Many have pitched the Total Stock Market index as a superior alternative to the S&P 500. Let's check out how they differ. 
https://www.valuewalk.com/2020/02/sp-500-vs-total-stock-market-index/
SPDR S&P 500 (AMEX:SPY)
Historical Stock Chart
From Sep 2021 to Oct 2021 Click Here for more SPDR S&P 500 Charts.
SPDR S&P 500 (AMEX:SPY)
Historical Stock Chart
From Oct 2020 to Oct 2021 Click Here for more SPDR S&P 500 Charts.