The three major U.S. stock indexes opened lower and closed lower. The Dow initially closed down about 1,700 points, the S & P 500 fell 4.8%, and the Nasdaq fell nearly 6%. Technology stocks tumbled, Apple (AAPL. O) fell 9%, wiping about $300 billion off its market value. Amazon (AMZN. O) and NVIDIA (NVDA. O) fell 8.9% and 7.8% respectively. Intel (INTC. O) rose 2% against the market. Nasdaq China Golden Dragon fell 1.9%.