ESG follows an index designed to provide exposure to US-listed companies that exhibit several specific environmental, social, and corporate governance attributes. These factors include low emissions, percentage of independent board members, percentage of women board members, policies against child labor, and non-use of golden parachute agreements. Disqualifying characteristics include non-adherence to UN Global compact principles, involvement in controversial weapons, or coal mining. All qualifying constituents are weighted based on an aggregated ESG score derived from the factors mentioned above. Constituents are reconstituted quarterly, subject to a 5% cap. Prior to June 1, 2021, the fund was named FlexShares STOXX US ESG Impact Index Fund and tracked the STOXX USA ESG Impact Index.