MBX Biosciences, Inc.
MBX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001776111
In the last 90 days, MBX Biosciences, Inc. insiders filed 0 open-market purchases and 1 sale; 172 institutions reported holding it in 13F filings for Q2 2026, worth $3.06B in total; no superinvestor holds it.
13F holders, Q1 2025
Institutional positions in MBX Biosciences, Inc. as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 79
- +17 vs. Q4 2024
- Shares held
- 35.7M
- +2.74M (+8.3%) vs. Q4 2024
- Total value
- $263.2M
- −$343.0M (−56.6%) vs. Q4 2024
- New holders
- 27
- 24 more added
- Sold out
- 10
- 15 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MBX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 172 | $3.06B |
| Q1 2026 | 157 | $1.57B |
| Q4 2025 | 138 | $1.53B |
| Q3 2025 | 118 | $836.4M |
| Q2 2025 | 88 | $420.3M |
| Q1 2025 | 79 | $263.2M |
| Q4 2024 | 63 | $606.5M |
| Q3 2024 | 45 | $784.1M |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2025
Shares, value and share of portfolio for each institution holding MBX Biosciences, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 5,985,347 | $44.2M | 2.02% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 4,002,887 | $29.5M | 0.71% | +190,672+5.0% | Added |
| NEA Management Company, LLC | 3,614,486 | $26.7M | 2.05% | 00.0% | Unchanged |
| Deep Track Capital, LP | 3,018,935 | $22.3M | 0.72% | 00.0% | Unchanged |
| Wellington Management Group LLP | 2,638,521 | $19.5M | 0.00% | −271,118−9.3% | Reduced |
| NVP Associates, LLC | 2,136,335 | $15.8M | 14.05% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 1,579,207 | $11.7M | 0.11% | −2,553−0.2% | Reduced |
| Ra Capital Management, L.P. | 1,511,334 | $11.2M | 0.19% | 00.0% | Unchanged |
| EcoR1 Capital, LLC | 1,259,273 | $9.29M | 0.55% | 00.0% | Unchanged |
| MPM Oncology Impact Management LP | 1,132,950 | $8.36M | 1.44% | +1,132,950 | New |
| Price T Rowe Associates Inc | 1,100,916 | $8.13M | 0.00% | −60,611−5.2% | Reduced |
| Woodline Partners LP | 877,461 | $6.48M | 0.04% | +268,740+44.1% | Added |
| BlackRock, Inc. | 783,042 | $5.78M | 0.00% | +55,090+7.6% | Added |
| Cormorant Asset Management, LP | 700,000 | $5.17M | 0.39% | 00.0% | Unchanged |
| Vanguard Group Inc | 665,563 | $4.91M | 0.00% | −5,385−0.8% | Reduced |
| TCG Crossover Management, LLC | 650,000 | $4.80M | 0.65% | 00.0% | Unchanged |
| Franklin Resources Inc | 369,315 | $2.73M | 0.00% | +150.0% | Added |
| Parkman Healthcare Partners LLC | 328,323 | $2.42M | 0.29% | +158,323+93.1% | Added |
| Geode Capital Management, LLC | 274,458 | $2.03M | 0.00% | +8,755+3.3% | Added |
| Opaleye Management Inc. | 250,000 | $1.84M | 0.41% | +250,000 | New |
| JPMorgan Chase & Co | 201,235 | $1.49M | 0.00% | +192,129+2,109.9% | Added |
| Schonfeld Strategic Advisors LLC | 200,642 | $1.48M | 0.01% | +129,142+180.6% | Added |
| Platinum Investment Management Ltd | 185,932 | $1.37M | 0.08% | +23,842+14.7% | Added |
| State Street Corp | 177,220 | $1.31M | 0.00% | +34,571+24.2% | Added |
| Affinity Asset Advisors, LLC | 175,000 | $1.29M | 0.20% | +175,000 | New |
| Millennium Management LLC | 170,440 | $1.26M | 0.00% | −163,202−48.9% | Reduced |
| TD Asset Management Inc | 151,504 | $1.12M | 0.00% | +114,904+313.9% | Added |
| Exome Asset Management LLC | 133,113 | $982.4K | 0.88% | +133,113 | New |
| Morgan Stanley | 114,610 | $845.8K | 0.00% | +90,775+380.8% | Added |
| Marshall Wace, LLP | 111,211 | $820.7K | 0.00% | +85,311+329.4% | Added |
| Point72 Asset Management, L.P. | 110,482 | $815.4K | 0.00% | +110,482 | New |
| Citigroup Inc | 97,328 | $718.3K | 0.00% | +88,464+998.0% | Added |
| StemPoint Capital LP | 96,615 | $713.0K | 0.23% | +96,615 | New |
| Northern Trust Corp | 96,507 | $712.2K | 0.00% | +5,825+6.4% | Added |
| Charles Schwab Investment Management Inc | 94,546 | $697.7K | 0.00% | +1,235+1.3% | Added |
| Manufacturers Life Insurance Company, The | 50,110 | $369.8K | 0.00% | +435+0.9% | Added |
| Aaron Wealth Advisors | 50,000 | $369.0K | 0.04% | +50,000 | New |
| Shay Capital LLC | 49,133 | $362.6K | 0.11% | +49,133 | New |
| FMR LLC | 44,240 | $326.5K | 0.00% | +19,667+80.0% | Added |
| Prelude Capital Management, LLC | 40,225 | $296.9K | 0.03% | +40,225 | New |
| Two Sigma Investments, LP | 33,833 | $249.7K | 0.00% | +33,833 | New |
| Walleye Capital LLC | 32,490 | $239.8K | 0.00% | +32,490 | New |
| BNP Paribas Arbitrage, SA | 30,916 | $228.2K | 0.00% | +29,430+1,980.5% | Added |
| Jump Financial, LLC | 28,996 | $214.0K | 0.00% | +28,996 | New |
| Bank of America Corp | 28,090 | $207.3K | 0.00% | +12,031+74.9% | Added |
| UBS Group AG | 27,499 | $202.9K | 0.00% | −18,402−40.1% | Reduced |
| Alps Advisors Inc | 26,034 | $192.1K | 0.00% | −986−3.6% | Reduced |
| Bank of New York Mellon Corp | 23,910 | $176.5K | 0.00% | −40.0% | Reduced |
| Squarepoint Ops LLC | 20,098 | $148.3K | 0.00% | +20,098 | New |
| Verition Fund Management LLC | 19,815 | $146.2K | 0.00% | +19,815 | New |
| Koa Wealth Management, LLC | 19,396 | $143.1K | 0.12% | +19,396 | New |
| Goldman Sachs Group Inc | 15,168 | $111.9K | 0.00% | −19,659−56.4% | Reduced |
| Nuveen, LLC | 14,471 | $106.8K | 0.00% | +14,471 | New |
| Susquehanna International Group, LLP | 13,660 | $100.8K | 0.00% | +13,660 | New |
| Gsa Capital Partners LLP | 12,369 | $91.0K | 0.01% | +12,369 | New |
| Wealthedge Investment Advisors, LLC | 11,864 | $87.6K | 0.04% | +11,864 | New |
| Barclays PLC | 11,818 | $87.2K | 0.00% | −5,615−32.2% | Reduced |
| Intech Investment Management LLC | 10,728 | $79.2K | 0.00% | +10,728 | New |
| Deutsche Bank AG | 8,762 | $64.7K | 0.00% | +4,424+102.0% | Added |
| Rhumbline Advisers | 8,712 | $64.3K | 0.00% | −760−8.0% | Reduced |
| Virtus Investment Advisers, Inc. | 8,006 | $59.1K | 0.02% | +8,006 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 6,647 | $49.1K | 0.00% | +312+4.9% | Added |
| Wells Fargo & Company | 5,977 | $44.1K | 0.00% | +133+2.3% | Added |
| Corebridge Financial, Inc. | 5,511 | $40.7K | 0.00% | −82−1.5% | Reduced |
| New York State Common Retirement Fund | 4,300 | $31.7K | 0.00% | +4,300 | New |
| Police & Firemen's Retirement System of New Jersey | 2,143 | $15.8K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,365 | $10.1K | 0.00% | +562+70.0% | Added |
| Ameritas Investment Partners, Inc. | 1,177 | $8.69K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,107 | $8.17K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 832 | $6.14K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 700 | $5.17K | 0.00% | −1,400−66.7% | Reduced |
| Royal Bank of Canada | 635 | $4.00K | 0.00% | −198−23.8% | Reduced |
| Amalgamated Bank | 384 | $3.00K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 330 | $2.44K | 0.00% | +330 | New |
| CWM, LLC | 137 | $1.00K | 0.00% | +137 | New |
| Sterling Capital Management LLC | 91 | $672 | 0.00% | −70−43.5% | Reduced |
| GAMMA Investing LLC | 20 | $148 | 0.00% | +20 | New |
| EverSource Wealth Advisors, LLC | 9 | $66 | 0.00% | +9 | New |
| True Wealth Design, LLC | 3 | $23 | 0.00% | +3 | New |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −220,330−100.0% | Sold out |
| Alyeska Investment Group, L.P. | 0 | $0 | 0.00% | −174,700−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −26,708−100.0% | Sold out |
| Norges Bank | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Saturn V Capital Management LLC | 0 | $0 | 0.00% | −18,000−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −12,743−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −7,230−100.0% | Sold out |
| Sandia Investment Management LP | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −3,468−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −400−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |