Tech drags S&P 500, Nasdaq lower as Iran tensions, Nvidia earnings loom
By Purvi Agarwal and Niket Nishant Aug 24 (Reuters) - The S&P 500 and the Nasdaq fell on Monday, dragged by technology stocks, while investors assessed the potential fallout from the U.S. pledge of an "economic D-Day" against Iran and looked ahead to Nvidia's earnings and a key inflation report