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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.

New
Increased
Maintained
Reduced
Closed
Holders
850
Holders Change
-18
Holders Change %
-2.07%
% of All Funds
11.4%
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
Point72 Asset Management
Connecticut
$481M
2
Alyeska Investment Group
Alyeska Investment Group
Illinois
$63.9M
3
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
$78.4M
4
Fidelity Investments
Fidelity Investments
Massachusetts
$210M
5
A
AustralianSuper
Australia
$92.9M

Top Sellers

1
BlackRock
BlackRock
New York
$1.7B
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
$175M
3
Amundi
Amundi
France
$77.2M
4
SG Americas Securities
SG Americas Securities
New York
$2.82M
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
$93.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
AAMU
476
APG Asset Management US
New York
$392K – – –
NP
477
NorthRock Partners
Minnesota
$391K +$391K +3,116 New
CA
478
Cornerstone Advisors
North Carolina
$389K -$62.8K -500 -14%
SAI
479
Savvy Advisors Inc
New York
$385K +$385K +3,065 New
EC
480
EntryPoint Capital
New York
$384K -$14.8K -118 -4%
HI
481
Humankind Investments
New York
$382K -$57.5K -458 -13%
HKAM
482
Horizon Kinetics Asset Management
New York
$382K -$16.5K -131 -4%
AWA
483
Arkadios Wealth Advisors
Georgia
$377K -$44.1K -351 -10%
NAS
484
Nicolet Advisory Services
Wisconsin
$374K +$56.7K +430 +18%
HAIM
485
Hunter Associates Investment Management
Pennsylvania
$370K +$3.78K +30 +1%
TRCT
486
Tower Research Capital (TRC)
New York
$366K -$667K -5,311 -65%
TTIC
487
Tower Trust & Investment Company
Iowa
$364K +$21.1K +168 +6%
P
488
&Partners
Tennessee
$361K +$136K +1,076 +60%
MWM
489
Massachusetts Wealth Management
Massachusetts
$361K +$14.4K +115 +4%
FFM
490
Forum Financial Management
Illinois
$358K -$87K -693 -20%
BPCE
491
Bank Pictet & Cie (Europe)
Germany
$355K +$152K +1,212 +75%
IQI
492
Integrated Quantitative Investments
Washington
$354K +$27.6K +220 +8%
KIA
493
KCM Investment Advisors
California
$354K -$2.51K -20 -0.7%
AC
494
Avestar Capital
New York
$351K +$78.1K +622 +29%
ACM
495
Aquatic Capital Management
Illinois
$351K -$4.07M -32,440 -92%
NB
496
Nicolet Bankshares
Wisconsin
$350K +$122K +974 +54%
KCM
497
Kennondale Capital Management
Virginia
$347K – – –
FT
498
Fiduciary Trust
Massachusetts
$346K -$22.7K -181 -6%
MTIM
499
Marathon Trading Investment Management
Pennsylvania
$345K – – –
UCI
500
Uncommon Cents Investing
Wisconsin
$344K -$89.9K -716 -21%
18 19
20
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