“While the Agg is often viewed as representing ‘the U.S. bond market,’ it in fact captures just 52% of the U.S. public bond market. Compare that with equity indices like the S&P 500, which covers 81% of the U.S. public equity market — or better yet, the CRSP U.S. Total Market Index, which covers 96%.”
Read the full article at JPMorgan.