This is only true for small amounts of money.
Instead of using a single ETF or Index Fund to invest in
U.S. stocks, Wealthfront's Tax-Optimized Direct Indexing
directly purchases up to 1,001 individual securities on
your behalf — up to 1,000 stocks from the S&P 500® and S&P
1500® Indices and an ETF of much smaller companies.
From Wealthfront's website:
https://blog.wealthfront.com/introducing-direct-indexing/Analysis from bogleheads: https://www.bogleheads.org/forum/viewtopic.php?t=152903
Re:Why the Dow is a useless market index
by tanderson92 on Monday April 10, 2017 @01:13PM
(#14080485)
Thanks, good point.
loeg points this out. Wealthfront doesn't do this either.