* FedEx and Oracle fall after results, Adobe higher * Futures up: Dow 22 pts, S&P 2.9 pts, Nasdaq 7.5 pts (Adds FedEx results) NEW YORK, March 19 (Reuters) – U.S. stock index futures pointed to a slightly higher open on Wednesday, putting major indexes on track for a third day of gains, as investors looked ahead to comments from Federal Reserve Chair Janet Yellen. * The S&P 500 looked to open …
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