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Biogen
BIIB

Overview Fund Activity

850 hedge funds and large institutions have $16.2B invested in Biogen in 2025 Q2 according to their latest regulatory filings, with 94 funds opening new positions, 337 increasing their positions, 260 reducing their positions, and 99 closing their positions.

Holders
850
Holders Change
-18
Holders Change %
-2.07%
% of All Funds
11.41%
Holding in Top 10
5
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+150%
% of All Funds
0.07%
New
94
Increased
337
Reduced
260
Closed
99
Calls
$381M
Puts
$333M
Net Calls
+$47.6M
Net Calls Change
+$323M

Top Buyers

1
Point72 Asset Management
1
Point72 Asset Management
Connecticut
$481M
2
Alyeska Investment Group
2
Alyeska Investment Group
Illinois
$63.9M
3
Arrowstreet Capital
3
Arrowstreet Capital
Massachusetts
$78.4M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$210M
5
A
5
AustralianSuper
Australia
$92.9M

Top Sellers

1
BlackRock
1
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
3
Amundi
France
$77.2M
4
SG Americas Securities
4
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
RPA
576
Rock Point Advisors
Vermont
$231K – – –
AFG
577
Atomi Financial Group
New York
$226K +$226K +1,800 New
PL
578
Perpetual Ltd
Australia
$226K – – –
VFA
579
Valeo Financial Advisors
Indiana
$225K +$225K +1,794 New
CFG
580
Citizens Financial Group
Rhode Island
$225K +$225K +1,791 New
CPA
581
Capital Performance Advisors
California
$223K +$35.7K +284 +19%
HW
582
Hancock Whitney
Mississippi
$221K +$10.2K +81 +5%
ASN
583
Advisory Services Network
Georgia
$221K -$44K -344 -17%
IHL
584
Investment House LLC
California
$217K -$187K -1,489 -46%
MPM
585
MBB Public Markets
Illinois
$217K -$52.9K -421 -20%
SCP
586
Sivia Capital Partners
California
$216K +$216K +1,717 New
CA
587
Clearstead Advisors
Ohio
$211K +$61.5K +490 +41%
AssetMark Inc
588
AssetMark Inc
California
$211K +$199K +1,586 +1,669%
TAM
589
Trust Asset Management
Texas
$210K – – –
CL
590
Choreo LLC
Illinois
$210K +$210K +1,671 New
KCM
591
Kathmere Capital Management
Pennsylvania
$209K +$209K +1,663 New
SLI
592
Sumitomo Life Insurance
Japan
$208K -$6.91K -55 -3%
EI
593
Ellevest Inc
New York
$207K +$207K +1,651 New
SI
594
Sava Infond
Slovenia
$207K – – –
PFBT
595
Parkside Financial Bank & Trust
Missouri
$207K +$27.1K +216 +15%
VCA
596
Verdence Capital Advisors
Maryland
$204K +$377 +3 +0.2%
KIG
597
Kennedy Investment Group
New Jersey
$203K -$7.28K -58 -3%
PL
598
Plancorp LLC
Missouri
$202K +$2.51K +20 +1%
LF
599
Lighthouse Financial
Florida
$201K – – –
QT
600
Quantbot Technologies
New York
$201K -$1.57M -12,540 -89%
22 23
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