Facebook Inc FB.O, Google-parent Alphabet GOOGL.O, Microsoft Corp MSFT.O, Amazon.com Inc AMZN.O, Intel Corp and Advanced Micro Devices Inc AMD.O slipped between 0.1% and 0.7%. 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. 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.