Stock Market Today: Stocks Jump on Supreme Court Tariff Ruling; GDP, Inflation Data in Focus

Market Overview - Major stock indexes declined in premarket trading, influenced by economic reports affecting the Federal Reserve's interest rate decision [1] - Dow Jones Industrial Average futures were down 0.2%, S&P 500 futures also decreased, and Nasdaq 100 futures slipped 0.3% [1] Economic Indicators - The Personal Consumption Expenditures (PCE) price index rose 2.9% year-over-year in December, exceeding economists' expectations [2] - Core inflation increased to 3% from 2.8% in November, aligning with forecasts [2] - U.S. GDP grew at an annualized rate of 1.4%, significantly below expectations and down from 4.4% in the previous quarter [2] Treasury Yields - The 10-year Treasury yield rose slightly to 4.07% following the inflation and GDP reports, although yields are down slightly since the beginning of the year [3] Company Performance - Applovin (APP) shares rose 4% amid reports of developing a social media platform [4] - Grail (GRAL) shares fell nearly 50% after disappointing trial results for a cancer treatment [4] - Akamai Technologies (AKAM) shares dropped 8% due to first-quarter guidance falling short of estimates [4] Commodity Prices - West Texas Intermediate crude oil futures were slightly down at $66.25 per barrel [5] - Gold futures increased by about 1% to $5,050 per ounce, while silver gained 4% to trade at $80.65 per ounce [5] - Bitcoin was trading slightly below $67,000, down from earlier highs above $68,000 [5] - The U.S. dollar index slipped 0.1% to 97.80 [5]