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Regeneron Pharmaceuticals
REGN

Overview Fund Activity

1,188 hedge funds and large institutions have $46.8B invested in Regeneron Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 133 funds opening new positions, 436 increasing their positions, 471 reducing their positions, and 199 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,188
Holders Change
-85
Holders Change %
-6.68%
% of All Funds
15.93%
Holding in Top 10
12
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-20%
% of All Funds
0.16%
New
133
Increased
436
Reduced
471
Closed
199
Calls
$1.15B
Puts
$1.01B
Net Calls
+$139M
Net Calls Change
+$166M

Top Buyers

1
Dodge & Cox
Dodge & Cox
California
+$789M
2
Citadel Advisors
Citadel Advisors
Florida
+$318M
3
Two Sigma Advisers
Two Sigma Advisers
New York
+$202M
4
BlackRock
BlackRock
New York
+$184M
5
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$171M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
-$2.24B
2
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
-$902M
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$740M
4
Capital International Investors
Capital International Investors
California
-$433M
5
Amundi
Amundi
France
-$387M
Name Holding Trade Value Shares
Change 		Shares
Change %
LIS
1176
Legacy Investment Solutions
Idaho
$1.05K +$1.05K +2 New
LFA
1177
LGT Financial Advisors
Texas
$1.05K +$1.05K +2 New
T
1178
TOBAM
France
$1K – – –
PMAM
1179
Picton Mahoney Asset Management
Ontario, Canada
$1K – – –
KIM
1180
Kestra Investment Management
Texas
$635 – – –
HFS
1181
Hughes Financial Services
Virginia
$555 -$1.67K -3 -75%
M
1182
MOTCO
Texas
$545 – – –
DF
1183
DecisionPoint Financial
Arizona
$535 +$535 +1 New
PWS
1184
Peterson Wealth Services
Utah
$526 +$526 +1 New
NEWAS
1185
N.E.W. Advisory Services
Wisconsin
$525 -$525 -1 -50%
BHWM
1186
Bay Harbor Wealth Management
Maryland
$525 +$525 +1 New
HIA
1187
HFM Investment Advisors
New Jersey
$525 +$525 +1 New
DWA
1188
Delos Wealth Advisors
Texas
$525 +$525 +1 New
WorldQuant Millennium Advisors
1189
WorldQuant Millennium Advisors
New York
– -$82.3M -129,801 Closed
Viking Global Investors
1190
Viking Global Investors
Connecticut
– -$62M -97,739 Closed
SC
1191
Samlyn Capital
New York
– -$29.1M -45,914 Closed
CF
1192
Corebridge Financial
Texas
– -$21.2M -33,424 Closed
CVA
1193
Ceredex Value Advisors
Florida
– -$19.7M -31,025 Closed
BCAM
1194
Boston Common Asset Management
Massachusetts
– -$17.3M -27,343 Closed
APM
1195
Avidity Partners Management
Texas
– -$16.1M -25,400 Closed
BSA
1196
Braun Stacey Associates
New York
– -$13M -20,516 Closed
PR
1197
Payden & Rygel
California
– -$10.2M -16,100 Closed
CCM
1198
Catalio Capital Management
New York
– -$7.78M -12,261 Closed
CCB
1199
Cutter & Co Brokerage
Missouri
– -$6.87M -10,838 Closed
Parallax Volatility Advisers
1200
Parallax Volatility Advisers
California
– -$5.83M -9,197 Closed
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