Taipei: The Taiwan Stock Exchange's main index opened up 139.88 points at 44,872.82 Monday on turnover of NT$22.53 billion (US$712.47 million).According to Focus Taiwan, this increase in the index reflects a positive start to the week for investors and market participants. The turnover of NT$22.53 billion indicates active trading, suggesting investor confidence in the market's performance.The opening figures mark a significant movement in the stock exchange, with traders watching closely for further developments as the day progresses. The performance of the index will be monitored to assess its impact on broader market trends.