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Tuesday's Late Winners & Losers

Amazon beat expectations, but profit-takers ruled late trading Tuesday.


(AMZN) - Get Report

led a postbell tech melee Tuesday, as

profit-takers emerged in droves despite better-than-expected earnings at the online retailer.

Seattle-based Amazon's third-quarter profit nearly quadrupled year-over-year to 19 cents a share, or $80 million. The company posted revenue of $3.26 billion, a 41.4% gain. Wall Street was seeking 18 cents a share on $3.14 billion in sales. Still, shares slid $10.60, or 10.5%, to $90.22.

Similarly, chipmaker

RF Micro Devices


slid 6.1% to $6.78, even though it topped earnings and revenue targets for the fiscal second quarter. The Greensboro, N.C., company also

warned that its manufacturing operations are having trouble keeping up with strong demand, which is eating into profit margins in the current quarter.

Riverbed Technology


dipped 22.1%,

one of the biggest price drops after-hours, even though earnings met expectations and revenue was above par.


was off 10.9% after non-GAAP third-quarter earnings

slid 15.6% to an in-line 27 cents a share.

Fellow chipmaker


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(ALTR) - Get Report

projected next-quarter sales to be

flat to down 4% sequentially, and information-technology firm



pegged fourth-quarter revenue at $197 million to $200 million. That's at least $7.2 million under consensus.

Both firms posted better-than-expected third-quarter profits, but Altera shares were still down 12.1% to $20.50 and Savvis was sinking 12.7% to $36.05.

Out of the tech sector,


(ILMN) - Get Report

said non-GAAP third-quarter earnings fell 12.8% to 34 cents a share. Although that's 15 cents higher than the Street's per-share estimates, shares of the San Diego biotech company shed 5.8% to $58.79.

On the other hand,



climbed 4.3% to $14.06, after beating analysts' fiscal second-quarter expectations with non-GAAP income of $32.5 million, or 22 cents a share, on sales of $140.3 million. The Street was expecting 19 cents a share on revenue of $139.4 million.

And drugmaker



, of Frazer, Pa., said its late-phase study of cancer drug Treanda met the primary endpoints for overall response rate and median duration of response. The drug is proposed for patients with indolent (or slow-growing) non-Hodgkin's lymphoma whose cancer is no longer responsive to treatment with rituximab.

Cephalon also said that Treanda exhibited a "manageable tolerability profile." Shares were rising $1.92, or 2.7%, to $73.