Thursday's Winners & Losers: Hologix

Analysts surveyed by Thomson Financial were looking for $70.6 million, and 28 cents a share, on revenue of $418 million.

Spokane, Wa.'s Gold Reserve (GRZ Quote) shares tumbled 14.4% to $2.38. The company announced that the Venezuelan Ministry of the Environment has announced it will rescind a March 2007 permit relating to its mining projects in the country. JPMorgan and RBC Capital Markets followed that news with downgrades to neutral from overweight and to underperform from outperform, respectively.

Shares of timeshare acquirer and developer Silverleaf Resorts (SVLF Quote), a Dallas company, tacked on 29.6% to $2.85. For the first quarter, net income rose 13% year over year to $7.4 million. Earnings per share climbed 12% to 19 cents, and revenue was up 22% to $65.1 million. The company guided for 2008 EPS of 70 cents.