Biogen Inc. (BIIB)

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Hedge Fund Popularity

13F filing is ongoing

Hedge Fund Holdings
Filing Period:
Last update:
No. Hedge Fund Shares Value Activity % Port
1.
D E Shaw

D. E. Shaw

1,585,572 $216,969,673 -2% 0.19%
2. 1,368,842 $187,257,678 +154% 0.19%
3. 998,400 $136,621,056 +319% 0.03%
4. 804,506 $110,088,601 -33% 0.17%
5. 786,219 $107,586,208 +1616% 0.18%
Insider Trading: Purchases See All
Insider Price Amount Relationship Remaining Holdings Date Form 4
$122.72 1,235 Director 27,842 2025-05-02 Filing
$222.54 455 Director 20,629 2024-02-15 Filing
$267.00 898 Director 2,943 2021-02-09 Filing
$241.31 3,100 Officer, Director 34,810 2020-11-30 Filing
$231.24 38,000 Director 643,000 2019-05-02 Filing
Insider Trading: Sales See All
Insider Price Amount Relationship Remaining Holdings Date Form 4
$126.25 3,806 Officer 5,427 2025-05-19 Filing
$150.02 8,760 Director 11,318 2025-03-07 Filing
$157.21 110 Officer 5,426 2024-12-09 Filing
$204.22 431 Officer 5,316 2024-09-03 Filing
$213.09 93 Officer 4,886 2024-04-02 Filing
Institutional Investors' Holdings
Filing Period:
No. Name Shares Value % Port
1. 17,032,839 $2,330,773,689 0.04%
2. 15,943,259 $2,181,675,561 1.8%
3. 15,211,036 $2,081,478,238 0.04%
4. 7,396,910 $1,012,193,164 0.04%
5. 4,672,437 $639,376,280 0.12%
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