The fund invests in and hold the constituent securities of an index that includes stocks of 21 largest banks in the US. Stocks are selected by market capitalization and weighted based on their indicative annual dividend yields. The seven highest dividend yielding US bank stocks each receive a 7.14% weight. The next seven stocks with the highest dividend yield receive each receive a 4.76% weight and the seven lowest dividend yielding stocks each receive a 2.38% weight. The index is rebalanced every quarter.