Nasdaq drops 2% as disappointing Tesla and Alphabet earnings send tech lower: Live updates CNBCStock market news today: US stocks sink as Tesla, Alphabet provide gloomy kickoff to Big Tech earnings Yahoo FinanceStock Market Today: Dow Opens Lower; Tesla Stock Slides, Weighing on Nasdaq The Wall Street JournalStocks slide as Tesla, Alphabet earnings drag on megacaps ReutersStock Market Today: Dow down more than 350 points, Nasdaq falls 2.5% as big-tech earnings disappoint MarketWatch