The fund invests in gold producers from North America. The fund considers companies identified by the FactSet Revere Business Industry Classification System (RBICS) to belong to the gold mining sector or industry. These companies should be listed in the US or Canada and must meet minimum market-cap and liquidity requirements. The security types could be Common Stocks, American Depositary Receipts, or Global Depositary Receipts. The fund selects the top 20 companies by market capitalization. Requirements may be relaxed until the minimum number of 12 is met. The fund is weighted by market cap, limiting single securities to 10% with the excess weights distributed proportionately among uncapped securities. The index is reconstituted and rebalanced semi-annually.