MBX BIOSCIENCES, INC.

PublicCIK: 1776111
MBXNASDAQ
Location

CARMEL, IN

13F Filings

Institutional Holders

MBX BIOSCIENCES, INC.MBX— Latest position per institution from SEC 13F filings

15

Institutional holders

46.98M

Total shares held

2.42B

Estimated value

2.35M

Avg. position size

1

FRAZIER LIFE SCIENCES MANAGEMENT, L.P.

CIK 1892134

Shares

6.65M

Value

367.19M

Filed

Jun 30, 2026

2

FMR LLC

CIK 315066

Shares

5.32M

Value

293.82M

Filed

Jun 30, 2026

3

WELLINGTON MANAGEMENT GROUP LLP

CIK 902219

Shares

4.98M

Value

274.76M

Filed

Jun 30, 2026

4

NEA MANAGEMENT COMPANY, LLC

CIK 1512848

Shares

3.61M

Value

199.52M

Filed

Jun 30, 2026

5

ORBIMED ADVISORS LLC

CIK 1055951

Shares

3.43M

Value

189.27M

Filed

Jun 30, 2026

6

BLACKROCK, INC.

CIK 2012383

Shares

3.32M

Value

183.47M

Filed

Jun 30, 2026

7

PARADIGM BIOCAPITAL ADVISORS LP

CIK 1855655

Shares

2.51M

Value

138.44M

Filed

Jun 30, 2026

8

NVP ASSOCIATES, LLC

CIK 1545692

Shares

2.14M

Value

117.93M

Filed

Jun 30, 2026

9

VANGUARD GROUP INC

CIK 102909

Shares

1.82M

Value

57.33M

Filed

Dec 31, 2025

10

DEEP TRACK CAPITAL, LP

CIK 1856083

Shares

1.73M

Value

95.64M

Filed

Jun 30, 2026

11

POLAR CAPITAL HOLDINGS PLC

CIK 1837309

Shares

1.61M

Value

88.79M

Filed

Jun 30, 2026

12

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

1.48M

Value

81.55M

Filed

Jun 30, 2026

13

MPM BIOIMPACT LLC

CIK 1687078

Shares

1.29M

Value

14.77M

Filed

Jun 30, 2025

14

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

CIK 1081019

Shares

1.29M

Value

23.38K

Filed

Jun 30, 2026

15

AARON WEALTH ADVISORS LLC

CIK 1812198

Shares

1.17M

Value

64.46M

Filed

Jun 30, 2026

16

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 938206

Shares

1.06M

Value

58.32M

Filed

Jun 30, 2026

17

KYNAM CAPITAL MANAGEMENT, LP

CIK 1907884

Shares

934.80K

Value

51.60M

Filed

Jun 30, 2026

18

WOODLINE PARTNERS LP

CIK 1784547

Shares

900.09K

Value

49.69M

Filed

Jun 30, 2026

19

EVENTIDE ASSET MANAGEMENT, LLC

CIK 1442891

Shares

873.49K

Value

48.22M

Filed

Jun 30, 2026

20

STATE STREET CORP

CIK 93751

Shares

864.47K

Value

47.72M

Filed

Jun 30, 2026

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.