Indonesia's benchmark stock index fell 4.5% to 4,117, the lowest level since September 2012 on Tuesday, extending a 5.6% drop the previous session.
The sell-off come amid worries about the country's wider current account deficit and about the US Federal Reserve starting to reduce its stimulus.
Underperformers included the property sector which slid 6.3%, a day after the Indonesian finance minister said the government might raise the tax base on property sector.