DON focuses on exclusively dividend-paying US mid-caps. The fund selects from the top 75% of its Parent Index WisdomTree Dividend Index after removing the 300 companies with the largest market capitalization, leaving only mid-caps as WisdomTree defines them. Rebalanced annually, DON weights its holdings by the proportionate share of total cash dividends that each component company is projected to pay. As a result, DON weights holdings differently between sectors, and with greater variety.