Stocks fall as US-China trade war reignites after Trump threatens tariff hike
1. U.S.-China trade tensions lead to significant stock declines. 2. S&P 500 fell 2.43%, marking its worst session since August. 3. Tech and discretionary sectors drove most S&P losses. 4. Trump's tariffs on China could further exacerbate market volatility. 5. Investor interest shifted towards defensive stocks amid selloff.