Tuesday's Late Winners & Losers

Amazon soars on a rise in earnings.
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After a day in the dirges Tuesday, bulls had the postclose edge in the wake of soaring tech stocks, including a red-hot

Amazon.com

(AMZN) - Get Report

.

Amazon shares vaulted 18.3% after the Web retailer

more than tripled

its second-quarter profit to $78 million, or 19 cents a share, on 34.9% higher revenue of $2.89 billion. Analysts polled by Thomson Financial were seeking 16 cents a share on sales of $2.81 billion. Shares of the Seattle company surged $12.65 to $81.90.

RF Micro Devices

(RFMD)

, a semiconductor firm based in Greensboro, N.C., jumped 5.7% to $6.85 after non-GAAP earnings, at 4 cents a share, topped second-quarter targets by a penny. Third-quarter earnings were also forecasted to

best targets

by at least 2 cents.

Anadigics

(ANAD)

, another semiconductor, beat by a penny after swinging to a pro-forma profit of a dime a share. California-based semiconductor-equipment maker

LAM Research

(LRCX) - Get Report

posted revenue of $678.5 million for the June quarter, or 29.1% more than last year, which

comes in past Wall Street views

.

New Jersey-based Anadigics traded up 6.1% to $14; LAM Research was adding $1, or $1.8%, to $58.

Out of the tech sector, insurer

Chubb

(CB) - Get Report

, of Warren, N.J., said second-quarter operating income leapt 18.5% to $1.60 a share to sprint past the $1.39 mean Street estimate. Shares gained 2.8% to $51. Meanwhile,

Ezcorp

(EZPW) - Get Report

added 3% on word of a penny EPS beat for the fiscal third quarter.

Footwear maker

Sketchers USA

(SKX) - Get Report

, however, took a postbell free fall after the California-based company said second-quarter income slid to $14.9 million, or 32 cents a share, vs. 40 cents a share a year ago. Analysts were seeking 11 cents more. Shares were sliding $4.99, or 17.6%, to $23.34.

And

NutriSystem

(NTRI) - Get Report

lost 14.9% after the Horsham, Pa., weight-management company

predicted

per-share earnings of between 77 cents and 82 cents. Wall Street is looking for 89 cents a share. Despite handily beating second-quarter expectations, shares were lately trading at $54.26.