The investment objective of the iShares S&P GSCI Commodity-Indexed Trust is to seek investment results, through the Trust's investment in the iShares S&P GSCI Commodity-Indexed Investing Pool, that correspond generally to the performance of the S&P GSCI Total Return Index before payment of the Trust's and the Investing Pool's expenses and liabilities. The Index is intended to reflect the performance of a diversified group of commodities.