$SCHM vs $SPMD: Weighing Two Low-Cost Mid-Cap ETFs Both SCHM and SPMD are low-cost passive ETFs providing exposure to U.S. mid-cap equities, with identical expense ratios of 0.03%. SCHM tracks the Dow Jones U.S. Mid-Cap Total Stock Market Index with approximately 499 holdings, offering slightly broader diversification than SPMD, which follows the S&P MidCap 400 Index with around 402 holdings. Sector allocations for both funds are concentrated in industrials, information technology, and financials, reflecting standard mid-cap blend characteristics with comparable risk profiles.