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Why Summit Therapeutics Stock Tanked Today

An analyst's downbeat new take on Summit Therapeutics (SMMT -11.32%) pushed its stock downward on Hump Day. At the end of Wednesday, the shares had booked a loss of over 11% in price as investors absorbed the negative take. That was a far steeper fall than the 0.3% slide of the S&P 500 (^GSPC -0.27%) that trading session.Bearish on SummitWell before market open that day, Leerink Partners' Daina Graybosch initiated coverage on Summit stock. This wasn't a positive appraisal, as the analyst flagged it with an ...