By Benjamin Pimentel

Technology stocks slipped early Thursday, as shares of semiconductor and data storage companies retreated at the opening bell.

The Nasdaq Composite Index (RIXF) fell 14 points, or 0.6%, to 2,417, while the Philadelphia Semiconductor Index (SOX) sank even lower by 1.9%.

Major chip makers saw their shares decline, including Advanced Micro Devices Inc. (AMD), Texas Instruments Inc. (TXN) and SanDisk Corp. (SNDK).

Compellent Technologies (CML) also highlighted the day's losses, as its shares fell sharply by about 24% after the data storage company lowered its revenue outlook.

Canaccord Adams analyst Paul Mansky downgraded the company's stock to sell, citing the company's "dramatic reversal of fortunes."

"We view the company as very likely to undergo material revaluation as credibility and technological differentiation fall under heavy scrutiny," Mansky said in a note.

Shares of EMC Corp. (EMC), the giant in the data storage market, also were down 2%. Mansky of Canaccord Adams downgraded the stock to hold, citing concerns that "VMware sentiment may be peaking, and could suffer damage if the high-end server market fails to deliver on schedule."

Shares of Qlogic Corp. (QLGC) also lost 4%. Canaccord Adams also downgraded the stock to hold.

Shares of other major tech players declined, including Cisco Systems (CSCO), eBay Inc. (EBAY) and Hewlett-Packard (HPQ).

 
 
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