Ellora Energy Inc., a Boulder, Colo.-based oil and gas company, has raised the number of shares it plans to sell in its IPO from five million to eight million. It has not yet disclosed a price range, but has bumped up its original $86.25 million IPO target to $147.2 million. Ellora plans to trade on the Nasdaq under ticker symbol LORA, with AG Edwards and Friedman Billings Ramsey serving as co-lead underwriters. Ellora is a portfolio company of Yorktown Energy Partners.