Shares of Twitter Inc. were up 2% in premarket trade Monday after hedge fund Jana Partners disclosed a new 2.9 million share stake in the social media platform. Additionally, President-elect Donald Trumphad praised Twitter as "a great form of communication," as well as other social media platforms, in a 60 Minutes interview Sunday. Shares of Twitter have gained 10% in the past month, compared to the S&P 500's gain of 1.5%.
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