Biosite

(BSTE)

posted first-quarter earnings of $13.8 million, or 76 cents a share, up from $8.9 million, or 55 cents a share, a year ago. Revenue for the quarter was $71.8 million. Analysts expected profits of 62 cents a share on revenue of $65.6 million. The stock was down $1.44, or 2.37%, to $59.36 in after-hours trading.

Smith Micro Software

(SMSI) - Get Report

reported a net loss of $128,000, or a penny a share, for the first quarter ended March 31, vs. a profit of $103,000, or a penny a share, a year ago. Revenue for the quarter was $2 million. Analysts expected a profit of 3 cents a share on revenue of $2.8 million. The stock was down 47 cents, or 12.8%, to $3.20 in after-hours trading.

Tessera Technologies

(TSRA)

had net income of $11.9 million, or 25 cents a share, for the first quarter ended March 31, up from $4.1 million, or 9 cents a share, a year ago. Revenue for the quarter was $27.9 million. Looking forward, the company expects revenue in the range of $16.5 million to $17 million for the second quarter. The company also expects revenue of $89 million to $91 million for 2005. Analysts were expecting second-quarter revenue of $21 million and revenue of $135 million for 2005. The stock was down $11.40, or 27.98%, to $29.35 in after-hours trading.

Vitesse Semiconductor

(VTSS)

said it lost $28.9 million, or 13 cents a share, for the second quarter ended March 31, vs. a loss of $17.5 million, or 8 cents a share a year ago. Revenue for the quarter was $47.2 million. Vitesse's non-GAAP loss for the second quarter was $9.4 million, or 4 cents a share. Analysts expected a loss of 3 cents a share on revenue of $46.9 million. The stock was down 6 cents, or 2.54%, to $2.30 in after-hours trading.

Emulex

(ELX)

posted a third-quarter profit of $17.78 million, or 20 cents a share, vs. $14.3 million, or 16 cents a share, a year ago. Excluding items, the company earned 25 cents a share. Revenue for the quarter was $102.6 million. Analysts expected earnings of 23 cents a share on revenue of $101 million. Looking to the fourth quarter, the company expects revenue in the range of $103 million to $108 million with non-GAAP earnings of 24 cents to 25 cents a share, which is above Wall Street's forecast of $102.42 million in revenue and 23 cents a share profit. The stock was up 24 cents, or 1.39%, to $17.50 in after-hours trading.

Harmonic Lightwaves

(HLIT) - Get Report

said it earned $1.7 million, or 2 cents a share, for the first quarter ended April 1, compared with a loss of $2.6 million, or 4 cents a share, a year ago. Revenue for the quarter was $73 million. Excluding items, the company earned $3.4 million, or 5 cents a share. Analysts expected earnings of 9 cents a share on revenue of $72.5 million. For the second quarter, the company expects to earn 5 cents to 7 cents, before items, on revenue of $73 million to $77 million. Analysts expected earnings of 10 cents a share on revenue of $762 million, according to Thomson First Call. The stock was down $2.06, or 20.79%, to $7.85 in after-hours trading.