Taipei: The Taiwan Stock Exchange's main index experienced an upward movement as it opened up by 173.57 points, reaching a level of 21,531.29. The turnover at the start of trading was recorded at NT$6.07 billion, which is approximately US$202.60 million.According to Focus Taiwan, this increase reflects a positive sentiment among investors, contributing to the early gains observed in the market. The rise in the main index suggests a robust trading day for the Taiwan Stock Exchange, as investors react to various factors influencing the market dynamics.