[ad_1] Employees wait for the arrival of U.S. Vice President Mike Pence, not pictured, at a Diamondback Energy oil rig in Midland, Texas, April 17, 2019. Callaghan O’Hare | Bloomberg | Getty Images Shares of Diamondback Energy surged nearly 10%, leading the S&P 500 stock index, after the U.S. oil and gas driller reported strong …