Invesco S&P 500 Equal Weight Materials ETF (RSPM US) – Portfolio Construction MethodologyThe underlying S&P 500 Equal Weight Materials Index offers equal-weight exposure to materials companies selected from the S&P 500 large-cap universe. Eligible constituents are U.S.-domiciled common stocks listed on major U.S. exchanges, classified in the materials sector under GICS, and already admitted to the S&P 500 by the index committee under float-adjusted market-cap, liquidity, free-float and earnings guidelines t ...