Vanguard’s VOO Tops $1T, Dethroning State Street’s $787B SPDR ETF
STT•Vanguard’s S&P 500 ETF saw a $1.7B inflow in the latest session, pushing its assets above $1T and surpassing State Street’s $787B SPDR S&P 500 ETF. VOO has attracted $69B YTD and over $100B in each of the past two years, intensifying pressure on State Street’s ETF market share.
1. Vanguard’s VOO Reaches $1 Trillion Assets
Vanguard’s ETF crossed the $1 trillion mark after a $1.7 billion inflow in the latest session, marking the first S&P 500–tracking fund to achieve this milestone. Since launching in 2010, VOO has recorded inflows every year and now stands as the world’s largest ETF by assets.
2. Competitive Implications for State Street
State Street’s SPDR S&P 500 ETF (SPY) holds $787 billion, now ranking second to VOO for the first time. This shift underscores growing competition in the U.S. ETF market and signals potential margin pressure for State Street’s flagship fund.
3. Inflow Trends and Market Dynamics
VOO has drawn more than $69 billion year-to-date—the most of any ETF—after exceeding $100 billion in inflows in each of the past two years. A strong buy-the-dip mentality among investors and anticipation of mega-IPOs have driven these persistent passive cash flows.




