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 |
|---|---|---|---|---|---|
| Hughes Financial Services, LLC | 1 | $55 | 0.00% | +1 | New |
| SJS Investment Consulting Inc. | 2 | $111 | 0.00% | +2 | New |
| Farther Finance Advisors, LLC | 9 | $497 | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 11 | $607 | 0.00% | +11 | New |
| Silver Grove Financial Group, Inc. | 13 | $718 | 0.00% | +13 | New |
| Essential Partners LLC | 15 | $828 | 0.00% | 00.0% | Unchanged |
| Quarry LP | 18 | $994 | 0.00% | +18 | New |
| Covestor Ltd | 10 | $1.00K | 0.00% | +7+233.3% | Added |
| Fortitude Family Office, LLC | 19 | $1.05K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 19 | $1.05K | 0.00% | +19 | New |
| Cornerstone Financial Management LLC | 34 | $1.88K | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 34 | $1.88K | 0.00% | +34 | New |
| Rothschild Investment LLC | 39 | $2.15K | 0.00% | +15+62.5% | Added |
| EverSource Wealth Advisors, LLC | 48 | $2.65K | 0.00% | +23+92.0% | Added |
| Allworth Financial LP | 48 | $2.65K | 0.00% | −22−31.4% | Reduced |
| Larson Financial Group LLC | 49 | $2.71K | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 54 | $2.98K | 0.00% | +38+237.5% | Added |
| Jones Financial Companies LLLP | 80 | $4.18K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 78 | $4.31K | 0.00% | −101−56.4% | Reduced |
| Parallel Advisors, LLC | 79 | $4.36K | 0.00% | +18+29.5% | Added |
| J.Safra Asset Management Corp | 85 | $4.69K | 0.00% | +85 | New |
| US Bancorp | 108 | $5.96K | 0.00% | −176−62.0% | Reduced |
| Sterling Capital Management LLC | 109 | $6.02K | 0.00% | −840−88.5% | Reduced |
| UMA Financial Services, Inc. | 121 | $6.68K | 0.00% | +12+11.0% | Added |
| Aster Capital Management (DIFC) Ltd | 172 | $9.49K | 0.00% | +172 | New |
| FIL Ltd | 178 | $9.83K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 207 | $11.4K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 224 | $12.4K | 0.00% | −3,000−93.1% | Reduced |
| SRS Capital Advisors, Inc. | 279 | $15.4K | 0.00% | +279 | New |
| Advisor Group Holdings, Inc. | 282 | $15.6K | 0.00% | +13+4.8% | Added |
| GAMMA Investing LLC | 304 | $16.8K | 0.00% | +5+1.7% | Added |
| Kemnay Advisory Services Inc. | 321 | $17.7K | 0.00% | +321 | New |
| KBC Group NV | 810 | $45.0K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 952 | $52.5K | 0.00% | −57−5.6% | Reduced |
| State of Wyoming | 1,055 | $58.2K | 0.01% | +1,055 | New |
| Simplex Trading, LLC | 1,327 | $73.3K | 0.00% | +20+1.5% | Added |
| Royal Bank of Canada | 1,464 | $81.0K | 0.00% | +713+94.9% | Added |
| STRS Ohio | 2,000 | $110.4K | 0.00% | +400+25.0% | Added |
| Nisa Investment Advisors, LLC | 2,013 | $111.1K | 0.00% | +421+26.4% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 2,086 | $115.1K | 0.00% | +1,616+343.8% | Added |
| Mirae Asset Global Investments Co., Ltd. | 2,129 | $117.5K | 0.00% | −213−9.1% | Reduced |
| Ameritas Investment Partners, Inc. | 2,817 | $155.5K | 0.00% | +505+21.8% | Added |
| Tower Research Capital LLC (TRC) | 3,651 | $201.5K | 0.00% | +2,240+158.8% | Added |
| Susquehanna Portfolio Strategies, LLC | 3,800 | $209.8K | 0.00% | +3,800 | New |
| Quantbot Technologies LP | 3,855 | $212.8K | 0.01% | +3,855 | New |
| Goelzer Investment Management, Inc. | 4,000 | $220.8K | 0.01% | −160,172−97.6% | Reduced |
| Pictet Asset Management Holding SA | 4,098 | $226.2K | 0.00% | +4,098 | New |
| Verdad Advisers, LP | 4,574 | $252.5K | 0.24% | +4,574 | New |
| KLP Kapitalforvaltning AS | 4,900 | $270.5K | 0.00% | 00.0% | Unchanged |
| 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 |
| Canada Pension Plan Investment Board | 5,200 | $287.0K | 0.00% | −5,700−52.3% | Reduced |
| Group One Trading, L.P. | 5,231 | $288.8K | 0.01% | −1,020−16.3% | Reduced |
| Blackstone Group Inc. | 5,533 | $305.4K | 0.00% | +5,533 | New |
| ProShare Advisors LLC | 5,622 | $310.3K | 0.00% | +5,622 | New |
| SEI Investments Co | 5,868 | $323.9K | 0.00% | −3,121−34.7% | Reduced |
| Arizona State Retirement System | 5,899 | $325.6K | 0.00% | +5,899 | New |
| Intech Investment Management LLC | 5,951 | $328.5K | 0.00% | −893−13.0% | Reduced |
| Seven Fleet Capital Management LP | 6,000 | $331.2K | 0.05% | +6,000 | New |
| Vanguard Investments Australia, Ltd. | 6,103 | $336.9K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 6,245 | $345.0K | 0.00% | +2,859+84.4% | Added |
| XTX Topco Ltd | 6,392 | $352.8K | 0.00% | −46,818−88.0% | Reduced |
| Rafferty Asset Management, LLC | 6,410 | $353.8K | 0.00% | +6,410 | New |
| Quantinno Capital Management LP | 6,497 | $358.6K | 0.00% | +6,497 | New |
| State of New Jersey Common Pension Fund D | 6,913 | $381.6K | 0.00% | −760−9.9% | Reduced |
| Axq Capital, LP | 7,757 | $428.2K | 0.05% | +7,757 | New |
| DnB Asset Management AS | 7,793 | $430.2K | 0.00% | +7,793 | New |
| ACT Capital Management, LLC | 8,000 | $441.6K | 0.29% | −1,000−11.1% | Reduced |
| Brevan Howard Capital Management LP | 8,602 | $474.8K | 0.01% | +8,602 | New |
| Profund Advisors LLC | 8,812 | $486.4K | 0.01% | +424+5.1% | Added |
| Police & Firemen's Retirement System of New Jersey | 9,154 | $505.3K | 0.00% | +1,634+21.7% | Added |
| China Universal Asset Management Co., Ltd. | 9,175 | $506.5K | 0.03% | +1,207+15.1% | Added |
| Virtus Investment Advisers, Inc. | 9,215 | $508.7K | 0.12% | +84+0.9% | Added |
| State Board of Administration of Florida Retirement System | 9,777 | $539.7K | 0.00% | +9,777 | New |
| BNP Paribas Arbitrage, SA | 9,860 | $544.3K | 0.00% | −524−5.0% | Reduced |
| Fred Alger Management, LLC | 9,877 | $545.2K | 0.00% | +9,877 | New |
| Jupiter Topco LLC | 10,300 | $568.3K | 0.00% | +10,300 | New |
| New York State Common Retirement Fund | 11,000 | $607.2K | 0.00% | +2,000+22.2% | Added |
| HighVista Strategies LLC | 11,634 | $642.2K | 0.15% | +162+1.4% | Added |
| DAFNA Capital Management LLC | 11,809 | $651.9K | 0.12% | −163,656−93.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 14,292 | $788.9K | 0.00% | +967+7.3% | Added |
| Optimize Financial Inc | 14,458 | $798.1K | 0.29% | −50−0.3% | Reduced |
| Sound Capital Solutions LLC | 14,458 | $798.1K | 0.19% | +14,458 | New |
| Vanguard Asset Management, Ltd | 14,752 | $814.3K | 0.00% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 15,971 | $881.6K | 0.00% | −3,291−17.1% | Reduced |
| Alliancebernstein L.P. | 31,000 | $925.4K | 0.00% | +500+1.6% | Added |
| Koa Wealth Management, LLC | 17,113 | $944.6K | 0.64% | −800−4.5% | Reduced |
| Russell Investments Group, Ltd. | 18,162 | $1.00M | 0.00% | +14,306+371.0% | Added |
| MetLife Investment Management | 18,250 | $1.01M | 0.00% | +2,232+13.9% | Added |
| Vanguard Global Advisers, LLC | 18,969 | $1.05M | 0.00% | +2,941+18.3% | Added |
| Cerity Partners LLC | 20,997 | $1.16M | 0.00% | −166−0.8% | Reduced |
| UBS Asset Management Americas Inc | 21,344 | $1.18M | 0.00% | +14,106+194.9% | Added |
| Legal & General Group Plc | 21,583 | $1.19M | 0.00% | +2,225+11.5% | Added |
| AQR Capital Management LLC | 22,591 | $1.25M | 0.00% | −4,796−17.5% | Reduced |
| American Century Companies Inc | 22,680 | $1.25M | 0.00% | +13,954+159.9% | Added |
| California State Teachers Retirement System | 23,376 | $1.29M | 0.00% | +611+2.7% | Added |
| Citigroup Inc | 25,122 | $1.39M | 0.00% | +11,623+86.1% | Added |
| Teachers Retirement System of the State of Kentucky | 25,377 | $1.40M | 0.01% | +25,377 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 25,800 | $1.42M | 0.00% | +25,800 | New |
| Voya Investment Management LLC | 26,132 | $1.44M | 0.00% | +26,132 | New |