13F Insight
DOSSIER · 13F Holders · Q1 2026Inflation hedgeYield
MBX

MBX BIOSCIENCES INC

161 institutions still hold MBX BIOSCIENCES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 55287L101·161 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 2.0%
vs prior quarter
13F value held
$1.2B
50.0% inst. owned
of float
Holders
161
-32 QoQ
filers reporting
Activity
+32 / −32
+824 added · −826 reduced
this quarter
Concentration
16.09%
Frazier Life Sciences Management, L.P. #1
top holder share
AI Holders Summary · Q1 2026

161 institutions reported MBX in Q1 2026. Frazier Life Sciences Management, L.P. leads at 16.1% of the visible book. -32 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Frazier Life Sciences Management, L.P.
CIK 0001892134
$199M6.7M5.11%Q1 202602
ORBIMED ADVISORS LLC
CIK 0001055951
$109M3.6M2.16%Q1 202603
NEA Management Company, LLC
CIK 0001512848
$108M3.6M6.13%Q1 202604
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$95M3.2M0.02%Q1 202605
BlackRock, Inc.
CIK 0002012383
$88M2.9M0.00%Q1 202606
FMR LLC
CIK 0000315066
$88M2.9M0.00%Q1 202607
Deep Track Capital, LP
CIK 0001856083
$82M2.8M1.34%Q1 202608
NVP Associates, LLC
CIK 0001545692
$67M2.1M26.40%Q4 202509
Polar Capital Holdings Plc
CIK 0001837309
$48M1.6M0.17%Q1 202610
BRAIDWELL LP
CIK 0001920938
$45M1.5M1.49%Q1 202611
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$44M1.5M0.00%Q1 202612
Aaron Wealth Advisors LLC
CIK 0001812198
$35M1.2M1.98%Q1 202613
Cormorant Asset Management, LP
CIK 0001583977
$33M1.1M1.68%Q1 202614
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$30M1.0M0.22%Q1 202615
STEMPOINT CAPITAL LP
CIK 0001952142
$30M999K2.88%Q1 202616
Kynam Capital Management, LP
CIK 0001907884
$28M935K1.72%Q1 202617
Woodline Partners LP
CIK 0001784547
$27M900K0.10%Q1 202618
EVENTIDE ASSET MANAGEMENT, LLC
CIK 0001442891
$27M890K0.44%Q1 202619
CITADEL ADVISORS LLC
CIK 0001423053
$26M835K0.00%Q4 202520
Caligan Partners LP
CIK 0001727492
$25M849K1.69%Q1 2026
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