In the latest report on monthly flows, State Street has surpassed Vanguard with the help of its popular SPY ETF. SPY, also known as the SPDR S&P 500 ETF, has played a key role in attracting investors to State Street’s offerings. The strong performance of SPY has contributed to State Street’s success in gathering assets compared to its competitor Vanguard. This development highlights the importance of having a diverse range of ETF options to attract investors and stay competitive in the market.