By Chuck Mikolajczak
NEW YORK (Reuters) - The Nasdaq rose modestly in choppy trade on Thursday as Apple's shares rallied a day after the iPad maker's strong results, though tensions in Ukraine held back the broader market.
Caterpillar Inc
The three major U.S. stock indexes had opened sharply higher, with the Nasdaq initially climbing more than 1 percent before turning negative in the first half-hour of trading. Wall Street bounced off session lows with gains again concentrated in the Nasdaq, but stocks remained well off earlier highs.
Much of the volatility was driven by comments from Russian Defense Minister Sergei Shoigu, who said Russia started military drills near the border with Ukraine. In addition, Ukrainian forces killed up to five pro-Moscow rebels as they closed in on the separatists' military stronghold in the east.
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Shares of Apple Inc
The S&P information technology index rose 0.9 percent and was the best-performing sector of the day.
"The market is biased - from all of the good news we've heard on stocks recently - to go higher," said Kim Forrest, senior equity research analyst at Fort Pitt Capital Group in Pittsburgh.
"However, there are hot spots in the world that keep flaring up like a campfire that won't go out, and the market needs to deal with that."
Caterpillar Inc
Limiting the Dow's advance were Verizon Communications Inc
The Dow Jones industrial average fell 6.96 points or 0.04 percent, to 16,494.69. The S&P 500 gained 2.47 points or 0.13 percent, to 1,877.86. The Nasdaq Composite added 18.155 points or 0.44 percent, to 4,145.122.
Facebook Inc
Profits are seen rising 2.9 percent this quarter, down from the 6.5 percent growth rate estimated at the start of the year, but above the low of 0.6 percent seen last week, according to Thomson Reuters data.
Zimmer Holdings Inc
A number of cloud-computing stocks, which have struggled lately but rose last week, opened higher and then quickly sold off. Workday Inc
(Reporting by Chuck Mikolajczak; Editing by Jan Paschal)


