MBX Biosciences, Inc. Common Stock (MBX) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for MBX. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 165 institutions reported holding MBX, with 55.5 million shares worth $3.1 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Frazier Life Sciences Management | 6,652,013 | $367M | UNCHANGED |
| FMR | 5,322,885 | $294M | INCREASED |
| Wellington Management | 4,977,523 | $275M | INCREASED |
| Nea Management Company | 3,614,486 | $200M | UNCHANGED |
| Orbimed Advisors | 3,428,736 | $189M | DECREASED |
Full institutional holdings, insider history, and congressional trades for MBX Biosciences, Inc. Common Stock on SentiSense.