MGM up around 30% since the judicial system reversed its decision on online gambling last month and MGM is getting loads of attention since it's already in place with a database of tens of millions of gamblers. It could also explain with Harrahs and MGM were pumping Harry Reid so hard during the election cycle when he mysteriously* beat Sharon Angle in his last senate run.
*Reid looked all but dead in the final weeks, only to win big.
RealClearPolitics - Election 2010 - Nevada Senate - Angle vs. Reid