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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.

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

Top Sellers

1
Pacer Advisors
Pacer Advisors
Pennsylvania
$185M
2
BGC
Beutel, Goodman & Co
Ontario, Canada
$1K
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$158M
4
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$200M
5
O
OrbiMed
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
ET
276
Entropy Technologies
New York
$2.37M -$2.34M -17,087 -50%
MOACM
277
Mutual of America Capital Management
New York
$2.33M -$59.7K -436 -2%
EP
278
Edgestream Partners
New Jersey
$2.31M -$450K -3,285 -16%
XT
279
XTX Topco
Cayman Islands
$2.29M +$1.98M +14,459 +633%
QCM
280
Quantinno Capital Management
New York
$2.29M +$1.43M +10,442 +166%
Bank of Nova Scotia
281
Bank of Nova Scotia
Ontario, Canada
$2.23M -$580K -4,241 -21%
LFAS
282
Level Four Advisory Services
Texas
$2.21M +$1.19M +8,685 +116%
BIAS
283
Beacon Investment Advisory Services
New Jersey
$2.2M -$483K -3,529 -18%
Vontobel Holding
284
Vontobel Holding
Switzerland
$2.18M +$92.6K +677 +4%
LP
285
LMR Partners
United Kingdom
$2.16M +$178K +1,302 +9%
FTC
286
Farmers Trust Company
Ohio
$2.03M +$275K +2,012 +16%
TRCT
287
Tower Research Capital (TRC)
New York
$2.02M -$464K -1,894 -19%
OAM
288
Ostrum Asset Management
France
$2.01M -$23.7K -173 -1%
AF
289
Avanza Fonder
Sweden
$2.01M -$32.7K -249 -2%
Thrivent Financial for Lutherans
290
Thrivent Financial for Lutherans
Minnesota
$2.01M -$162K -1,185 -7%
SIP
291
Stoneridge Investment Partners
Pennsylvania
$2M -$2.63M -19,200 -57%
QCM
292
Qsemble Capital Management
New York
$1.98M +$1.56M +11,406 +373%
AIM
293
Aigen Investment Management
New York
$1.97M +$1.97M +14,365 New
ITC
294
Inspire Trust Company
Nevada
$1.96M +$274K +2,000 +16%
Kovitz Investment Group Partners
295
Kovitz Investment Group Partners
Illinois
$1.95M +$1.41M +10,318 +265%
QT
296
Quantbot Technologies
New York
$1.93M +$1.6M +11,665 +472%
SIM
297
Sprucegrove Investment Management
Ontario, Canada
$1.93M -$11.5M -83,745 -86%
GF
298
Gabelli Funds
New York
$1.93M – – –
TPSF
299
Texas Permanent School Fund
Texas
$1.89M +$1.89M +15,595 New
AAM
300
Auxier Asset Management
Oregon
$1.85M -$68.3K -499 -4%
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