Weak Chinese PMI data knocks US futures By: CNBC.com News June 01, 2016 at 06:15 AM EDT U.S. stock-index futures declined on Wednesday, as global stock markets headed lower after disappointing manufacturing data from China. Read More >> Related Stocks: Dow Industrials SPDR Michael Kors Holdings PowerShares QQQ S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust Sentinelone Inc Cl A