Ecopetrol SA shares plunged after Colombian President Gustavo Petro called on the oil producer to sell its operations in the US, citing his government’s position against fracking, which he says is destructive to nature and humanity.

Ecopetrol (NYSE:EC) -2% pre-market Wednesday after Colombia's President Petro called on the state oil producer to sell its fracking operations in the U.S., citing his government's position against fracking.