By Benjamin Pimentel, MarketWatch

SAN FRANCISCO (MarketWatch) -- The tech sector was in the red again early Friday, weighed down by falling shares of Yahoo and Twitter.

Yahoo (YHOO) was down 1.4% in early trades, while Twitter (TWTR) gave up 2.4%, setting the pace for a retreat that saw the Nasdaq Composite Index (RIXF) slip 0.8% to 4,022. The benchmark was on track to end the week down more than 2%.

The Morgan Stanley High Tech 35 Index(MSH) and the Philadelphia Semiconductor Index (SOX) were each off a fraction.

Other major tech issues also posted losses. Apple Inc.(AAPL) was down 1%, while Netflix Inc. (NFLX) dropped 3% and Amazon.com (AMZN) was behind 2%.

On the upside, shares of Zynga Inc. (ZNGA) were up a fraction. The social gaming company got a boost from Sterne Agee analyst Arvind Bhatia who told clients in a note, "We see potential for Zynga to report bookings at or above the upper end of management's first quarter guidance and think the stock could react positively."

He also pointed signs of "a sequential increase in overall traffic for Zynga in the first quarter of 2014 versus the fourth quarter of 2013 -- a first in seven quarters."

Also up were shares of Yelp (YELP) and Cisco Systems.(CSCO)

More news from MarketWatch:

Zynga names David Lee new CFO

Amazon agrees to buy digital comics firm comiXology

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