Cablevision's stock price rose more than 3 percent Friday on news that chairman Charles Dolan plans to personally take over the remaining pieces of the company's struggling Voom satellite TV service as a private business.

But announcement of the plan late Thursday left many unanswered questions that could dramatically affect Cablevision Systems Corp., its founding chairman and its chief executive James Dolan, who split with his father Charles over Voom. Story Continues ...