Use wechat to scan QR code < / P > < p > to share with friends and circle of friends < / P > < p > us time Tuesday, < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E7%BE%8E%E8%82%A1 "> U.S. stocks < / a > closed higher because the fall in U.S. Treasury yields caused investors to turn back to the frustrated < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E7%A7%91%E6%8A%80%E8%82%A1 "> technology stocks < / a >. < / P > < p > the Dow Jones index closed at 31832.74, up 30.30 points, or 0.10%, while it once rose more than 300 points, reaching a mid day high; the standard & Poor's 500 index closed at 3875.44, up 1.42%; the Nasdaq composite index closed at 13073.82, up 3.69%, the biggest one-day gain since November this year.