The three major US stock indices collectively closed higher, with the Nasdaq up 1.38% and a cumulative increase of 6.61% this week; The S&P 500 index rose 0.94%, with a cumulative increase of 5.85% this week; The S&P 500 index and Nasdaq both recorded their largest weekly gains since mid November last year; The Dow rose 0.66%, with a cumulative increase of 5.07% this week, marking its largest weekly gain since late October last year.