Marvell Technology Group's ( MRVL) shares were gaining ground in the extended session Thursday after the company posted first-quarter results that were stronger than analysts were expecting. Revenue for the quarter jumped 70% to $168.3 million from $98.8 million for the same period a year ago. The top line climbed 12% sequentially. Net income totaled $4.4 million, or 3 cents a share, reversing a loss of $30.9 million, or 26 cents a share, for the year-ago first quarter. Excluding various items and expenses, the company would have earned $24.5 million, or 19 cents a share, in the latest quarter. On that basis, the company topped estimates, which called for the company to earn 17 cents, according to Thomson First Call. "Our 12% sequential growth in quarterly revenue was our 22nd consecutive quarter of revenue growth," the company said in a press release. "Marvell's revenue growth is being driven by the continued adoption of Gigabit Ethernet and our integrated system-on-chip storage solutions." The company said bookings were strong during the quarter and that it's entering the second quarter with strong momentum. After the close of regular trading, shares of Marvell were gaining $1.97, or 7.1%, to $29.55 on Instinet.