The QQQ, SPY And DIA All Fell Today. Here's Why. By: Benzinga via Benzinga April 19, 2021 at 16:30 PM EDT U.S. indicestradedlower Monday amid weakness in tech stocks and potential profit-taking in financials. The Invesco QQQ ... Read More >> Related Stocks: Alexion Pharmaceuticals Apple Dow Industrials SPDR Illumina Inc Micron Technology NVIDIA Corp Nasdaq ETF Netflix SPDR S&P 500 ETF Trust Tesla, Inc.