The Thai benchmark index fell 0.2 percent from its highest since April 1996, led by a 2.2 percent fall in the country's top oil and gas explorer, PTT Exploration and Production Pcl, after the company announced plans on Friday to raise $3 billion in a share offer.
Singapore ended a tad weaker, down 0.1 percent. Indonesia lost 0.8 percent to close at a two-month low, with $56 million in foreign outflows. Banks led the fall, with Bank Central Asia (BCA) dropping 7.9 percent. The Philippine benchmark index ended at 5,706.28, above Monday's record of 5,672.70, on strong trading volumes, with conglomerate Aboitiz Equity Ventures Inc gaining 2.5 percent. Vietnam rose 0.8 percent, while Malaysia ended steady.