ETF Flows Report for 05/18/2018 By: ETF Channel May 18, 2018 at 10:46 AM EDT . orttr { font-family: Arial; font-size: 12pt; font-weight: bold; height: 24px; } . Read More >> Related Stocks: Mid Cap SPDR 400 Trust, Series 1 Russell 2000 Ishares ETF SPDR S&P 500 ETF Trust