The shock of “negative oil prices” has reverberated throughout the world, bringing home the nature of the current economic slowdown caused by Covid-19 and the measures to fight it. This week, one particular oil price — the price of West Texas Intermediate (WTI) crude oil, for delivery in May— fell as low as (-) $38 a barrel on April 20, the last day before they were due to expire. In other words, for some producers in the US, it was cheaper to pay people to take away the oil from Cushing, Oklahoma — the traditional and outdated hub for WTI — than it was to find storage or to shut down their wells. Little is known about the technological factors behind the long-term stress on some US shale oil wells, and there is concern that ceasing output from them might cause lasting damage. Thus, the negative futures price, which has swiftly rebounded. June futures for WTI are close to $12 a barrel. Futures further out have also been hammered in the last month’s trading, but suggest the market still believes in a snap back to levels above $30 a barrel for Brent crude, the headline price, by October, and to above $35 a barrel by this time next year. Brent crude is currently trading below $20 a barrel.

)