The fund is an exchange traded fund (ETF) that aims to track the performance of the S&P Commodity Producers Oil & Gas Exploration & Production Index as closely as possible. The ETF invests in physical index securities. The S&P Commodity Producers Oil & Gas Exploration & Production Index offers exposure to the largest publicly-traded companies involved in the exploration and production of oil and gas from around the world. The index is free float market capitalisation weighted. iShares ETFs are funds managed by BlackRock. They are transparent, cost-efficient, liquid vehicles that trade on stock exchanges like normal securities. iShares ETFs offer flexible and easy access to a wide range of markets and asset classes.