Taipei: The Taiwan Stock Exchange's main index opened up 36.96 points at 47,142.74 Wednesday on turnover of NT$8.53 billion (US$270.63 million).According to Focus Taiwan, the modest gains in the market come amid investor optimism and a steady influx of capital. Market analysts are closely watching the trading patterns, as the turnover indicates a significant level of activity and interest from both domestic and international investors.