BetMGM CEO Adam Greenblatt knows Fanatics and ESPN Bet are looking to eat his lunch. However, it has lost some ground, hovering around 15% market share in the third quarter compared to about 20% a year earlier. And a new crop of competitors including Fanatics and Penn Entertainment's ESPN Bet are vying for its position. "Everyone's kind of fighting for that third and fourth spot," Macquarie gambling analyst Chad Beynon told Business Insider in September. Online casino gaming, also known as igaming, is legal in only a handful of US states and has expanded slower than legal sports betting.

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Persons: Adam Greenblatt, BetMGM, Penn, Macquarie, Chad Beynon, Greenblatt, We've, we're, Entain, we've, we'll, " Greenblatt, it's Organizations: ESPN Bet, Krejcik, MGM Resorts, Business, BI, MGM, Detroit Lions Locations: North America, Borgata's, Atlantic City, Michigan