MBX Biosciences, Inc. MBX
48.26 USD -4.22 (-8.04%)
Nov 5, 2026, 1:37 PM EST
48.03 Day range 52.63
21.90 52-week range 72.64
- YTD
- +53.01%
- 1 year
- +114.01%
Held by funds
113 US ETFs and mutual funds hold MBX · largest positions
Ownership
Held by insiders 2.88%
Held by institutions 116.19%
Float held by institutions 119.63%
Institutions 248
Top institutional holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 13.81% | 6,652,013 | 349.10M | Jun 29, 2026 |
| FMR, LLC | 11.05% | 5,322,885 | 279.35M | Jun 29, 2026 |
| Wellington Management Group, LLP | 10.34% | 4,977,523 | 261.22M | Jun 29, 2026 |
| NEA Management Company, LLC | 7.51% | 3,614,486 | 189.69M | Jun 29, 2026 |
| Orbimed Advisors LLC. | 7.12% | 3,428,736 | 179.94M | Jun 29, 2026 |
| Blackrock Inc. | 6.90% | 3,323,672 | 174.43M | Jun 29, 2026 |
Top mutual fund holders
| Holder | % held | Shares | Value | Reported |
|---|---|---|---|---|
| VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund | 2.36% | 1,135,375 | 59.58M | Jun 29, 2026 |
| MUTUAL FUND SERIES TRUST-Eventide Healthcare & Life Sciences Fund | 1.81% | 873,492 | 45.84M | Jun 29, 2026 |
| Fidelity Advisor Series VII-Fidelity Advisor Biotechnology Fund | 1.70% | 817,600 | 42.91M | Aug 30, 2026 |
| iShares Trust-iShares Russell 2000 ETF | 1.67% | 805,557 | 42.28M | Sep 29, 2026 |
| Fidelity Select Portfolios-Select Health Care Portfolio | 1.41% | 680,000 | 35.69M | Aug 30, 2026 |
| Fidelity Capital Trust-Fidelity Stock Selector Small Cap Fund | 1.40% | 674,700 | 35.41M | Aug 30, 2026 |
Insiders
| Insider | Relation | Latest transaction | Date | Shares held |
|---|---|---|---|---|
| AZOULAY SALOMON M.D. | Officer | Sale | Aug 3, 2026 | 14,399 |
| BARTRAM RICHARD B | Chief Financial Officer | Stock Award(Grant) | Feb 1, 2026 | 15,000 |
| GORDON CARL L | Director and Beneficial Owner of more than 10% of a Class of Security | Purchase | Feb 17, 2025 | 0 |
| HAWRYLUK P KENT | Chief Executive Officer | Sale | May 5, 2026 | 1,214,440 |
| HERON PATRICK J | Director and Beneficial Owner of more than 10% of a Class of Security | Purchase | Sep 25, 2025 | 0 |
| HOERTER STEVEN L | Chief Executive Officer | Stock Award(Grant) | Aug 2, 2026 | 102,938 |