Top 10 stocks now make up 38% of the S&P 500; 3 ETFs offer ways to diversify away from mega-cap concentration.

The S&P 500's top 10 companies now represent about 38% of the index, heavily concentrating investor exposure in a few mega-cap tech giants like Nvidia, Apple, and Microsoft. This concentration reduces diversification for investors relying solely on the S&P 500. Three ETFs provide alternatives: the Invesco S&P 500 Equal Weight ETF (RSP) balances all S&P 500 stocks equally, the Invesco S&P MidCap Quality ETF (XMHQ) targets financially strong mid-cap companies, and the Avantis U.S. Small Cap Value ETF (AVUV) focuses on undervalued small-cap stocks. These ETFs help investors diversify their U.S. equity exposure without abandoning large-cap stocks entirely, potentially improving risk management and return profiles.