Monday's Late Winners & Losers

Sun Microsystems (SUNW Quote) charged upwards amid generally mixed after-hours trading Monday, after the computer-systems maker swung to a higher-than-expected profit.

The Santa Clara, Calif., company posted non-GAAP earnings of $338 million, or 9 cents a share, compared with a 2-cent loss per share last year. Analysts polled by Thomson Financial were seeking earnings of just a nickel a share. Sun stock soared 10% to $5.38.

Powerwave Technologies (PWAV Quote) was also trading up after the wireless-equipment maker said it lost an adjusted 16 cents share in the second quarter to square with the average Street target. The Santa Ana, Calif., company also posted a top line of $185.6 million, which tops the $174.9 million estimated by analysts. Shares were adding 20 cents, or 3.1%, to $6.65.

OSI Pharmaceuticals (OSIP Quote), reversed a year-ago loss with second-quarter continuing-operations income of 48 cents a share, and real-estate-services firm CB Richard Ellis Group (CBG Quote) nearly doubled its per-share income from last year to 66 cents a share, excluding items. The consensus had called for just 41 cents a share.

OSI, based in Melville, N.Y., lost 29 cents to $31.12. CB Ellis, of El Segundo, Calif., jumped 8.1% to $38.25.

On the other hand, Optium (OPTM Quote) shares took a nosedive after the optical-subsystems maker said it will probably post a loss in the fiscal fourth quarter on sales ranging between $26 million and $26.5 million. Analysts are looking for a dime-a-share profit on $35.9 million in revenue. Shares plummeted more than 27% to $9.45.