Twitter (TWTR) names a new CEO and it's a company veteran. Founder and former CEO Jack Dorsey has been named permanent CEO. Dorsey will also continue to serve as CEO of Square, the payments company he co-founded in 2009, that has reportedly filed confidentially for an initial public offering. The number two executive at Twitter will be Adam Bain, who will serve as Chief Operating Officer. Dorsey took to-where else-Twitter to discuss his appointment as CEO in a series of tweets, which said the new team is focusing on a roadmap to make Twitter great. General Electric (GE) shares started the day higher on news that Nelson Peltz's Trian Fund is taking a $2.5 billion stake in the company. Peltz calls the investment 'supporitve of current management'. Disney (DIS) is considering demand pricing for its theme parks. Tickets would cost less on slower days and cost more on high volume days.