Taipei: The Taiwan Stock Exchange's main index started the trading week on a lower note, opening down by 27.09 points at 22,548.98. The early trading witnessed a turnover of NT$5.56 billion, equivalent to US$169.31 million.According to Focus Taiwan, the decline in the index reflects investor sentiment at the start of the week. The market's performance is closely monitored as local and global factors continue to influence trading activities. The turnover indicates the level of trading interest and participation in the market during the opening session.