963 hedge funds and large institutions have $32.1B invested in Biogen in 2023 Q3 according to their latest regulatory filings, with 91 funds opening new positions, 334 increasing their positions, 344 reducing their positions, and 118 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

11% less capital invested

Capital invested by funds: $36.1B → $32.1B (-$3.96B)

17% less funds holding in top 10

Funds holding in top 10: 1815 (-3)

23% less first-time investments, than exits

New positions opened: 91 | Existing positions closed: 118

Holders
963
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
15
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$575M
Puts
$517M
Net Calls
Net Calls Change

Top Buyers

1 +$363M
2 +$138M
3 +$80.3M
4
VanEck Associates
VanEck Associates
New York
+$62.6M
5
Macquarie Group
Macquarie Group
Australia
+$55.6M

Top Sellers

1 -$342M
2 -$172M
3 -$154M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$152M
5
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$91.2M
Name Holding Trade Value Shares
Change
Change in
Stake
501
$630K
502
$628K
503
$627K
504
$625K
505
$621K
506
$620K
507
$617K
508
$617K
509
$616K
510
$613K
511
$611K
512
$609K
513
$609K
514
$602K
515
$599K
516
$596K
517
$591K
518
$591K
519
$583K
520
$581K
521
$569K
522
$568K
523
$567K
524
$561K
525
$559K