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874 hedge funds and large institutions have $20.2B invested in Biogen in 2024 Q4 according to their latest regulatory filings, with 131 funds opening new positions, 300 increasing their positions, 322 reducing their positions, and 159 closing their positions.

New
Increased
Maintained
Reduced
Closed

1.72% more ownership

Funds ownership: 89.11%90.83% (+1.7%)

7% less repeat investments, than reductions

Existing positions increased: 300 | Existing positions reduced: 322

5% less funds holding

Funds holding: 916874 (-42)

13% less call options, than puts

Call options by funds: $310M | Put options by funds: $356M

18% less first-time investments, than exits

New positions opened: 131 | Existing positions closed: 159

19% less capital invested

Capital invested by funds: $25.1B → $20.2B (-$4.84B)

38% less funds holding in top 10

Funds holding in top 10: 85 (-3)

Holders
874
Holders Change
-42
Holders Change %
-4.59%
% of All Funds
11.51%
Holding in Top 10
5
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-37.5%
% of All Funds
0.07%
New
131
Increased
300
Reduced
322
Closed
159
Calls
$310M
Puts
$356M
Net Calls
-$45.6M
Net Calls Change
+$21.7M
Name Holding Trade Value Shares
Change
Change in
Stake
Nisa Investment Advisors
76
Nisa Investment Advisors
Missouri
$30.5M +$25.2M +149,461 +300%
ProShare Advisors
77
ProShare Advisors
Maryland
$30.3M +$4.94M +29,294 +17%
PAI
78
Palo Alto Investors
California
$29.1M -$6.54M -38,768 -17%
Rafferty Asset Management
79
Rafferty Asset Management
New York
$29M +$4.95M +29,319 +18%
Retirement Systems of Alabama
80
Retirement Systems of Alabama
Alabama
$28.3M +$26M +154,062 +492%
Swedbank
81
Swedbank
Sweden
$28.1M -$162K -963 -0.5%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
82
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$27.8M +$26M +154,168 +557%
Fisher Asset Management
83
Fisher Asset Management
Washington
$27.7M +$19.3M +114,156 +171%
AllianceBernstein
84
AllianceBernstein
Tennessee
$27.6M +$269K +1,592 +0.9%
WCM
85
Wedge Capital Management
North Carolina
$27.4M +$4.47M +26,530 +17%
BNP Paribas Asset Management
86
BNP Paribas Asset Management
France
$27.3M -$37.3M -220,936 -55%
National Bank of Canada
87
National Bank of Canada
Quebec, Canada
$27.2M -$2.29M -13,576 -7%
Principal Financial Group
88
Principal Financial Group
Iowa
$25.2M -$663K -3,931 -2%
Axa
89
Axa
France
$24.7M +$17.5M +103,677 +179%
Citadel Advisors
90
Citadel Advisors
Florida
$23.5M -$36.9M -218,706 -59%
Universal-Beteiligungs- und Servicegesellschaft
91
Universal-Beteiligungs- und Servicegesellschaft
Germany
$23.4M +$25.8M +152,867 New
Voloridge Investment Management
92
Voloridge Investment Management
Florida
$23.2M +$25.6M +151,678 New
Zurich Cantonal Bank
93
Zurich Cantonal Bank
Switzerland
$22M +$12.6M +74,503 +107%
Ameriprise
94
Ameriprise
Minnesota
$22M -$170M -1,006,463 -87%
Raymond James Financial
95
Raymond James Financial
Florida
$21.7M +$23.9M +141,968 New
Connor, Clark & Lunn Investment Management (CC&L)
96
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$21.5M +$19.8M +117,576 +517%
State Board of Administration of Florida Retirement System
97
State Board of Administration of Florida Retirement System
Florida
$20.4M -$1.57M -9,285 -7%
BBVA
98
Banco Bilbao Vizcaya Argentaria
Spain
$19.4M -$408K -2,418 -2%
Canada Life
99
Canada Life
Manitoba, Canada
$19.3M -$549K -3,257 -3%
RPAM
100
Rhenman & Partners Asset Management
Sweden
$18.9M +$9.55M +56,600 +84%