BCI is tracks a highly liquid, broad indexthe Bloomberg Commodity Indexcombined with the return of 3-month T-bills. The index includes up to 25 commodity futures contracts in the agriculture, energy, livestock, and metals sectors. Futures positions are weighted 2/3 by trading volume and 1/3 by world production. The index rebalances each January with weight-caps applied at the sector level. Contract tenor selection is determined by a set roll schedule that varies by commodity. The fund manages its commodity exposure through a wholly owned Cayman Islands subsidiary, a common structure in the commodity ETF space.