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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 %
OL
601
Optas LLC
Texas
$200K +$200K +1,594 New
SM
602
STF Management
Texas
$191K +$9.55K +76 +5%
ERSOT
603
Employees Retirement System of Texas
Texas
$184K +$184K +1,467 New
LS
604
Livforsakringsbolaget Skandia
Sweden
$179K – – –
DMBA
605
Deseret Mutual Benefit Administrators
Utah
$174K – – –
CI
606
CX Institutional
Indiana
$172K +$6.91K +55 +4%
SBFM
607
S-Bank Fund Management
Finland
$164K -$13.6K -108 -8%
HFS
608
Hantz Financial Services
Michigan
$149K +$145K +1,153 +3,843%
WT
609
Whittier Trust
California
$148K -$1.51K -12 -1%
NAAA
610
New Age Alpha Advisors
New York
$142K +$2.76K +22 +2%
BTI
611
Blue Trust Inc
Georgia
$139K +$65.6K +522 +89%
CIBC Private Wealth Group
612
CIBC Private Wealth Group
Georgia
$138K -$7.79K -62 -5%
IA
613
IFP Advisors
Florida
$136K +$27.6K +220 +25%
TCOV
614
Trust Company of Vermont
Vermont
$132K – – –
UB
615
UMB Bank
Missouri
$129K +$70K +557 +118%
SPIA
616
Steward Partners Investment Advisory
New York
$124K -$10.3K -82 -8%
FFA
617
Farther Finance Advisors
California
$120K -$21.6K -172 -15%
MWM
618
Mascoma Wealth Management
New Hampshire
$116K -$251 -2 -0.2%
NIM
619
Nexus Investment Management
Ontario, Canada
$116K – – –
APW
620
Acima Private Wealth
Virginia
$115K – – –
TH
621
TCTC Holdings
Texas
$113K – – –
CBT
622
CoreFirst Bank & Trust
Kansas
$112K +$112K +894 New
POIA
623
Pin Oak Investment Advisors
Texas
$112K – – –
LB
624
Legacy Bridge
Iowa
$111K -$7.66K -61 -6%
MCM
625
Manchester Capital Management
Vermont
$110K -$3.01K -24 -3%
23 24
25
26 27