港股早评：三大指数低开，科技股多数走低，昨日大涨的保险股普跌

Group 1 - The core viewpoint of the article highlights that U.S. stock indices, including the Dow Jones and S&P 500, reached new highs, while Chinese concept stocks experienced a decline of 0.78% [1] - The Hong Kong stock market opened lower, with the Hang Seng Index down by 0.41%, the National Index down by 0.3%, and the Hang Seng Tech Index down by 0.28% [1] - Major technology stocks mostly declined, with Alibaba falling by 2.45% and Baidu by 1.7%, while insurance stocks and Chinese brokerage stocks, which had led the market's rise previously, also saw declines [1] Group 2 - Semiconductor stocks and brain-computer interface concept stocks mostly increased in value [1]