On February 19, Vanguard Group's Standard & Poor's 500 ETF surpassed State Street Global Advisors' SPDR S&P 500 Trust to become the world's largest exchange-traded fund. This shift occurred due to $2.8 billion outflows from SPY combined with $305 million inflows into the Vanguard fund on the same day. Accordingly, by the end of Tuesday, VOO led with assets totaling $632.2 billion, ahead of SPY's $630.4 billion, as per FactSet data.
State Street's ETF, established in 1993, retains its status as the oldest exchange-traded fund in the United States. However, BlackRock's iShares Core S&P 500 ETF emerges as a noteworthy competitor, with assets of $609.1 billion as of Tuesday, according to FactSet data.