13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Pharmaceutical PreparationsHigh-convictionMulti-bagger
REGN

REGENERON PHARMACEUTICALS

1,457 institutions still hold REGENERON PHARMACEUTICALS as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 75886F107·Pharmaceutical Preparations·1,457 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 1.7%
vs prior quarter
13F value held
$41.5B
53.0% inst. owned
of float
Holders
1,457
+9 QoQ
filers reporting
Activity
+13 / −76
+862 added · −807 reduced
this quarter
Concentration
16.68%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

1,457 institutions reported REGN in Q1 2026. BlackRock, Inc. leads at 16.7% of the visible book. +9 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$6.9B8.9M0.12%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$5.1B6.7M0.13%Q1 202603
STATE STREET CORP
CIK 0000093751
$3.6B4.7M0.12%Q1 202604
DODGE & COX
CIK 0000200217
$3.4B4.5M1.89%Q1 202605
JPMORGAN CHASE & CO
CIK 0000019617
$3.2B4.3M0.21%Q1 202606
FRANKLIN RESOURCES INC
CIK 0000038777
$2.1B2.7M0.52%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2.0B2.6M0.12%Q1 202608
Nuveen, LLC
CIK 0001871926
$1.6B2.1M0.43%Q1 202609
LOOMIS SAYLES & CO L P
CIK 0000312348
$1.5B1.9M1.99%Q1 202610
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$1.4B1.8M0.27%Q1 202611
Invesco Ltd.
CIK 0000914208
$1.3B1.7M0.20%Q1 202612
Vanguard Portfolio Management
CIK 0002100121· Index
$1.3B1.7M0.07%Q1 202613
FMR LLC
CIK 0000315066
$1.2B1.5M0.06%Q1 202614
GOLDMAN SACHS GROUP INC
CIK 0000886982
$1.2B1.5M0.13%Q1 202615
Capital World Investors
CIK 0001422849
$1.1B1.4M0.15%Q1 202616
MORGAN STANLEY
CIK 0000895421
$1.0B1.3M0.06%Q1 202617
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$946M1.2M0.43%Q1 202618
BANK OF AMERICA CORP /DE/
CIK 0000070858
$919M1.2M0.07%Q1 202619
Amundi
CIK 0001330387
$780M1.0M0.21%Q1 202620
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$753M974K0.08%Q1 2026
Page 1 of 73
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