ECB update in focus on Wall Street By: CNBC.com News September 04, 2014 at 05:11 AM EDT U.S. stock index futures pointed to a flat to lower open on Wall Street on Thursday, ahead of a policy announcement from the European Central Bank. Read More >> Related Stocks: Hovnanian Enterprises Inc Hovnanian Entr Dep A Paymentus Holdings Inc Cl A Sentinelone Inc Cl A