13F Insight
DOSSIER · 13F Holders · Q4 2025Mega-capCrowded
MIRM 4 05/01/29

MIRUM PHARMACEUTICALS INC

38 institutions still hold MIRUM PHARMACEUTICALS INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 604749AB7·38 13F holders·last filed Dec 31, 2025
Market cap
—
▼ 2.7%
vs prior quarter
13F value held
$861M
45.0% inst. owned
of float
Holders
38
+89 QoQ
filers reporting
Activity
+41 / −52
+832 added · −709 reduced
this quarter
Concentration
20.98%
DEERFIELD MANAGEMENT COMPANY, L.P. #1
top holder share
AI Holders Summary · Q4 2025

38 institutions reported MIRM 4 05/01/29 in Q4 2025. DEERFIELD MANAGEMENT COMPANY, L.P. leads at 21.0% of the visible book. +89 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 0001009258
$181M70.0M2.31%Q4 202502
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$132M43.8M2.03%Q1 202603
CAPSTONE INVESTMENT ADVISORS, LLC
CIK 0001426196
$81M27.0M0.14%Q1 202604
READYSTATE ASSET MANAGEMENT LP
CIK 0001900923
$79M30.4M3.19%Q4 202505
MACKAY SHIELDS LLC
CIK 0000061227
$69M23.1M2.53%Q1 202606
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$67M22.3M0.03%Q1 202607
Polar Asset Management Partners Inc.
CIK 0001326389
$64M21.4M1.27%Q1 202608
CITADEL ADVISORS LLC
CIK 0001423053
$48M18.4M0.01%Q4 202509
Aequim Alternative Investments LP
CIK 0001728201
$36M12.0M0.70%Q1 202610
Point72 Asset Management, L.P.
CIK 0001603466
$28M9.4M0.04%Q1 202611
FMR LLC
CIK 0000315066
$20M6.6M0.00%Q1 202612
BlackRock, Inc.
CIK 0002012383
$15M5.2M0.00%Q1 202613
SSI INVESTMENT MANAGEMENT LLC
CIK 0000938487
$10M3.3M0.67%Q1 202614
BANK OF MONTREAL /CAN/
CIK 0000927971
$6M2.0M0.00%Q1 202615
LINDEN ADVISORS LP
CIK 0001279396
$6M2.0M0.03%Q1 202616
Nicholas Investment Partners, LP
CIK 0001389574
$6M1.9M0.42%Q1 202617
FRANKLIN RESOURCES INC
CIK 0000038777
$6M1.9M0.00%Q1 202618
ADVENT CAPITAL MANAGEMENT /DE/
CIK 0001097278
$4M1.4M0.12%Q1 202619
Invesco Ltd.
CIK 0000914208
$3M1.1M0.00%Q1 202620
KORNITZER CAPITAL MANAGEMENT INC /KS
CIK 0000898358
$3M1.0M0.06%Q1 2026
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