FAP, June 1 (Xinhua)-- the three major indexes of US stocks collectively closed down, with the Nasdaq down 0.63% and rising 5.8% in May; the S & P 500 index fell 0.6% and rose 0.26% in May; the Dow fell 0.4% and fell 3.48% in May. Among them, the Nasdaq and the S & P 500 index rose three months in a row.