CARMEL, IN
MBX BIOSCIENCES, INC.MBX— Latest position per institution from SEC 13F filings
15
Institutional holders
43.12M
Total shares held
1.22B
Estimated value
2.16M
Avg. position size
FRAZIER LIFE SCIENCES MANAGEMENT, L.P.
CIK 1892134
Shares
6.65M
Value
198.56M
Filed
Mar 31, 2026
ORBIMED ADVISORS LLC
CIK 1055951
Shares
3.64M
Value
108.59M
Filed
Mar 31, 2026
NEA MANAGEMENT COMPANY, LLC
CIK 1512848
Shares
3.61M
Value
107.89M
Filed
Mar 31, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
3.19M
Value
95.28M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
2.94M
Value
87.80M
Filed
Mar 31, 2026
FMR LLC
CIK 315066
Shares
2.94M
Value
87.66M
Filed
Mar 31, 2026
DEEP TRACK CAPITAL, LP
CIK 1856083
Shares
2.76M
Value
82.31M
Filed
Mar 31, 2026
NVP ASSOCIATES, LLC
CIK 1545692
Shares
2.14M
Value
63.77M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
1.82M
Value
57.33M
Filed
Dec 31, 2025
POLAR CAPITAL HOLDINGS PLC
CIK 1837309
Shares
1.62M
Value
48.42M
Filed
Mar 31, 2026
BRAIDWELL LP
CIK 1920938
Shares
1.49M
Value
44.55M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.48M
Value
44.11M
Filed
Mar 31, 2026
FRANKLIN RESOURCES INC
CIK 38777
Shares
1.31M
Value
22.88M
Filed
Sep 30, 2025
MPM BIOIMPACT LLC
CIK 1687078
Shares
1.29M
Value
14.77M
Filed
Jun 30, 2025
AARON WEALTH ADVISORS LLC
CIK 1812198
Shares
1.17M
Value
34.87M
Filed
Mar 31, 2026
CORMORANT ASSET MANAGEMENT, LP
CIK 1583977
Shares
1.12M
Value
33.43M
Filed
Mar 31, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
1.03M
Value
30.72K
Filed
Mar 31, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
1.02M
Value
30.39M
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
968.03K
Value
28.90M
Filed
Mar 31, 2026
KYNAM CAPITAL MANAGEMENT, LP
CIK 1907884
Shares
934.80K
Value
27.90M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | 1892134 | 6.65M | 198.56M | Mar 31, 2026 |
| 2 | ORBIMED ADVISORS LLC | 1055951 | 3.64M | 108.59M | Mar 31, 2026 |
| 3 | NEA MANAGEMENT COMPANY, LLC | 1512848 | 3.61M | 107.89M | Mar 31, 2026 |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 3.19M | 95.28M | Mar 31, 2026 |
| 5 | BLACKROCK, INC. | 2012383 | 2.94M | 87.80M | Mar 31, 2026 |
| 6 | FMR LLC | 315066 | 2.94M | 87.66M | Mar 31, 2026 |
| 7 | DEEP TRACK CAPITAL, LP | 1856083 | 2.76M | 82.31M | Mar 31, 2026 |
| 8 | NVP ASSOCIATES, LLC | 1545692 | 2.14M | 63.77M | Mar 31, 2026 |
| 9 | VANGUARD GROUP INC | 102909 | 1.82M | 57.33M | Dec 31, 2025 |
| 10 | POLAR CAPITAL HOLDINGS PLC | 1837309 | 1.62M | 48.42M | Mar 31, 2026 |
| 11 | BRAIDWELL LP | 1920938 | 1.49M | 44.55M | Mar 31, 2026 |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.48M | 44.11M | Mar 31, 2026 |
| 13 | FRANKLIN RESOURCES INC | 38777 | 1.31M | 22.88M | Sep 30, 2025 |
| 14 | MPM BIOIMPACT LLC | 1687078 | 1.29M | 14.77M | Jun 30, 2025 |
| 15 | AARON WEALTH ADVISORS LLC | 1812198 | 1.17M | 34.87M | Mar 31, 2026 |
| 16 | CORMORANT ASSET MANAGEMENT, LP | 1583977 | 1.12M | 33.43M | Mar 31, 2026 |
| 17 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 1.03M | 30.72K | Mar 31, 2026 |
| 18 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 1.02M | 30.39M | Mar 31, 2026 |
| 19 | CITADEL ADVISORS LLC | 1423053 | 968.03K | 28.90M | Mar 31, 2026 |
| 20 | KYNAM CAPITAL MANAGEMENT, LP | 1907884 | 934.80K | 27.90M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.