OOO – Backwardation, page-3

Correct me if i'm wrong, are the Fund managers forced to use 100% of the capital to keep buying and selling the futures ? if thats the case the fund will run out of money. My thoughts are the fund managers will buy and sell but the amount used will be based on current situations, with their experince im sure they would limit the amount traded during Contango (buying high selling low) and buy more contracts when its backwardation ? And any profits will be seen in the distributions. The shareprice may be pegged to the index.