MBX BiosciencesMBX
13F holders, Q4 2024 (December 31)63holders +18
31new positions
15sold out
2famous investors
$18.41avg. 13F price*
At the end of Q4 2024, 63 institutions reported holding MBX Biosciences Inc. (MBX) in their 13F filings, up 18 from Q3 2024. 31 opened new positions and 15 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($110.3M), Orbimed Advisors LLC ($70.3M) and NEA Management Company, LLC ($66.6M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- MBX Biosciences Inc.
- CUSIP
- 55287L101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 31 | $28.9M |
| Exits | 15 | $9.4M |
All 13F filers, Q3 2024 → Q4 2024: 3,323,038 shares bought and 689,308 shares sold, net +2,633,730 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 63 holders
| Frazier Life Sciences Management, L.P. | 4.59% | No change | 5,985,347 | $110.3M |
| Orbimed Advisors LLC | 1.46% | No change | 3,812,215 | $70.3M |
| NEA Management Company, LLC | 3.76% | No change | 3,614,486 | $66.6M |
| Deep Track Capital, LP | 2.09% | No change | 3,018,935 | $55.6M |
| Wellington Management Group LLP | 0.01% | Reduce -1.0% | 2,909,639 | $53.0M |
| NVP Associates, LLC | 21.06% | No change | 2,136,335 | $39.4M |
| Driehaus Capital Management LLC | 0.24% | Add +61.2% | 1,581,760 | $29.2M |
| Ra Capital Management, L.P. | 0.37% | No change | 1,511,334 | $27.9M |
| EcoR1 Capital, LLC | 0.93% | Add +7.1% | 1,259,273 | $23.2M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -2.6% | 1,161,527 | $21.4M |
| BlackRock, Inc. | 0.00% | New | 727,952 | $13.4M |
| Cormorant Asset Management, LP | 0.71% | No change | 700,000 | $12.9M |
| Vanguard Group Inc. | 0.00% | Add +1241.9% | 670,948 | $12.4M |
| TCG Crossover Management, LLC | 1.17% | No change | 650,000 | $12.0M |
| Woodline Partners LP | 0.08% | Add +17.1% | 608,721 | $11.2M |
| Franklin Resources Inc. | 0.00% | Reduce -17.9% | 369,300 | $6.8M |
| Millennium Management | 0.01% | Reduce -24.2% | 333,642 | $6.1M |
| Geode Capital Management, LLC | 0.00% | Add +1093.2% | 265,703 | $4.9M |
| Citadel Advisors | 0.00% | Add +62.5% | 220,330 | $4.1M |
| Alyeska Investment Group, L.P. | 0.01% | Reduce -22.4% | 174,700 | $3.2M |
| Parkman Healthcare Partners LLC | 0.42% | New | 170,000 | $3.1M |
| Platinum Investment Management Ltd. | 0.18% | Add +8.1% | 162,090 | $3.0M |
| State Street Corp. | 0.00% | New | 142,649 | $2.6M |
| Charles Schwab Investment Management Inc. | 0.00% | New | 93,311 | $1.7M |
| Northern Trust Corp. | 0.00% | New | 90,682 | $1.7M |
| Schonfeld Strategic Advisors LLC | 0.01% | New | 71,500 | $1.3M |
| Manufacturers Life Insurance Company, The | 0.00% | Add +7.5% | 49,675 | $916K |
| UBS Group AG | 0.00% | New | 45,901 | $846K |
| TD Asset Management Inc | 0.00% | Reduce -18.3% | 36,600 | $675K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -31.7% | 34,827 | $642K |
| Alps Advisors Inc. | 0.00% | New | 27,020 | $498K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 26,708 | $492K |
| Marshall Wace, LLP | 0.00% | Add +115.8% | 25,900 | $477K |
| Norges Bank | 0.00% | No change | 25,000 | $461K |
| FMR LLC | 0.00% | New | 24,573 | $453K |
| Bank of New York Mellon Corp | 0.00% | New | 23,914 | $441K |
| Morgan Stanley | 0.00% | New | 23,835 | $439K |
| Saturn V Capital Management LP | 0.13% | New | 18,000 | $332K |
| Barclays PLC | 0.00% | Add +6.3% | 17,433 | $321K |
| Bank of America Corp. | 0.00% | New | 16,059 | $296K |
| Nuveen Asset Management, LLC | 0.00% | New | 14,471 | $267K |
| BIT Capital GmbH | 0.02% | New | 12,743 | $235K |
| Rhumbline Advisers | 0.00% | New | 9,472 | $175K |
| JPMorgan Chase & Co. | 0.00% | New | 9,106 | $168K |
| Citigroup Inc. | 0.00% | New | 8,864 | $163K |
| MetLife Investment Management, LLC | 0.00% | New | 7,230 | $133K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | New | 6,335 | $117K |
| Wells Fargo & Company | 0.00% | New | 5,844 | $108K |
| Corebridge Financial, Inc. | 0.00% | New | 5,593 | $103K |
| Sandia Investment Management LP | 0.18% | No change | 5,000 | $92K |
| Deutsche Bank AG | 0.00% | New | 4,338 | $80K |
| Virtus Advisers, LLC | 0.03% | New | 3,468 | $64K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | — | 2,143 | $39K |
| STRS Ohio | 0.00% | New | 2,100 | $39K |
| BNP Paribas Financial Markets | 0.00% | New | 1,486 | $27K |
| Ameritas Investment Partners, Inc. | 0.00% | New | 1,177 | $22K |
| Legal & General Group Plc | 0.00% | Reduce -77.9% | 1,107 | $20K |
| Royal Bank of Canada | 0.00% | New | 833 | $16K |
| California State Teachers Retirement System | 0.00% | New | 832 | $15K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +421.4% | 803 | $15K |
| R Squared Ltd | 0.01% | — | 400 | $7K |
| Amalgamated Bank | 0.00% | New | 384 | $7K |
| Sterling Capital Management LLC | 0.00% | New | 161 | $3K |
"% of holder's portfolio" is MBX's weight in each manager's 13F, not the share of MBX Biosciences Inc. the manager owns.