Vanguard's Total Stock Market Index Fund (VITSX) has topped $1 trillion in assets, making it the world's single biggest equity fund.
Assets of the fund, which has both a mutual fund and an ETF share class, reached $1.035 trillion as of Nov. 30, according to Morningstar.
Dan Wiener, editor of The Independent Adviser for Vanguard investors, expects the $1 trillion will stick, though there may be "a few lumps along the way" because Vanguard's target date funds use the Total Stock Market Index Fund, which means "a constant inflow from retirement plans," said Wiener.
The fund included 3,590 stocks as of the end of October, providing investors exposure to the entire U.S. stock markets and making it "one of the best core U.S. stocks funds available," said Ben Johnson, Morningstar's director of global ETF research, in a Morningstar update.
"Broad diversification, rock-bottom fees and the back of a capable steward of fund shareholder capital in Vanguard set it up for continued success," added Johnson.