BIIB icon

Biogen
BIIB

Overview Fund Activity

868 hedge funds and large institutions have $17.4B invested in Biogen in 2025 Q1 according to their latest regulatory filings, with 127 funds opening new positions, 328 increasing their positions, 264 reducing their positions, and 105 closing their positions.

Holders
868
Holders Change
+8
Holders Change %
+0.93%
% of All Funds
11.79%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
127
Increased
328
Reduced
264
Closed
105
Calls
$345M
Puts
$621M
Net Calls
-$276M
Net Calls Change
-$229M

Top Buyers

1
AQR Capital Management
1
AQR Capital Management
Connecticut
$187M
2
Balyasny Asset Management
2
Balyasny Asset Management
Illinois
$108M
3
SG Americas Securities
3
SG Americas Securities
New York
$98.5M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$179M
5
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$55.7M

Top Sellers

1
Pacer Advisors
1
Pacer Advisors
Pennsylvania
$185M
2
BGC
2
Beutel, Goodman & Co
Ontario, Canada
$1K
3
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$158M
4
JPMorgan Chase & Co
4
JPMorgan Chase & Co
New York
$200M
5
O
5
OrbiMed
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
A
51
AustralianSuper
Australia
$54.4M 397,697 +397,697 New
California Public Employees Retirement System
52
California Public Employees Retirement System
California
$52.7M 385,094 -12,755 -3%
BNP Paribas Financial Markets
53
BNP Paribas Financial Markets
France
$50.1M 366,181 -11,780 -3%
Royal Bank of Canada
54
Royal Bank of Canada
Ontario, Canada
$45.2M 330,562 +84,227 +34%
Citigroup
55
Citigroup
New York
$41.4M 302,615 +38,276 +14%
Fisher Asset Management
56
Fisher Asset Management
Washington
$40.9M 299,030 +118,106 +65%
RhumbLine Advisers
57
RhumbLine Advisers
Massachusetts
$40.5M 296,294 +27,703 +10%
TD Asset Management
58
TD Asset Management
Ontario, Canada
$38.9M 284,376 -71,330 -20%
Connor, Clark & Lunn Investment Management (CC&L)
59
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$38M 277,834 +137,514 +98%
Mitsubishi UFJ Asset Management
60
Mitsubishi UFJ Asset Management
Japan
$37.4M 273,548 +27,734 +11%
National Pension Service
61
National Pension Service
South Korea
$37.1M 271,483 +21,398 +9%
Susquehanna International Group
62
Susquehanna International Group
Pennsylvania
$36.7M 268,372 -216,676 -45%
TSW
63
Thompson Siegel & Walmsley
Virginia
$35.2M 257,456 +257,456 New
LSV Asset Management
64
LSV Asset Management
Illinois
$33.1M 241,976 +7,528 +3%
Verition Fund Management
65
Verition Fund Management
Connecticut
$32.7M 238,952 +11,822 +5%
Canada Pension Plan Investment Board
66
Canada Pension Plan Investment Board
Ontario, Canada
$31.6M 230,804 -30,358 -12%
California State Teachers Retirement System (CalSTRS)
67
California State Teachers Retirement System (CalSTRS)
California
$31.5M 230,535 -2,783 -1%
AllianceBernstein
68
AllianceBernstein
Tennessee
$31.3M 229,054 +48,331 +27%
ProShare Advisors
69
ProShare Advisors
Maryland
$30.7M 224,655 +26,329 +13%
Pictet Asset Management
70
Pictet Asset Management
Switzerland
$30M 217,530 -76,163 -26%
Swedbank
71
Swedbank
Sweden
$29.8M 218,039 +33,994 +18%
Arrowstreet Capital
72
Arrowstreet Capital
Massachusetts
$29.4M 214,780 +214,780 New
Nomura Holdings
73
Nomura Holdings
Japan
$29.3M 213,770 -5,110 -2%
Capital Fund Management (CFM)
74
Capital Fund Management (CFM)
France
$29.1M 213,015 -27,328 -11%
Russell Investments Group
75
Russell Investments Group
United Kingdom
$28.4M 207,649 +85,886 +71%
1 2
3
4 5