Global stocks steadied Thursday after U.S. equities endured their worst start to a new quarter on record, while oil jumped 10% on hopes of an end to the price war between Russia and Saudi Arabia. Futures tied to the S&P 500 rose 1.4%, suggesting the blue-chip index may recover some of its losses when trading gets under way in New York. European stocks ticked higher, pushing the Stoxx Europe 600 index up 0.4%, after a mixed session for equities in Asia. …