Wall Street set for flat open on mixed earnings reports

U.S. stock indexes were set to open flat on Friday as investors assessed mixed quarterly reports from bellwether companies such as Caterpillar and McDonald's. With recent economic data indicating a sluggish pace of economic growth globally and crude prices hovering near five-month highs, earnings have become a swing factor for stocks. The S&P 500 has staged a sharp recovery from a steep selloff earlier this year and is inching towards its all-time high, helped by a recent rebound in oil, a c