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, Q2 2025
Institutional positions in MBX Biosciences, Inc. as of Jun 30, 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
- 88
- +9 vs. Q1 2025
- Shares held
- 36.8M
- +1.17M (+3.3%) vs. Q1 2025
- Total value
- $420.3M
- +$157.1M (+59.7%) vs. Q1 2025
- New holders
- 21
- 40 more added
- Sold out
- 12
- 14 more reduced
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding MBX Biosciences, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 5,985,347 | $68.3M | 2.73% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 4,002,887 | $45.7M | 1.15% | 00.0% | Unchanged |
| NEA Management Company, LLC | 3,614,486 | $41.2M | 3.10% | 00.0% | Unchanged |
| Wellington Management Group LLP | 2,266,628 | $25.9M | 0.00% | −371,893−14.1% | Reduced |
| Deep Track Capital, LP | 2,188,592 | $25.0M | 0.80% | −830,343−27.5% | Reduced |
| NVP Associates, LLC | 2,136,335 | $24.4M | 13.24% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 1,571,906 | $17.9M | 0.14% | −7,301−0.5% | Reduced |
| Price T Rowe Associates Inc | 1,346,910 | $15.4M | 0.00% | +245,994+22.3% | Added |
| MPM Oncology Impact Management LP | 1,294,416 | $14.8M | 2.56% | +161,466+14.3% | Added |
| EcoR1 Capital, LLC | 1,149,794 | $13.1M | 0.78% | −109,479−8.7% | Reduced |
| Vanguard Group Inc | 1,043,684 | $11.9M | 0.00% | +378,121+56.8% | Added |
| BlackRock, Inc. | 1,011,546 | $11.5M | 0.00% | +228,504+29.2% | Added |
| Point72 Asset Management, L.P. | 973,787 | $11.1M | 0.03% | +863,305+781.4% | Added |
| Woodline Partners LP | 901,103 | $10.3M | 0.05% | +23,642+2.7% | Added |
| Parkman Healthcare Partners LLC | 871,933 | $9.95M | 1.15% | +543,610+165.6% | Added |
| Millennium Management LLC | 766,840 | $8.75M | 0.01% | +596,400+349.9% | Added |
| Cormorant Asset Management, LP | 700,000 | $7.99M | 0.59% | 00.0% | Unchanged |
| TCG Crossover Management, LLC | 650,000 | $7.42M | 0.85% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 631,413 | $7.20M | 0.05% | +430,771+214.7% | Added |
| Franklin Resources Inc | 494,852 | $5.65M | 0.00% | +125,537+34.0% | Added |
| Ra Capital Management, L.P. | 377,841 | $4.31M | 0.07% | −1,133,493−75.0% | Reduced |
| Geode Capital Management, LLC | 348,447 | $3.98M | 0.00% | +73,989+27.0% | Added |
| State Street Corp | 265,119 | $3.03M | 0.00% | +87,899+49.6% | Added |
| Sio Capital Management, LLC | 241,000 | $2.75M | 1.10% | +241,000 | New |
| Opaleye Management Inc. | 239,319 | $2.73M | 0.55% | −10,681−4.3% | Reduced |
| Sectoral Asset Management Inc | 191,825 | $2.19M | 1.45% | +191,825 | New |
| TD Asset Management Inc | 171,304 | $1.95M | 0.00% | +19,800+13.1% | Added |
| StemPoint Capital LP | 141,021 | $1.61M | 0.52% | +44,406+46.0% | Added |
| Northern Trust Corp | 115,594 | $1.32M | 0.00% | +19,087+19.8% | Added |
| Platinum Investment Management Ltd | 112,743 | $1.29M | 0.09% | −73,189−39.4% | Reduced |
| Charles Schwab Investment Management Inc | 107,483 | $1.23M | 0.00% | +12,937+13.7% | Added |
| Manufacturers Life Insurance Company, The | 87,097 | $993.8K | 0.00% | +36,987+73.8% | Added |
| Walleye Capital LLC | 70,333 | $802.5K | 0.01% | +37,843+116.5% | Added |
| Exome Asset Management LLC | 63,076 | $719.7K | 0.59% | −70,037−52.6% | Reduced |
| FMR LLC | 61,333 | $699.8K | 0.00% | +17,093+38.6% | Added |
| Barclays PLC | 58,541 | $668.0K | 0.00% | +46,723+395.4% | Added |
| Aaron Wealth Advisors | 50,000 | $570.5K | 0.06% | 00.0% | Unchanged |
| Resolute Capital Asset Partners LLC | 49,670 | $566.7K | 0.30% | +49,670 | New |
| Bank of America Corp | 42,387 | $483.6K | 0.00% | +14,297+50.9% | Added |
| Bank of New York Mellon Corp | 38,032 | $433.9K | 0.00% | +14,122+59.1% | Added |
| Rockefeller Capital Management L.P. | 34,135 | $389.5K | 0.00% | +34,135 | New |
| Koa Wealth Management, LLC | 31,752 | $362.3K | 0.29% | +12,356+63.7% | Added |
| UBS Group AG | 30,967 | $353.3K | 0.00% | +3,468+12.6% | Added |
| Bridgeway Capital Management, LLC | 29,200 | $333.2K | 0.01% | +29,200 | New |
| Susquehanna International Group, LLP | 27,632 | $315.3K | 0.00% | +13,972+102.3% | Added |
| Morgan Stanley | 24,008 | $273.9K | 0.00% | −90,602−79.1% | Reduced |
| Rhumbline Advisers | 23,662 | $270.0K | 0.00% | +14,950+171.6% | Added |
| Nuveen, LLC | 22,143 | $252.7K | 0.00% | +7,672+53.0% | Added |
| Alps Advisors Inc | 18,048 | $205.9K | 0.00% | −7,986−30.7% | Reduced |
| AQR Capital Management LLC | 18,001 | $205.4K | 0.00% | +18,001 | New |
| Prelude Capital Management, LLC | 15,617 | $178.2K | 0.02% | −24,608−61.2% | Reduced |
| Intech Investment Management LLC | 14,271 | $162.8K | 0.00% | +3,543+33.0% | Added |
| XTX Topco Ltd | 11,861 | $135.3K | 0.01% | +11,861 | New |
| MetLife Investment Management | 11,018 | $125.7K | 0.00% | +11,018 | New |
| Wells Fargo & Company | 10,943 | $124.9K | 0.00% | +4,966+83.1% | Added |
| Alliancebernstein L.P. | 10,500 | $119.8K | 0.00% | +10,500 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 9,329 | $106.4K | 0.00% | +2,682+40.3% | Added |
| Virtus Investment Advisers, Inc. | 8,772 | $100.1K | 0.03% | +766+9.6% | Added |
| Deutsche Bank AG | 8,762 | $100.0K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 8,184 | $93.4K | 0.00% | −193,051−95.9% | Reduced |
| Quarry LP | 8,000 | $91.3K | 0.02% | +8,000 | New |
| Citigroup Inc | 5,723 | $65.3K | 0.00% | −91,605−94.1% | Reduced |
| New York State Common Retirement Fund | 4,300 | $49.1K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 2,143 | $24.5K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,110 | $24.1K | 0.00% | +745+54.6% | Added |
| CWM, LLC | 1,802 | $21.0K | 0.00% | +1,665+1,215.3% | Added |
| Nisa Investment Advisors, LLC | 1,592 | $18.2K | 0.00% | +1,592 | New |
| Legal & General Group Plc | 1,551 | $17.7K | 0.00% | +444+40.1% | Added |
| BNP Paribas Arbitrage, SA | 1,329 | $15.2K | 0.00% | −29,587−95.7% | Reduced |
| Royal Bank of Canada | 1,298 | $15.0K | 0.00% | +663+104.4% | Added |
| Ameritas Investment Partners, Inc. | 1,177 | $13.4K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 1,064 | $12.1K | 0.00% | +232+27.9% | Added |
| Raymond James Financial Inc | 761 | $8.68K | 0.00% | +761 | New |
| STRS Ohio | 700 | $7.99K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 460 | $5.25K | 0.00% | +369+405.5% | Added |
| Amalgamated Bank | 384 | $4.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 411 | $4.00K | 0.00% | +411 | New |
| US Bancorp | 337 | $3.85K | 0.00% | +7+2.1% | Added |
| GAMMA Investing LLC | 299 | $3.41K | 0.00% | +279+1,395.0% | Added |
| UMA Financial Services, Inc. | 109 | $1.24K | 0.00% | +109 | New |
| Parallel Advisors, LLC | 108 | $1.23K | 0.00% | +108 | New |
| Signaturefd, LLC | 101 | $1.15K | 0.00% | +101 | New |
| Rise Advisors, LLC | 68 | $776 | 0.00% | +68 | New |
| Russell Investments Group, Ltd. | 35 | $399 | 0.00% | +35 | New |
| EverSource Wealth Advisors, LLC | 29 | $331 | 0.00% | +20+222.2% | Added |
| Allworth Financial LP | 25 | $286 | 0.00% | +25 | New |
| Rothschild Investment LLC | 20 | $228 | 0.00% | +20 | New |
| Essential Partners LLC | 2 | $23 | 0.00% | +2 | New |
| Affinity Asset Advisors, LLC | 0 | $0 | 0.00% | −175,000−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −111,211−100.0% | Sold out |
| Shay Capital LLC | 0 | $0 | 0.00% | −49,133−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −33,833−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −28,996−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −20,098−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −19,815−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −15,168−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −12,369−100.0% | Sold out |
| Wealthedge Investment Advisors, LLC | 0 | $0 | 0.00% | −11,864−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −5,511−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |