US stocks set for a weak open as earnings flood in; yields in focus By: CNBC.com News April 23, 2018 at 05:27 AM EDT U.S. stock index futures ticked lower ahead of Monday’s open, as investors awaited a new cluster of corporate earnings. Read More >> Related Stocks: Dow Industrials SPDR PowerShares QQQ S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust