By David Russell, reporter at OptionMonsterNEW YORK -- Fortress Investment ( FIG) pulled back Thursday and the bulls piled in. OptionMonster's trade scanners detected the purchase of 2,200 September 6 calls for $1.25 to $1.40. The volume exceeded the strike's previous open interest of 1,438 contracts, indicating that new positions were implemented. The investor now has the right to buy shares in the hedge-fund/private-equity company for $6 through expiration. The cheapness of the calls relative to the stock limits the amount of capital at risk and creates the possibility of significant leverage in the event of a rally. For instance, a 25% gain would more than double the value of the options. The stock price was unchanged when the trade hit, but it ended the session up 1.84% to $7.18. It's been riding a wave of bullish sentiment toward the broader market and also benefits from owning a large slug of high-flier Nationstar Mortgage. Total option volume was twice the daily average Thursday, with calls outnumbering puts by more than 10 to 1. Russell has no positions in FIG.