1,006 hedge funds and large institutions have $36.1B invested in Biogen in 2023 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 320 increasing their positions, 363 reducing their positions, and 84 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

less ownership

Funds ownership:

7% less call options, than puts

Call options by funds: $555M | Put options by funds: $599M

5% less funds holding in top 10

Funds holding in top 10: 1918 (-1)

12% less repeat investments, than reductions

Existing positions increased: 320 | Existing positions reduced: 363

Holders
1,006
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
18
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$555M
Puts
$599M
Net Calls
Net Calls Change

Top Buyers

1 +$1.01B
2 +$264M
3 +$181M
4
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$109M
5
JP Morgan Chase
JP Morgan Chase
New York
+$108M

Top Sellers

1 -$668M
2 -$286M
3 -$157M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$145M
5
Millennium Management
Millennium Management
New York
-$140M
Name Holding Trade Value Shares
Change
Change in
Stake
526
$733K
527
$728K
528
$719K
529
$712K
530
$712K
531
$704K
532
$698K
533
$697K
534
$696K
535
$696K
536
$688K
537
$687K
538
$684K
539
$682K
540
$679K
541
$678K
542
$678K
543
$676K
544
$669K
545
$659K
546
$657K
547
$655K
548
$655K
549
$643K
550
$639K