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 2026
Institutional positions in MBX Biosciences, Inc. as of Jun 30, 2026. 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
- 172
- +17 vs. Q1 2026
- Shares held
- 55.5M
- +2.95M (+5.6%) vs. Q1 2026
- Total value
- $3.06B
- +$1.49B (+95.3%) vs. Q1 2026
- New holders
- 38
- 64 more added
- Sold out
- 21
- 49 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding MBX Biosciences, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| China Universal Asset Management Co., Ltd. | 9,175 | $506.5K | 0.03% | +1,207+15.1% | Added |
| Police & Firemen's Retirement System of New Jersey | 9,154 | $505.3K | 0.00% | +1,634+21.7% | Added |
| Profund Advisors LLC | 8,812 | $486.4K | 0.01% | +424+5.1% | Added |
| Brevan Howard Capital Management LP | 8,602 | $474.8K | 0.01% | +8,602 | New |
| ACT Capital Management, LLC | 8,000 | $441.6K | 0.29% | −1,000−11.1% | Reduced |
| DnB Asset Management AS | 7,793 | $430.2K | 0.00% | +7,793 | New |
| Axq Capital, LP | 7,757 | $428.2K | 0.05% | +7,757 | New |
| State of New Jersey Common Pension Fund D | 6,913 | $381.6K | 0.00% | −760−9.9% | Reduced |
| Quantinno Capital Management LP | 6,497 | $358.6K | 0.00% | +6,497 | New |
| Rafferty Asset Management, LLC | 6,410 | $353.8K | 0.00% | +6,410 | New |
| XTX Topco Ltd | 6,392 | $352.8K | 0.00% | −46,818−88.0% | Reduced |
| SG Americas Securities, LLC | 6,245 | $345.0K | 0.00% | +2,859+84.4% | Added |
| Vanguard Investments Australia, Ltd. | 6,103 | $336.9K | 0.00% | 00.0% | Unchanged |
| Seven Fleet Capital Management LP | 6,000 | $331.2K | 0.05% | +6,000 | New |
| Intech Investment Management LLC | 5,951 | $328.5K | 0.00% | −893−13.0% | Reduced |
| Arizona State Retirement System | 5,899 | $325.6K | 0.00% | +5,899 | New |
| SEI Investments Co | 5,868 | $323.9K | 0.00% | −3,121−34.7% | Reduced |
| ProShare Advisors LLC | 5,622 | $310.3K | 0.00% | +5,622 | New |
| Blackstone Group Inc. | 5,533 | $305.4K | 0.00% | +5,533 | New |
| Group One Trading, L.P. | 5,231 | $288.8K | 0.01% | −1,020−16.3% | Reduced |
| Canada Pension Plan Investment Board | 5,200 | $287.0K | 0.00% | −5,700−52.3% | Reduced |
| Toroso Investments, LLC | 5,010 | $276.6K | 0.00% | −3,867−43.6% | Reduced |
| Tema ETFs LLC | 5,010 | $276.6K | 0.01% | −3,867−43.6% | Reduced |
| KLP Kapitalforvaltning AS | 4,900 | $270.5K | 0.00% | 00.0% | Unchanged |
| Verdad Advisers, LP | 4,574 | $252.5K | 0.24% | +4,574 | New |
| Pictet Asset Management Holding SA | 4,098 | $226.2K | 0.00% | +4,098 | New |
| Goelzer Investment Management, Inc. | 4,000 | $220.8K | 0.01% | −160,172−97.6% | Reduced |
| Quantbot Technologies LP | 3,855 | $212.8K | 0.01% | +3,855 | New |
| Susquehanna Portfolio Strategies, LLC | 3,800 | $209.8K | 0.00% | +3,800 | New |
| Tower Research Capital LLC (TRC) | 3,651 | $201.5K | 0.00% | +2,240+158.8% | Added |
| Ameritas Investment Partners, Inc. | 2,817 | $155.5K | 0.00% | +505+21.8% | Added |
| Mirae Asset Global Investments Co., Ltd. | 2,129 | $117.5K | 0.00% | −213−9.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 2,086 | $115.1K | 0.00% | +1,616+343.8% | Added |
| Nisa Investment Advisors, LLC | 2,013 | $111.1K | 0.00% | +421+26.4% | Added |
| STRS Ohio | 2,000 | $110.4K | 0.00% | +400+25.0% | Added |
| Royal Bank of Canada | 1,464 | $81.0K | 0.00% | +713+94.9% | Added |
| Simplex Trading, LLC | 1,327 | $73.3K | 0.00% | +20+1.5% | Added |
| State of Wyoming | 1,055 | $58.2K | 0.01% | +1,055 | New |
| GF Fund Management Co. Ltd. | 952 | $52.5K | 0.00% | −57−5.6% | Reduced |
| KBC Group NV | 810 | $45.0K | 0.00% | 00.0% | Unchanged |
| Kemnay Advisory Services Inc. | 321 | $17.7K | 0.00% | +321 | New |
| GAMMA Investing LLC | 304 | $16.8K | 0.00% | +5+1.7% | Added |
| Advisor Group Holdings, Inc. | 282 | $15.6K | 0.00% | +13+4.8% | Added |
| SRS Capital Advisors, Inc. | 279 | $15.4K | 0.00% | +279 | New |
| Rockefeller Capital Management L.P. | 224 | $12.4K | 0.00% | −3,000−93.1% | Reduced |
| The PNC Financial Services Group, Inc. | 207 | $11.4K | 0.00% | 00.0% | Unchanged |
| FIL Ltd | 178 | $9.83K | 0.00% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 172 | $9.49K | 0.00% | +172 | New |
| UMA Financial Services, Inc. | 121 | $6.68K | 0.00% | +12+11.0% | Added |
| Sterling Capital Management LLC | 109 | $6.02K | 0.00% | −840−88.5% | Reduced |
| US Bancorp | 108 | $5.96K | 0.00% | −176−62.0% | Reduced |
| J.Safra Asset Management Corp | 85 | $4.69K | 0.00% | +85 | New |
| Parallel Advisors, LLC | 79 | $4.36K | 0.00% | +18+29.5% | Added |
| Signaturefd, LLC | 78 | $4.31K | 0.00% | −101−56.4% | Reduced |
| Jones Financial Companies LLLP | 80 | $4.18K | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 54 | $2.98K | 0.00% | +38+237.5% | Added |
| Larson Financial Group LLC | 49 | $2.71K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 48 | $2.65K | 0.00% | −22−31.4% | Reduced |
| EverSource Wealth Advisors, LLC | 48 | $2.65K | 0.00% | +23+92.0% | Added |
| Rothschild Investment LLC | 39 | $2.15K | 0.00% | +15+62.5% | Added |
| Cornerstone Financial Management LLC | 34 | $1.88K | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 34 | $1.88K | 0.00% | +34 | New |
| Fortitude Family Office, LLC | 19 | $1.05K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 19 | $1.05K | 0.00% | +19 | New |
| Covestor Ltd | 10 | $1.00K | 0.00% | +7+233.3% | Added |
| Quarry LP | 18 | $994 | 0.00% | +18 | New |
| Essential Partners LLC | 15 | $828 | 0.00% | 00.0% | Unchanged |
| Silver Grove Financial Group, Inc. | 13 | $718 | 0.00% | +13 | New |
| National Bank of Canada | 11 | $607 | 0.00% | +11 | New |
| Farther Finance Advisors, LLC | 9 | $497 | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 2 | $111 | 0.00% | +2 | New |
| Hughes Financial Services, LLC | 1 | $55 | 0.00% | +1 | New |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −932,833−100.0% | Sold out |
| StemPoint Capital LP | 0 | $0 | 0.00% | −499,469−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −97,215−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −71,028−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −57,322−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −28,087−100.0% | Sold out |
| Swiss Life Asset Management Ltd | 0 | $0 | 0.00% | −12,130−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −17,380−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −17,187−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −12,700−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −10,222−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −10,155−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −8,823−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −7,951−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −7,500−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −5,600−100.0% | Sold out |
| Cygnus Capital Advisors, LLC | 0 | $0 | 0.00% | −1,800−100.0% | Sold out |
| Versant Capital Management, Inc | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |