Buy 2 Vanguard index funds to beat the S&P 500 in the next 5 years, according to Wall Street analysts

State Street Investment Management forecasts the S&P 500 will return 39% over the next five years, while the S&P Mid-Cap 400 and S&P Small-Cap 600 are expected to return 41% and 42%, respectively. Investors are advised to consider the Vanguard S&P Mid-Cap 400 ETF and the Vanguard S&P Small-Cap 600 ETF for exposure to these indexes. However, concerns are raised about the long-term performance of mid-cap and small-cap funds compared to the S&P 500, which is seen as a more stable investment due to its rebalancing and focus on top-performing stocks.