MGM Resorts (MGM), the major casino operator, is seeing some unusual options volume ahead of its Oct. 30 earnings announcement. MGM normally trades about 11,000 options per day, but that number recently spiked to more than 36,000.

A big player looks to have rolled forward 4,500 calls which make money if MGM shares moves higher during earnings week. This is likely a straight bullish play that MGM is going to post better than expected earnings.