Indonesian shares fell to their lowest in more than two weeks on Thursday while other Southeast Asian stocks mostly slipped into negative territory amid rising risk aversion after the US Federal Reserve's policy outlook was seen as less dovish than expected. Jakarta's Composite Index (JCI) was down 1.4 percent at 4,510.63, its lowest close since October 16. The blue chip index dropped 1.9 percent, with Bank Mandiri and Indocement among the actively traded stocks.
The selldown was partly due to profit-taking after listed firms released their July-September earnings, said John Teja, director of broker Ciptadana Securities in Jakarta.
The benchmark rose 4.5 percent on the month, building on a 2.9 percent gain in the previous month.
The region extended its gains for a second month, with the Philippines adding 6.4 percent in October, Southeast Asia's best performer, ahead of Malaysia's 2.2 percent, Singapore's 1.4 percent and Vietnam's 1 percent.
In Bangkok, the SET index recouped earlier losses, closing up 0.8 percent amid bargain hunting in beaten-down large caps led by Kasikornbank which jumped 3.3 percent.
The index was up 4.3 percent in October.
Trading was relatively thin amid domestic political tensions as the Thai lower house debated a political amnesty bill on Thursday while anti-government protesters vowed to begin a rally later in the day.