RDIV competes in the high-dividend securities market through a revenue-weighted portfolio. The fund selects the 60 highest-yielding securities from the S&P 500 and S&P 400, and weights them by revenue. This approach sets the fund apart and produces a unique portfolio with big sector tilts. Still, with only about 60 holdings, the fund's biases can change quickly. The strategy produces a high portfolio yield, but some investors may be wary of the increased exposure to a smaller selection universe. The index is reconstituted and rebalanced quarterly. Prior to June 4, 2018, the funds underlying index was called OFI Revenue Weighted Ultra Dividend Index.