U.S. stock index futures signal dip; TI eyed
April 19, 2011 at 03:49 AM EDT
* U.S. stock index futures pointed to a slightly lower open on Wall Street on Tuesday, with futures for the S&P 500 down 0.1 percent, Dow Jones futures down 0.1 percent and Nasdaq 100 futures down 0.1 percent at 0733 GMT.