The stock fell 5.9% after Coronado cut FY26 saleable production guidance to 14–14.5 million tonnes and mining cash cost guidance to $105–$110 per tonne. The likely disappointment is that slower-than-planned Mammoth ramp-up, Buchanan’s disruption and the time needed to improve Curragh’s CHPPs are still constraining saleable output, despite better ROM production and lower mining costs.