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GMO U.S. Small Cap Value Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock

 GMO TRUST


Amended and Restated Supplement dated March 25, 2020 to the
GMO Trust Prospectus, dated June 30, 2019, as supplemented


This supplement amends and restates all prior supplements to the GMO Trust Prospectus, dated June 30, 2019 (the “Prospectus”).


GMO U.S. Small Cap Value Fund


Effective April 1, 2020, the section appearing on page 62 of the Prospectus captioned “Investment objective” is replaced in its entirety with the following:

Risk/Return [Heading] rr_RiskReturnHeading GMO U.S. Small Cap Value Fund
Objective [Heading] rr_ObjectiveHeading Investment objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Total return in excess of its benchmark, the S&P SmallCap 600 Value Index.