DOW JONES NEWSWIRES 

Cablevision Systems Corp. (CVC) swung to a first-quarter profit, helped by strong results at its telecommunications services business.

Shares jumped 7.2% premarket to $19.65 as the company's digital-video and broadband offerings are helping to offset a general slowdown in cable-television subscriber growth.

Cablevision said late last month it will launch a 101-megabits-per-second high-speed Internet service - more than twice as fast as rival Verizon's much-touted FiOS. The announcement suggested Internet service providers might be moving away from bundled packages to focus on bandwidth and speed, rapidly becoming more important to subscribers using the Internet.

The company, which also owns the New York Knicks and the New York Rangers, reported a profit of $20.2 million, or 7 cents a share, reversing a year-earlier loss of $31.6 million, or 11 cents a share, a year earlier. The loss on derivative contracts narrowed to $33.7 million from $106.3 million.

Revenue rose 11% to $1.9 billion.

Analysts polled by Thomson Reuters expected earnings of 15 cents a share on revenue of $1.9 billion.

At Cablevision's telecommunications business, by far the company's largest, revenue rose 5.3% and earnings jumped 14%, driven by broadband-subscriber growth and higher rates. In February, Chief Operating Officer Thomas Rutledge said cable-subscriber growth in the quarter to that point was ahead of last year's results.

In its Madison Square Garden business, which includes the sports teams, revenue rose 2.3%, as its operating loss narrowed sharply amid a prior-year write-down. The company's Rainbow unit - which includes cable channels such as AMC and IFC - posted an 11% revenue rise while operating income rose 40%. Cable networks have been a rare bright spin in the media industry as they are less advertising-dependent..

-By Mike Barris, Dow Jones Newswires; 201-938-5658; mike.barris@dowjones.com