With U.S. stock futures trading lower this morning on Monday, some of the stocks that may grab investor focus today are as follows: Wall Street expects The Greenbrier Companies, Inc. (NYSE:GBX) to report quarterly earnings at $1.14 per share on revenue of $928.73 million before the opening bell. Greenbrier shares gained 0.72% to $48.91 in the after-hours trading session.Nature Wood Group Limited (NASDAQ:NWGL) said Jianjun Zeng is stepping down as CEO due to health reasons. The company named Hubei Song as its new CEO. Nature Wood Group shares gained 2% to $2.03 in after-hours trading.Fortress B…