By Benjamin Pimentel, MarketWatch

SAN FRANCISCO (MarketWatch) -- The tech sector joined a broad market retreat on disappointing manufacturing data, with Amazon and Microsoft among the top decliners.

Amazon (AMZN) was down 3% after posting disappointing results last week. Microsoft (MSFT) was also down 2%, one of the worst performers on the Dow Jones Industrial Average(DJI) , which shed 122 points on news of a slower rate of expansion in U.S. manufacturing in January.

Shares of Yahoo (YHOO) were off 1.4%, while Hewlett-Packard (HPQ) was off 1%.

The Nasdaq Composite Index (RIXF) was down 1% at 4,062. The Morgan Stanley High Tech 35 Index (MSH) and the Philadelphia Semiconductor Index (SOX) were each off about 1%.

On the upside, shares of LinkedIn (LNKD) and Twitter (TWTR) rose ahead of the their quarterly reports later this week.

Twitter, which is scheduled to report for the first time since going public late last year, was up 1.7%. LinkedIn, which is set to report on Thursday, saw its stock rise 1.5%.

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