US STOCKS-Futures point to flat open on weak earnings
* Indexes on track to break three-week streak of losses
* UPS shares fall after outlook, Starbucks up on results
* Oil falls, on track for another negative week
* Futures down: Dow 7 pts, S&P 3 pts, Nasdaq 3 pts (Updates with UPS outlook)
By Ryan Vlastelica
NEW YORK, Jan 23 (Reuters) - U.S. stock index futures pointed to a flat open on Wall Street Friday, as early gains following a sharp rally in the previous session were offset by some weak corporate results.
Wall Street jumped more than 1 percent on Thursday, an advance that returned the S&P 500 and Nasdaq to positive territory for the year and set the key indexes on track to break a three-week streak of declines. The move came after the European Central Bank detailed a bigger-than-expected bond-buying program designed to boost the region's sagging economy and fight deflation.
With the ECB stimulus details known, U.S. corporate earnings will likely be the primary driver of trading over the next few weeks, and a number of bellwether names have disappointed, with revenue being a particular area of concern.
United Parcel Service Inc gave a fourth-quarter earnings outlook that was below expectations, citing a disappointing performance in U.S. domestic ground shipments. Shares slumped 8.4 percent to $104.65 in premarket trading. Continuación...