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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 %
C
626
Covestor
United Kingdom
$108K +$27.3K +217 +34%
EB
627
Eastern Bank
Massachusetts
$108K – – –
TWC
628
TD Waterhouse Canada
Ontario, Canada
$106K -$197K -1,519 -65%
RBI
629
Raiffeisen Bank International
Austria
$105K -$95.2K -749 -48%
VCM
630
Versant Capital Management
Arizona
$104K +$57.6K +459 +124%
BP
631
BNP Paribas
France
$101K -$8.79K -70 -8%
CB
632
Centennial Bank
Arkansas
$100K – – –
MCM
633
MAI Capital Management
Ohio
$97.4K +$24.4K +194 +33%
PS
634
Principal Securities
Iowa
$88.4K +$46.1K +367 +109%
GWSG
635
GPS Wealth Strategies Group
Colorado
$87.3K -$3.77K -30 -4%
CSB
636
City State Bank
Iowa
$86.9K – – –
AC
637
AlphaCore Capital
California
$81.1K +$81.1K +646 New
GM
638
GeoWealth Management
Illinois
$80.8K +$80.8K +643 New
OIAM
639
OFI Invest Asset Management
France
$80.2K +$30.3K +283 +61%
HB
640
Horizon Bancorp
Indiana
$80K +$1.13K +9 +1%
JFA
641
JNBA Financial Advisors
Minnesota
$78.6K – – –
MPWT
642
MassMutual Private Wealth & Trust
Connecticut
$77.5K +$13.4K +107 +21%
TFIPS
643
Towarzystwo Funduszy Inwestycyjnych PZU SA
$76.6K -$17.6K -140 -19%
AAS
644
Ameritas Advisory Services
Nebraska
$76.5K +$76.5K +609 New
T
645
Tidemark
California
$74.3K – – –
SS
646
Sunbelt Securities
Texas
$72.9K +$72.9K +477 New
SIC
647
Salem Investment Counselors
North Carolina
$71.1K -$126 -1 -0.2%
ABWM
648
Alpine Bank Wealth Management
Colorado
$68.4K -$44K -350 -39%
HDIM
649
Hanson & Doremus Investment Management
Vermont
$66K – – –
LFG
650
Larson Financial Group
Missouri
$64.9K +$54.8K +436 +538%
24 25
26
27 28