Biogen Idec shares owned by Citadel Advisors
Quarter-by-quarter ownership of Biogen Idec (BIIB) shares owned by Citadel Advisors
from 13F filings
Historical chart of Citadel Advisors investment in Biogen Idec
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Quarterly reported holdings in Biogen Idec by Citadel Advisors
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2013-03-31 | $28M | 146k | 192.91 |
| 2012-12-31 | $16M | 110k | 146.67 |
| 2012-09-30 | $4.0M | 27k | 149.22 |
| 2012-06-30 | $1.7M | 12k | 144.34 |
| 2012-03-31 | $5.7M | 45k | 125.98 |
| 2011-12-31 | $1.8M | 17k | 110.02 |
| 2011-09-30 | $17M | 177k | 93.15 |
| 2011-06-30 | $12M | 116k | 106.92 |
| 2011-03-31 | $74k | 1.0k | 73.56 |
| 2010-12-31 | $1.9M | 29k | 67.06 |