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Why Momenta Pharmaceuticals stock rose 69% higher today

What happened Shares of Momenta Pharmaceuticals (NASDAQ: MNTA) went up Wednesday after the biotechnology company announced it had agreed to be acquired by Johnson and Johnson (NYSE: JNJ). At 1:40 a.m. EDT, Momenta’s share was up 69%. So what The all-cash deal values ​​Momenta at $ 6.5 billion, or $ …

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