ETF Flows Report for 08/21/2018 By: ETF Channel August 21, 2018 at 10:52 AM EDT . orttr { font-family: Arial; font-size: 12pt; font-weight: bold; height: 24px; } . Read More >> Related Stocks: S&P 500 Ishares Core ETF S&P Depository Receipts S&P Midcap 400 Ishares Core ETF