TIAA-CREF and MassMutual Retirement Services won the top overall fund awards in the Lipper US Fund Awards 2015.

The full list of group award winners includes TIAA-CREF, Best Fund Group Overall—Large; MassMutual Retirement Services, Best Fund Group Overall—Small; Oakmark Family of Funds, Best Equity Fund Group—Large; Hotchkis & Wiley Capital Management LLC, Best Equity Fund Group—Small; Lord Abbett & Company, Best Fixed Income Fund Group—Large; Guggenheim Investments, Best Fixed Income Fund Group—Small; American Funds, Best Mixed Assets Group—Large; and Thrivent Asset Management LLC, Best Mixed Assets Group—Small.

Lipper designates award-winning funds in most individual classifications for three-, five- and 10-year periods and fund families with high average scores for the three-year time period. The top three-year classification winners and fund family winners receive trophies at the ceremonies. This year’s ceremony was held March 31 in New York.

Lipper data covers more than 285,000 share classes and over 129,000 funds in 62 markets. The Lipper Fund Awards are part of the Thomson Reuters Awards for Excellence.