948 hedge funds and large institutions have $25.8B invested in Biogen in 2022 Q1 according to their latest regulatory filings, with 83 funds opening new positions, 316 increasing their positions, 388 reducing their positions, and 132 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

less ownership

Funds ownership:

less call options, than puts

Call options by funds: $ | Put options by funds: $

less funds holding

Funds holding:

12% less capital invested

Capital invested by funds: $29.5B → $25.8B (-$3.68B)

19% less repeat investments, than reductions

Existing positions increased: 316 | Existing positions reduced: 388

37% less first-time investments, than exits

New positions opened: 83 | Existing positions closed: 132

Holders
948
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
12
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$789M
Puts
$798M
Net Calls
Net Calls Change

Top Buyers

1 +$153M
2 +$135M
3 +$128M
4
BlackRock
BlackRock
New York
+$84.1M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$83.6M

Top Sellers

1 -$497M
2 -$109M
3 -$106M
4
Ameriprise
Ameriprise
Minnesota
-$106M
5
Amundi
Amundi
France
-$96.6M
Name Holding Trade Value Shares
Change
Change in
Stake
401
$1.23M
402
$1.22M
403
$1.21M
404
$1.2M
405
$1.2M
406
$1.19M
407
$1.19M
408
$1.15M
409
$1.14M
410
$1.13M
411
$1.13M
412
$1.12M
413
$1.12M
414
$1.12M
415
$1.11M
416
$1.1M
417
$1.1M
418
$1.08M
419
$1.07M
420
$1.07M
421
$1.06M
422
$1.06M
423
$1.06M
424
$1.05M
425
$1.05M