Taipei: The Taiwan Stock Exchange's main index opened up 56.71 points at 26,435.1 on Friday, with a reported turnover of NT$7.7 billion (US$252.88 million).According to Focus Taiwan, the increase in the index signifies a positive start to the trading day, reflecting active investor participation and market confidence. The turnover amount indicates a significant level of trading activity, contributing to the rise in the index. The upward movement is seen as a response to various market factors influencing investor decisions.