With U.S. stock futures trading lower this morning on Tuesday, some of the stocks that may grab investor focus today are as follows: Wall Street expects General Motors Company (NYSE:GM) to report quarterly earnings at $2.43 per share on revenue of $44.59 billion before the opening bell, according to data from Benzinga Pro. GM shares gained 0.8% to $49.31 in after-hours trading.Zions Bancorporation (NASDAQ:ZION) reported better-than-expected financial results for the third quarter on Monday. Zions Bancorporation shares gained 3.2% to $51.00 in the after-hours trading session.Analysts are expect…