By Rex Crum

The overall tech sector was in the red in afternoon trading Thursday, but McAfee Inc. surged by as much as 58%, as Intel Corp.'s surprise $7.7 billion deal to acquire the security-software company highlighted the sector's action.

Intel (INTC) shares fell more than 3%, to $18.92 after the world's No. 1 semiconductor company said it would pay $48 a share for McAfee (MFE) -- a 60% premium over McAfee's Wednesday closing price -- to acquire a company that Intel said would help boost the security of its mobile-wireless chip products, in particular.

"McAfee is the next step in this [mobility] strategy, and the right security partner for us," Intel Chief Executive Paul Otellini said, in a statement announcing the deal.

After the deal's completion, which still needs the approval of McAfee shareholders, the company will become a wholly owned subsidiary of Intel's Software and Services Group. .

McAfee rival Symantec Inc. (SYMC) benefitted from the deal, rising 46 cents a share, or 3.6%, to $13.05.

Other chip stocks fell along with Intel, as Advanced Micro Devices Inc. (AMD) was down 3.5% to $6.34 a share and Micron Technology Inc. (MU) gave up more than 4% to fall to $7.15.

Brocade Communications Systems (BRCD) shares fell 28 cents, or more than 5%, to $4.85. Late Wednesday, the storage-technology company turned in a fiscal third-quarter profit after reporting a loss a year ago. However, Brocade's fourth-quarter earnings and revenue outlooks fell short of analysts' expectations.

Other leading tech stocks were in the red, with declines from Apple Inc. (AAPL), Oracle Corp. (ORCL), Microsoft Corp. (MSFT) and Yahoo Inc. (YHOO).

The Nasdaq Composite Index (RIXF) fell more than 43 points, or 2%, to 2,172. The overall market was disappointed by the latest first-time filings for state unemployment benefits. The number of filers unexpectedly rose last week to 500,000, the highest level since last November.

Hewlett-Packard Co. (HPQ) fell 95 cents a share, or 2.3%, to $40.39 and Dell Inc. (DELL) was off by 13 cents a share to trade at $12.06. Both computer giants report quarterly results after the market close.

Google Inc. (GOOG) fell $12.19 a share to $470 on the sixth anniversary of the Internet search leader holding its IPO. When Google went public, it priced its stock at $85 a share in an initial offering of $1.67 billion.

 
 
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