BUZZ — MGM Resorts falls after People Inc withdraws bid
* MGM Resorts' shares fall about 9% to $34.50 in extended trading * Media mogul Barry Diller's People Inc says it withdraws bid for MGM * Diller's People Inc proposed in June to buy MGM, valuing co at more than $18 billion * People Inc says it remains open to strategic transaction and alternatives with MGM * People's c