Who Owns MBX?
MBX Biosciences, Inc. Common Stock — Institutional Ownership & 13F Holdings
$30.11
+1.50 (+5.26%)
Market Cap
$1.1B
Shares Outstanding
33,593,129
Institutional Holders
79
Total Inst. Value
$249.7M
% of Float Held
244.1%
QoQ Holder Change
—
Institutional data as of Q1 2025
Top 10 Institutional Holders(Q1 2025)
| # | Fund | Value | Shares |
|---|---|---|---|
| 1 | Frazier Life Sciences Management, L.P. | $44.2M | 5,985,347 |
| 2 | ORBIMED ADVISORS LLC | $29.5M | 4,002,887 |
| 3 | NEA Management Company, LLC | $26.7M | 3,614,486 |
| 4 | Deep Track Capital, LP | $22.3M | 3,018,935 |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | $19.5M | 2,638,521 |
| 6 | NVP Associates, LLC | $15.8M | 2,136,335 |
| 7 | DRIEHAUS CAPITAL MANAGEMENT LLC | $11.7M | 1,579,207 |
| 8 | EcoR1 Capital, LLC | $9.3M | 1,259,273 |
| 9 | MPM BioImpact LLC | $8.4M | 1,132,950 |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | $8.1M | 1,100,916 |
Biggest Buyers & Sellers This Quarter
Top Buyers
| Fund | Shares Added | Value |
|---|---|---|
| ORBIMED ADVISORS LLC | +191K | $29.5M |
| Woodline Partners LP | +269K | $6.5M |
| BlackRock, Inc. | +55K | $5.8M |
| FRANKLIN RESOURCES INC | +15 | $2.7M |
| Parkman Healthcare Partners LLC | +158K | $2.4M |
Top Sellers
| Fund | Shares Removed | Value |
|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP | -271K | $19.5M |
| MILLENNIUM MANAGEMENT LLC | -163K | $1K |
| PRICE T ROWE ASSOCIATES INC /MD/ | -61K | $8.1M |
| GOLDMAN SACHS GROUP INC | -20K | $112K |
| UBS Group AG | -18K | $203K |
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Frequently Asked Questions
How many institutional investors hold MBX?
As of Q1 2025, 79 institutional investors report holding MBX (MBX Biosciences, Inc. Common Stock) in their 13F filings.
What percentage of MBX Biosciences, Inc. Common Stock is owned by institutions?
Institutional investors hold approximately 244.1% of MBX Biosciences, Inc. Common Stock's float as reported in SEC 13F filings.
Which hedge fund owns the most MBX?
The largest institutional holder of MBX is Frazier Life Sciences Management, L.P. with $44.2M in shares.
Are institutions buying or selling MBX?
This quarter, 28 institutions opened new positions in MBX and 11 closed their positions.
What is 13F institutional ownership?
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100M in qualifying assets. It discloses their US equity holdings, providing transparency into what the largest investors are buying and selling.
How often is institutional ownership data updated?
13F filings are due 45 days after each calendar quarter end (May 15, Aug 14, Nov 14, Feb 14). Data is updated on HedgeTrace as new filings are processed.