Vanguard’s S&P 500 ETF, ticker VOO, just vacuumed up roughly $13 billion in a single week, continuing a streak that has made it the undisputed king of the US ETF market.
The numbers behind the dominance
VOO became the first ETF in history to cross $1 trillion in assets under management back in June 2026. Year-to-date inflows through mid-2026 are estimated between $75 billion and $110 billion, the highest among all US-listed ETFs by a wide margin. In late August alone, VOO pulled in approximately $11.4 billion over a five-day stretch.
Early September kept the momentum going, with multiple single-day inflows ranging from roughly $2.99 billion to $3.28 billion.
Why VOO is eating everyone’s lunch
