Diesel Inventories Have Done Something In The U.S. Not Seen In At Least 30 Years

The primary reason has been refiners making too much non-jet fuel distillate relative to demand. Diesel is a distillate; so is jet fuel. The result has been that distillate/diesel inventories in the U.S. and the world have been at historically high levels. (Other products besides diesel in the category would include heating oil.)