Investors will watch in coming weeks how Corporate America mitigates the impact on earnings from supply chain disruptions, labor shortages and higher costs, especially in the wake of rising oil prices. Walt Disney DIS.N fell 1.6% after Barclays downgraded the media giant's stock to "equal weight" from "overweight". By Devik Jain Oct 18 (Reuters) - U.S. stock index futures edged lower on Monday, led by technology shares, ahead of a slate of earnings reports this week, while a relentless surge in oil prices fueled concerns about elevated inflation.