European shares open flat; London leads on oil boost

Shares of Indivior Plc surged 11% to top the STOXX 600 Index after the drugmaker agreed to pay $102.5 million to settle a lawsuit for its opioid addiction treatment Suboxone.

European shares opened flat on Monday as markets failed to catch the tailwind from a bounce seen last week, while London stocks led regional gains following upbeat performances by energy firms on the back of higher oil prices.

The pan-European STOXX 600 index held its ground at 462.46 points, while London's FTSE 100 index led gains with a 0.5% climb. The European oil & gas sector index rose 1%, buttressed by stronger oil prices after top global exporter Saudi Arabia pledged to cut production by another 1 million barrels per day from July.

Markets struggled to carry forward the optimism from gains posted on Friday after euro zone inflation eased, the U.S. averted a debt default, and as growing evidence fuelled bets that the U.S. Federal Reserve might pause interest rate hikes this month. Shares of Indivior Plc surged 11% to top the STOXX 600 Index after the drugmaker agreed to pay $102.5 million to settle a lawsuit for its opioid addiction treatment Suboxone.