Wall Street under pressure on last day of February By: CNBC.com News February 29, 2016 at 05:56 AM EST U.S. stock index futures pointed to a lower open on Monday as China stocks tumbled, ahead of a packed week of economic data. Read More >> Related Stocks: Dow Industrials SPDR PowerShares QQQ S&P 500 Ishares Core ETF SPDR S&P 500 ETF Trust Sentinelone Inc Cl A