MIDE adds an ESG layer to the S&P mid-cap 400. It seeks to capture US mid-caps with high ESG scores within each GICS sector, while maintaining the sector weights of the S&P 400. MIDE screens out companies involved in tobacco, controversial weapons and thermal coal. Companies are also excluded if they fall in the bottom 5% of the United Nations Global Compact (UNGC) score ranking or in the bottom 25% of ESG scores within each GICS sector as rated by SAM. Inclusion of constituents flagged for risks involving controversial issues is subject for review by the Index Committee. The index is market cap-weighted and rebalances on an annual basis. On February 10, 2025, both the fund and its index dropped and replaced ESG name claims with Scored and Screened. The change has no effect on the funds strategy.