Discover why RSP and SPY can produce different returns even though both invest in S&P 500 companies. This guide explains how market-cap weighting can benefit SPY when mega-cap stocks lead, while RSP may become more competitive when gains spread across the broader market. Compare long-term performance, market conditions, diversification, volatility, and weighting methods to better unde... https://financenovels.com/blog/rsp-vs-spy/