MGM Resorts International is an S&P 500 gaming and entertainment company headquartered in Las Vegas (NYSE: MGM), incorporated in Delaware in 1986, that runs hotel-casinos such as Bellagio, MGM Grand, ARIA, Mandalay Bay and Borgata in Las Vegas and regional US markets, plus MGM China in Macau and the MGM Osaka project. It also owns BetMGM sports betting and online gaming jointly, and had about 78,000 employees at the end of 2025.