芯片股力撑纳指盘中新高，道指转跌，医药股回落，中概强势，阿里一度涨超5%

Group 1 - The U.S. government shutdown is causing noticeable disruptions in economic data, leading to mixed performance in major U.S. stock indices [1] - Chip stocks are identified as a primary driver for the market's upward movement, while Chinese concept stocks are gaining strength [1] - The pharmaceutical sector, which had been a strong performer in the previous days, is experiencing a pullback [1] Group 2 - The release of key economic data, including weekly unemployment claims and August durable goods orders, has been delayed due to the government shutdown [1] - Major U.S. stock indices opened higher collectively, with the Nasdaq and S&P 500 reaching intraday record highs before diverging in performance [1] - The Nasdaq maintained its upward trend, while the S&P 500 retraced most of its gains and the Dow Jones turned negative [1]