Tuesday's Late Winners & Losers

The tech sector ramped up postbell issuance of first-quarter results again on Tuesday, propelling a large chunk of the major late movers.

Novatel Wireless (NVTL Quote) was one of the winners in that regard, climbing 4.2% to $19.50 after swinging to a first-quarter profit and raking in sales of $109.8 million. That revenue figure is 173.5% higher than last year and about $11.5 million more than analysts' had been expecting, according to Thomson Financial.

California's United Online (UNTD Quote) was another big tech gainer after coming in above two analysts' estimates for first-quarter income and sales. It also offered higher revenue targets for the second quarter and all of 2007. Shares of United, which operates Internet-service providers NetZero and Juno, jumped 6.3% to $15.35 in recent extended trading.

Business-software firm Navteq (NVT Quote), based in Chicago, rose 3.4% to $37.05 after scorching past analysts' first-quarter targets. Atmel (ATML Quote), a San Jose, Calif., semiconductor company, said first-quarter sales came to $391.3 million, which edges out Street targets. Shares added 1.9% at $5.41.

Elsewhere, PC Mall (MALL Quote) surged 19% to $12.40 after the small-cap computer-parts retailer swung to a first-quarter profit of 14 cents a share from a small year-ago loss. General Cable (BGC Quote) of Kentucky, which makes fiber-optic wire and cable products, posted $1.01 per-share earnings (excluding items), vs. Wall Street's 76-cent average call. Shares were up 5.1% to $60.46.