By Caroline Valetkevitch
NEW YORK (Reuters) - U.S. stocks ended slightly higher as data showed strength in the services sector and APPLE (AAPL.NQ)shares rose above $600 for the first time since 2012.
Limiting the day's gains, however, were concerns over an escalation of tensions between Ukraine and pro-Russia separatists. Ukrainian forces were ambushed by separatists, triggering heavy fighting on the outskirts of the rebel stronghold of Slaviansk, a day after a Ukrainian police station in Odessa was stormed.
The Institute for Supply Management said its services sector index rose in April, hitting the fastest pace in eight months and topping expectations. It was the latest report to offer some upbeat news on the economy, which was hit by an unusually harsh winter.
"We shook off a lot of the morning jitters, and the ISM services came out and showed pretty good growth, and that obviously brought back some buyers," said Ryan Detrick, senior technical strategist at Schaeffer's Investment Research in Cincinnati, Ohio.
Apple
The Dow Jones industrial average <.DJI> rose 17.66 points or 0.11 percent, to 16,530.55, the S&P 500 <.SPX> gained 3.52 points or 0.19 percent, to 1,884.66 and the Nasdaq Composite <.IXIC> added 14.158 points or 0.34 percent, to 4,138.055.
On the downside, shares of JPMorgan Chase
Shares of Fannie Mae and Freddie Mac gained after activist investor William Ackman recommended the shares of mortgage finance giants during the Sohn Investment Conference in New York. Fannie
Pfizer Inc
(Editing by Bernadette Baum and Nick Zieminski)