Indonesian share prices closed 0.95 percent on Tuesday, the eighth straight day it has weakened amid mounting concern over the rupiah's extended fall and the government's seeming inaction, dealers said.
The Jakarta Stock Exchange composite index closed down 10.261 points at 1,066.092 on volume of 4.61 billion shares worth 1.25 trillion rupiah (125.13 million dollars.)
The rupiah was at 10,095-10,105 to the dollar, off a low of 10,120-10,130, compared with Monday's 10,030-10.035.
"There is nothing new to explain the stock market's fall. It is all about the rupiah," said Rudi Raharjo, a fund manager with Batavia Prosperindo Asset Management.
He said he expected selling momentum to persist amid existing market perceptions that the government was not taking concrete measures to turn the negative sentiment around.
Sentiment in the domestic financial market also suggested that Indonesia's central bank, Bank Indonesia, was unable to defend the weak rupiah because of dwindling reserves.
The LQ45 index was down 2.580 points at 232.578.
Declines led advances 97 to 36, while 56 stocks were unchanged.
State telecom firm Telkom was down 50 rupiah to 10,300 while satellite operator Indosat gained 50 at 5,300.
Cigarette maker Gudang Garam fell 400 rupiah to 11,000. Carmaker Astra International dropped 100 at 10,300 rupiah.
Bank Mandiri was down 40 to 1,510 rupiah while rival Bank Rakyat Indonesia also dropped 125 to 2,550.