Impax US Sustainable Economy Fund

the Morningstar Rating for funds, or “star rating,” is calculated for managed products (including mutual funds, variable annuity and variable life subaccounts, exchange-traded funds, closed-end funds, and separate accounts) with at least a three-year history. Exchange-traded funds and open-ended mutual funds are considered a single population for comparative purposes. It is calculated based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a managed product’s monthly excess performance, placing more emphasis on downward variations and rewarding consistent performance. The top 10% of products in each product category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars the next 22.5% receive 2 stars, and the bottom 10% receive 1 star. The Overall Morningstar Rating for a managed product is derived from a weighted average of the performance figures associated with its three-, five- and ten-year (if applicable) Morningstar Rating metrics. The weights are 100% three-year rating for 36-59 months of total returns, 60% five-year rating, 40% three-year rating for 60-119 months of total returns, and 50% ten-year rating, 30% five-year rating, 20% three-year rating for 120 or more months of total returns. While the ten-year overall rating formula seems to give the most weight to the ten-year period, the most recent three-year period actually has the greatest impact because it is included in all three rating periods.

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Lipper, Inc. – A Reuters Company, is a nationally recognized organization that ranks the performance of mutual funds within a universe of funds that have similar investment objectives. Rankings are historical and are based on total return with capital gains and dividends reinvested.

Lipper rankings are based on total returns (not including sales charges) for the periods indicated and compare total return performance with that of other funds in the category.