Stocks slumped to a second consecutive weekly loss on Friday, as intensifying tension in the Middle East prompted caution among investors. All three major indexes fell more than 1%, and registered losses on the week. The S&P 500 index (.SPX), opens new tab notched its biggest weekly percentage loss since January, while the Dow Jones Industrial Average's (.DJI), opens new tab weekly loss was its steepest since March 2023.