The index of the Indonesian Stock Exchange (BEI) rose 49.17 percent to 5,215.26 points with index of 45 most liquid stocks up 1.34 percent to 902.82 points.
"Capital inflow to the domestic market pushed up the JCI to cross the level of 5,200," Asjaya Indosurya Securities analyst William Suryawijaya said.
The trade on Wednesday was marked with a foreign net buy of Rp218.085 billion.
William said optimism shown by the government that the countrys economy would grow 5.8 percent this year driven by investment in infrastructure was a factor drawing more foreign capital to the market.
"In addition the regional market condition is also encouraging," he said.
There were 233,475 transaction in the BEI on Wednesday with 4.01 billion shares valued at Rp5.42 trillion changing hands.
Gainers outnumbered decliners by 713 to 151 shares with 88 shares remaining flat.
Regional markets such as Hang Seng and Straits Times recorded gain but Nikkei declined.(*)
Editor: Heru Purwanto
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