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Here are Friday's top research calls, including upgrades for ConAgra Foods and Domino's Pizza, and downgrades for Ameriprise and Lear.
Tesaro is soaring, but the company is overvalued if regulators decide to grant marketing clearance for niraparib only in a smaller, more restricted population of ovarian cancer patients.
Takeover speculation that had fueled the recent rise in Clovis' stock price looks to be subsiding.
Chi-Med may be pressing ahead with a series of late-stage oncology drug trials, but it is anything but a one-trick pony biotech company.