Friday's Tech Winners & Losers

Shares of Silicon Image(SIMG Quote) were among technology's losers Friday, plunging 22% after the chipmaker posted disappointing fourth-quarter earnings and projected first-quarter revenue below Wall Street's forecast.

The company earned $26.3 million, or 29 cents a share, for the fourth quarter. Excluding certain items, earnings were $18.3 million, or 21 cents a share, 3 cents below Thomson First Call's average analyst forecast. Revenue totaled $87 million, above Wall Street's estimate of $76.8 million. During the year-earlier quarter, the company earned $12.6 million, or 15 cents a share, on revenue of $61.4 million.

For the first quarter, Silicon Image sees revenue of $68 million to $72 million. Analysts, on average, project revenue of $73.2 million. Shares were trading down $2.76 to $9.41.

Broadcom(BRCM Quote) rose 4% after the chipmaker posted in-line fourth-quarter earnings and announced a $1 billion stock buyback plan. The company reported an adjusted profit of $184.9 million, or 31 cents a share, on revenue of $923.5 million. Analysts expected earnings of 31 cents a share and revenue of $910.5 million. During the year-earlier quarter, the company earned $196.8 million, or 34 cents a share, on revenue of $820.6 million.

Looking ahead, Broadcom predicted first-quarter revenue of $890 million to $900 million, compared with analysts' estimate of $899 million. As for the company's buyback plan, Broadcom said that it would buy stock over the next 12 to 18 months, beginning on Feb.12. Shares were trading up $1.23 to $34.90.