ETF Flows Report for 12/20/2017 By: ETF Channel December 20, 2017 at 10:48 AM EST . orttr { font-family: Arial; font-size: 12pt; font-weight: bold; height: 24px; } . Read More >> Related Stocks: Dow Industrials SPDR Mid Cap SPDR 400 Trust, Series 1 SPDR S&P 500 ETF Trust