Biogen Inc.'s hemophilia business will begin trading on its own as Bioverativ, with the ticker BIVV, starting Thursday. Biogen previously announced the spin-off in May of 2016, and said it would allow Biogen to focus on its neurological treatments. Biogen shares rose 0.8% in pre-market trade Wednesday. Company shares have sunk 1.9% over the last three months, compared with a 7.9% rise in the S&P 500 .
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