SPDR ETFs Dominate Inflows Despite Market Decline The SPDR S&P 500 ETF Trust (SPY) saw a significant inflow of $3.87 billion, even as broader markets declined. Other major S&P 500 ETFs, such as iShares Core S&P 500 ETF and Vanguard S&P 500 ETF, also attracted funds. Meanwhile, the Invesco QQQ Trust experienced the largest outflows, shedding $1.63 billion.12