The world’s biggest oil traders are counting hefty losses after a surprise doubling in the price discount of U.S. light crude to benchmark Brent WTCLc1-LCOc1 in just a month, as surging U.S production upends the market. Trading desks of oil major BP ( BP.L ) and merchants Vitol [VITOLV.UL], Gunvor [GGL.UL] and Trafigura [TRAFG.UL] have recorded losses in the tens of millions of dollars each as a result of the “whipsaw” move when the spread reached more than $11.50 a barrel in June, insiders familiar with their performance told Reuters. The sources did not give precise figures for the losses, but they said they were enough for Gunvor and BP to fire at least one trader each. The companies declined […]