947 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, 315 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: 315 | Existing positions reduced: 388

37% less first-time investments, than exits

New positions opened: 83 | Existing positions closed: 132

Holders
947
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
326
$2.43M
327
$2.42M
328
$2.42M
329
$2.4M
330
$2.39M
331
$2.38M
332
$2.38M
333
$2.38M
334
$2.27M
335
$2.23M
336
$2.22M
337
$2.18M
338
$2.14M
339
$2.13M
340
$2.13M
341
$2.13M
342
$2.11M
343
$2.1M
344
$2.09M
345
$2.08M
346
$2.06M
347
$2.06M
348
$2.04M
349
$2.03M
350
$2M