Biogen Idec Inc. (BIIB) gapped open sharply lower Wednesday, following a downgrade by Citigroup to "Neutral" from "Buy." The stock has since moved in a narrow range.
Biogen Idec has dropped in the last 15 minutes on increased volume and is now down 10.82 at $212.21. The stock is testing the lower end of a week and a half long range.
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