WTI crude goes negative: May contract closes at -$37.63

The May 2020 WTI crude oil futures contract settled at negative $37.63 per barrel on April 20 2020, the first-ever negative close in oil futures history. The contract was expiring next session (April 21), and Cushing Oklahoma storage was effectively full. Long positions unable to take physical delivery had to pay buyers to take the contract off their hands. The proximate cause was Storage collapse meeting expiring-contract mechanics.

The session is a textbook case of derivative mechanics dominating spot fundamentals. The June contract traded at $21/bbl while May collapsed to -$37, a $58 calendar spread. Brent crude, traded on ICE with different settlement mechanics, stayed at $25. Retail USO holders (the oil ETF) were trapped: USO held May contracts and the liquidity vacuum forced a painful roll. USO would halt creations in the following days and restructure its mandate.

The negative print, while technically artificial (physical crude never traded at negative prices at Cushing), had durable effects. It revealed the extreme pandemic demand shock and accelerated OPEC+ production cuts that ultimately returned oil to $30+ by May end. It also triggered a wave of bankruptcy filings among US shale producers through 2020. And it established that futures markets can disconnect from spot markets when physical infrastructure constraints bind, a lesson re-applied in 2022's nickel squeeze on the LME.