Taipei: The Taiwan Stock Exchange's main index began the week on a downward trend, opening 137.01 points lower at 35,277.48. The market experienced a turnover of NT$12.47 billion, equivalent to approximately US$398 million. According to Focus Taiwan, the early decline in the index reflects current market conditions and investor sentiment. The performance of the stock exchange at the start of the trading session is closely watched by analysts and investors for indications of broader economic trends.