In this paper, we analyze why grain elevator operators tend to hedge hard red winter wheat at the CBoT and not at the KCBoT. They do so because they trade not only the basis but also the premium risk. Like the basis, also premiums of hard red winter wheat have a tendency to increase after harvest. Only a short hedge in the lower priced CBoT wheat contract makes it possible to participate in a post-harvest premium increase. For this reason, grain elevator operators favor a loose hedge at the CBoT. Our results underscore the importance of premium risk for hedging decisions.