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