Taipei: The Taiwan Stock Exchange's main index opened down 85.73 points at 25,543.91 on Wednesday. The opening turnover was reported at NT$6.08 billion, equivalent to US$202.3 million.According to Focus Taiwan, this decline in the index reflects market reactions to recent developments and investor sentiments. The performance of the stock exchange is closely monitored as it provides insights into economic trends and financial stability in the region.