Just look at what has been going on lately:
McDonald & American express downgrades, Caterpiller big drop in stock price, Mortgage rate keep rising and Housing start slowing, China economy slowing down, Europe in bad shape, Egypt in turmoil, IMF projected U.S. and Europe slow growth. Fed's tapering of bond purchasing gets closer and closer. MGM suffered lost of market share in the world's biggest gaming hub Macau.
All adds up to a final indication - Sell your risky stocks while you can and keep the stocks with good fundamentals, preferably stocks with Dividends. MGM is not the one for sure. Don't let the pumpers mislead you.