AMC Entertainment Holdings AMC.N tumbled 31.5% after peer Cineworld CINE.L, the world's second-largest cinema operator warned of a possible bankruptcy filing. A four-week summer rally for the Nasdaq and the S&P 500 snapped last week as megacap growth companies slumped on Friday, with the benchmark 10-year Treasury yield hitting nearly 3% on inflation fears. According to economists in a Reuters poll, the Fed will raise rates by 50 basis points in September amid expectations inflation has peaked and growing recession worries.