Oil posted the worst weekly loss since the early months of the coronavirus pandemic as banking turmoil poisoned investor sentiment. West Texas Intermediate lost nearly 13% this week, the largest drop in almost three years. The failure of Silicon Valley Bank and troubles at Credit Suisse Group AG drove investors from risk assets, with oil-options covering accelerating the selloff. “Crude action this week reminded many of how quickly the commodity can be decimated by macro economic events,” ....