Calvert US Mid-Cap Core Responsible Index ETF (CVMC) is a ETF from Calvert and State Street SPDR S&P 500 ETF Trust (SPY) is a ETF from State Street Investment Management. Over the past year CVMC returned +27.88% while SPY returned +23.56%. Year to date, CVMC is up 21.02% versus a gain of 13.50% for SPY.

Over three years, CVMC compounded at +16.36% per year against +21.17% for SPY. Across the full 4-year window we track, CVMC has the edge at +13.80% annualized vs +8.85%. Past performance does not guarantee future results.

CVMC has been the more volatile fund, with annualized monthly volatility of 15.6% compared with 15.3% for SPY. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.

The deepest peak-to-trough decline in our data was -22.5% for CVMC and -56.5% for SPY. Drawdown depth is worth weighing if you expect to sell during market stress rather than ride it out.

The two funds' monthly returns correlate at 0.84. They usually move together, but the gap leaves some room for diversification.

CVMC charges 0.15% per year while SPY charges 0.09%. On a $10,000 position that is $15 vs $9 annually, a gap of $6 per year that compounds over a long holding period. On income, CVMC currently yields 1.35% against 1.01% for SPY.