It can also withstand volatility because it is not focused on one industry. The S&P 500 has been widely touted by many experts as a good addition to retirement portfolios because it is broadly diversified across all sectors.
The index covers about 80% of the investable market capitalization of the U.S. The Fidelity 500 Index Fund tracks the S&P 500 index, one of the main benchmarks for U.S.
