With U.S. stock futures trading mixed this morning on Thursday, some of the stocks that may grab investor focus today are as follows: Wall Street expects Signet Jewelers Limited (NYSE:SIG) to report quarterly earnings at $0.85 per share on revenue of $1.51 billion before the opening bell, according to data from Benzinga Pro. Signet Jewelers shares rose 1.1% to $109.57 in after-hours trading. Broadcom Inc. (NASDAQ:AVGO) posted stronger-than-expected results for its second quarter. The company declared a quarterly dividend of ...