Biogen Inc. (BIIB)

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Hedge Fund Holdings
Filing Period:
Last update:
No. Hedge Fund Shares Value Activity % Port
1.
RA Capital Management

Peter Kolchinsky

982,139 $227,679,463 +33% 3.01%
2.
OrbiMed Advisors

Samuel Isaly

900,900 $208,846,638 4.12%
3. 643,000 $149,060,260 25.16%
4. 618,106 $143,289,333 -31% 0.24%
5. 401,005 $92,960,979 +141% 0.53%