Aventine Renewable Energy, the fourth largest domestic producer and a leading distributor of ethanol, increased the proposed price range for its IPO to $40-$43 on Wednesday. The increase from the initial proposed price range of $37-$41 is a sign of high demand for the stock. The company still plans to offer 8.06 million shares. Banc of America, Friedman Billings and Goldman Sachs are the joint book runners for the deal which is expected to price tonight.

