CLMT ▼ -1.8% - Calumet, Inc. $CLMT CLMT - Montana Renewables Announces Innovative, Capital-Efficient Expansion to 200 Million Gallons of Sustainable Aviation Fuel Calumet shares fell 1.8% despite Montana Renewables announcing an expansion to produce 200 million gallons of sustainable aviation fuel through a capital-efficient approach. The market's muted or negative reaction suggests investors may have concerns about execution risks, capital requirements, or timeline despite the growth announcement. 01-SEP-2026 07:00 AM ET