nasdaq climbed 0.9%. Markets, which had earlier shown volatility, stabilized despite weak economic growth and rising inflation concerns. Analysts suggested that investors had anticipated the Court's ruling, contributing to the muted response.