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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, 437 increasing their positions, 470 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
437
Reduced
470
Closed
199
Calls
$1.15B
Puts
$1.01B
Net Calls
+$139M
Net Calls Change
+$166M

Top Buyers

1
Dodge & Cox
Dodge & Cox
California
$2.01B
2
Citadel Advisors
Citadel Advisors
Florida
$357M
3
Two Sigma Advisers
Two Sigma Advisers
New York
$493M
4
BlackRock
BlackRock
New York
$4.87B
5
Acadian Asset Management
Acadian Asset Management
Massachusetts
$244M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$1.75B
2
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$2.07B
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$402M
4
Capital International Investors
Capital International Investors
California
$1.66B
5
Amundi
Amundi
France
$491M
Name Holding Trade Value Shares
Change 		Shares
Change %
GCA
301
Greenwood Capital Associates
South Carolina
$6.75M +$2.32M +4,419 +52%
GAM
302
Generali Asset Management
Italy
$6.66M +$866K +1,650 +15%
HT
303
Headlands Technologies
Illinois
$6.64M +$4.86M +9,259 +273%
AIM
304
ARK Investment Management
Florida
$6.62M -$571K -1,088 -8%
RAM
305
RK Asset Management
Michigan
$6.62M +$20.5K +39 +0.3%
Janney Montgomery Scott
306
Janney Montgomery Scott
Pennsylvania
$6.61M -$8.11M -15,452 -55%
SC
307
Slow Capital
California
$6.51M -$3.71M -7,071 -36%
Calamos Advisors
308
Calamos Advisors
Illinois
$6.44M – – –
NAM
309
NorthCrest Asset Manangement
Minnesota
$6.32M -$191K -349 -3%
GIM
310
Generate Investment Management
New Zealand
$6.3M +$6.3M +12,000 New
HCM
311
Harvey Capital Management
Florida
$6.28M -$722K -1,350 -10%
TI
312
Trexquant Investment
Connecticut
$6.27M -$23.6M -44,995 -79%
MOACM
313
Mutual of America Capital Management
New York
$6.24M -$171K -326 -3%
ClearBridge Investments
314
ClearBridge Investments
New York
$6.22M +$2.69M +5,121 +76%
AI
315
Atria Investments
North Carolina
$6.02M +$757K +1,442 +14%
MPM
316
Meritage Portfolio Management
Kansas
$6.01M +$6.01M +11,455 New
MWM
317
Marietta Wealth Management
Georgia
$6.01M +$353K +673 +6%
ACA
318
Anchor Capital Advisors
Massachusetts
$5.97M +$197K +375 +3%
RSCM
319
Rock Springs Capital Management
Maryland
$5.93M +$4.46M +8,500 +304%
TSW
320
Thompson Siegel & Walmsley
Virginia
$5.82M +$530K +1,010 +10%
EMPI
321
Elo Mutual Pension Insurance
Finland
$5.73M -$638K -1,215 -10%
YCM
322
Yousif Capital Management
Michigan
$5.71M -$107K -203 -2%
VPIM
323
Vanguard Personalized Indexing Management
California
$5.7M +$416K +792 +8%
CAPTRUST Financial Advisors
324
CAPTRUST Financial Advisors
North Carolina
$5.63M -$1.87M -3,565 -25%
AGP
325
Artia Global Partners
Florida
$5.6M +$5.6M +10,671 New
11 12
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