Tech earnings tsunami buoys Alphabet, sinks Apple

Share swings following the reports from the tech heavyweights after the bell sent exchange-traded funds tracking the S&P 500and Nasdaqdown about 1% each, suggesting Wall Street may open weaker on Friday.Mostly upbeat results from Facebook , Google-parent Alphabet and Amazon, along with Microsoft'sstrong report earlier this week, show how the largest U.S. companies have expanded their businesses and outperformed smaller rivals this year as the pandemic accelerates trends toward online shoppin