Wall Street Tumbles on Trump Tariff Shock After Supreme Court Blow

Wall Street's main indexes opened sharply lower Monday, February 23, as tariff uncertainty hammered risk appetite after President Donald Trump imposed a temporary 15% duty under Section 122 of trade law. The move came days after the Supreme Court struck down his broader 'Liberation Day' tariffs authorized via the International Emergency Economic Powers Act (IEEPA).[1][2] The Dow Jones Industrial Average dropped 89.4 points, or 0.18%, to 49,536.54 at the bell, while the S&P 500 fell 8.3 points, or 0.12%, to 6,901.25 and the Nasdaq Composite slid 45.1 points, or 0.20%, to 22,840.97.[1] The selloff broadened quickly, with all major indexes down more than 1% in early trading and the Dow breaching its 50-day moving average at 49,080—a level not seen since November—for the first time in months.[2] Tech heavyweights Microsoft, Amazon, Oracle and Tesla, which had rallied Friday, reversed course amid the rout, joining financials in steep declines. Healthcare and communications sectors offered rare pockets of resilience, but the morning's bearish candle signaled deepening downside as long as prices stayed below the pivotal 49,000 zone.[2] Trump's tariff framework piles on existing pressures, including a proposed 50% levy on Chinese goods atop the current 20% rate, plus 34% duties set for Wednesday. A false report of a 90-day tariff pause briefly sparked a Dow recovery attempt, but volatility persisted through the session.[3] The S&P 500 opened with a sharp drop before clawing back slightly to end the day down just 0.25%, underscoring the day's rollercoaster mood.[3] Technicals paint a cautious picture: Dow support looms at 48,600-48,700, with deeper levels at 47,500 and 45,000; Nasdaq eyes 24,500-25,600 as immediate support; S&P 500 tests 6,830-6,850.[2] Investors eye Thursday's U.S.-Iran diplomatic talks in Geneva and looming PPI data, even as the Fed holds firm against rate cuts. Bulls must defend 48,000 on the Dow to avert a wider correction.[2]