Is Now a Better Time to Invest in the S&P 500 or Entire Stock Market?

The article compares two Vanguard ETFs for diversified investing: VOO (S&P 500 ETF with 505 large-cap stocks, 39.2% tech-concentrated) and VTI (Total Stock Market ETF with 3,484 stocks including small and mid-caps). The author recommends VOO over VTI in the current environment, citing expectations that large-cap stocks will outperform smaller companies due to rising interest rates and economic expansion, which disadvantage smaller companies that rely heavily on debt.