Taipei: The Taiwan Stock Exchange's main index opened with a gain, rising 11.51 points to reach 22,503.85. The early trading session on Friday recorded a turnover of NT$4.817 billion, equivalent to US$165.56 million.According to Focus Taiwan, this positive start reflects the market's initial response as investors engage in the trading day. The index's incremental rise suggests a stable beginning to the day's financial activities on the Taiwan Stock Exchange.