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, Q4 2025
Institutional positions in MBX Biosciences, Inc. as of Dec 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
- 138
- +20 vs. Q3 2025
- Shares held
- 48.4M
- +638.7K (+1.3%) vs. Q3 2025
- Total value
- $1.53B
- +$690.9M (+82.6%) vs. Q3 2025
- New holders
- 45
- 53 more added
- Sold out
- 25
- 25 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding MBX Biosciences, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| IFP Advisors, Inc | 1 | $32 | 0.00% | +1 | New |
| True Wealth Design, LLC | 2 | $64 | 0.00% | +2 | New |
| SBI Securities Co., Ltd. | 9 | $284 | 0.00% | +9 | New |
| Farther Finance Advisors, LLC | 10 | $315 | 0.00% | −318−97.0% | Reduced |
| Essential Partners LLC | 15 | $473 | 0.00% | +13+650.0% | Added |
| Global Retirement Partners, LLC | 19 | $599 | 0.00% | +19 | New |
| Rothschild Investment LLC | 24 | $757 | 0.00% | +4+20.0% | Added |
| EverSource Wealth Advisors, LLC | 25 | $789 | 0.00% | +2+8.7% | Added |
| Cornerstone Financial Management LLC | 34 | $1.07K | 0.00% | +34 | New |
| Allworth Financial LP | 52 | $1.64K | 0.00% | +27+108.0% | Added |
| Parallel Advisors, LLC | 61 | $1.92K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 80 | $2.52K | 0.00% | +80 | New |
| UBS Asset Management Americas Inc | 100 | $3.15K | 0.00% | +100 | New |
| UMA Financial Services, Inc. | 109 | $3.44K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 150 | $5.00K | 0.00% | +150 | New |
| Signaturefd, LLC | 179 | $5.65K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 196 | $6.18K | 0.00% | −56−22.2% | Reduced |
| Aster Capital Management (DIFC) Ltd | 265 | $8.36K | 0.00% | +265 | New |
| GAMMA Investing LLC | 299 | $9.43K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 312 | $9.84K | 0.00% | −25−7.4% | Reduced |
| STRS Ohio | 700 | $22.1K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 882 | $27.8K | 0.00% | +882 | New |
| Amalgamated Bank | 895 | $28.0K | 0.00% | +511+133.1% | Added |
| Royal Bank of Canada | 1,532 | $49.0K | 0.00% | +572+59.6% | Added |
| Nisa Investment Advisors, LLC | 1,592 | $50.2K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 1,641 | $51.8K | 0.00% | +583+55.1% | Added |
| California State Teachers Retirement System | 1,754 | $55.3K | 0.00% | +689+64.7% | Added |
| CWM, LLC | 1,784 | $56.0K | 0.00% | +400+28.9% | Added |
| Cygnus Capital Advisors, LLC | 1,800 | $57.0K | 0.04% | +1,800 | New |
| Mirae Asset Global Investments Co., Ltd. | 2,182 | $68.8K | 0.00% | +2,182 | New |
| Ameritas Investment Partners, Inc. | 2,312 | $72.9K | 0.00% | +1,135+96.4% | Added |
| Legal & General Group Plc | 2,539 | $80.1K | 0.00% | +1,211+91.2% | Added |
| Russell Investments Group, Ltd. | 2,856 | $90.1K | 0.00% | +1,375+92.8% | Added |
| Rockefeller Capital Management L.P. | 3,000 | $94.6K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,416 | $107.7K | 0.00% | +2,149+169.6% | Added |
| New York State Common Retirement Fund | 4,300 | $135.6K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 4,765 | $150.0K | 0.00% | +4,765 | New |
| Axq Capital, LP | 6,463 | $203.8K | 0.05% | +6,463 | New |
| BNP Paribas Arbitrage, SA | 6,784 | $214.0K | 0.00% | +3,888+134.3% | Added |
| Intech Investment Management LLC | 6,858 | $216.3K | 0.00% | +6,858 | New |
| Los Angeles Capital Management LLC | 10,360 | $225.7K | 0.00% | +10,360 | New |
| ProShare Advisors LLC | 7,187 | $226.7K | 0.00% | +7,187 | New |
| Police & Firemen's Retirement System of New Jersey | 7,520 | $237.2K | 0.00% | +3,011+66.8% | Added |
| SEI Investments Co | 7,657 | $241.5K | 0.00% | +7,657 | New |
| Rafferty Asset Management, LLC | 8,113 | $255.9K | 0.00% | +8,113 | New |
| Virtus Investment Advisers, Inc. | 8,910 | $281.0K | 0.08% | −1,704−16.1% | Reduced |
| Simplex Trading, LLC | 8,925 | $281.5K | 0.01% | +8,925 | New |
| Profund Advisors LLC | 9,214 | $290.6K | 0.01% | +9,214 | New |
| Group One Trading, L.P. | 9,428 | $297.4K | 0.01% | +9,428 | New |
| Bridgeway Capital Management, LLC | 10,000 | $315.4K | 0.01% | −4,200−29.6% | Reduced |
| Graham Capital Management, L.P. | 11,254 | $355.0K | 0.01% | +11,254 | New |
| Canada Pension Plan Investment Board | 11,600 | $365.9K | 0.00% | +11,600 | New |
| American Century Companies Inc | 12,236 | $385.9K | 0.00% | +12,236 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 13,258 | $418.2K | 0.00% | +6,138+86.2% | Added |
| JPMorgan Chase & Co | 14,645 | $461.9K | 0.00% | +8,470+137.2% | Added |
| China Universal Asset Management Co., Ltd. | 15,317 | $483.1K | 0.04% | +10,317+206.3% | Added |
| FMR LLC | 15,746 | $496.6K | 0.00% | −53,230−77.2% | Reduced |
| MetLife Investment Management | 16,018 | $505.2K | 0.00% | +5,000+45.4% | Added |
| Citigroup Inc | 16,391 | $517.0K | 0.00% | +16,213+9,108.4% | Added |
| Seven Fleet Capital Management LP | 18,200 | $574.0K | 0.39% | +18,200 | New |
| Koa Wealth Management, LLC | 18,413 | $580.7K | 0.40% | −8,300−31.1% | Reduced |
| Gsa Capital Partners LLP | 19,295 | $609.0K | 0.05% | +19,295 | New |
| Deutsche Bank AG | 20,027 | $631.7K | 0.00% | +9,104+83.3% | Added |
| XTX Topco Ltd | 20,139 | $635.2K | 0.02% | −18,239−47.5% | Reduced |
| Invesco Ltd. | 21,203 | $668.7K | 0.00% | +9,415+79.9% | Added |
| Cerity Partners LLC | 21,323 | $672.5K | 0.00% | +21,323 | New |
| Qube Research & Technologies Ltd | 23,213 | $732.1K | 0.00% | +23,213 | New |
| Fox Run Management, L.L.C. | 23,820 | $751.3K | 0.12% | +23,820 | New |
| Trexquant Investment LP | 24,268 | $765.4K | 0.01% | +24,268 | New |
| Brevan Howard Capital Management LP | 25,663 | $809.4K | 0.02% | +25,663 | New |
| Alliancebernstein L.P. | 27,900 | $880.0K | 0.00% | +17,400+165.7% | Added |
| AQR Capital Management LLC | 31,409 | $990.6K | 0.00% | +15,645+99.2% | Added |
| Wells Fargo & Company | 31,931 | $1.01M | 0.00% | +20,176+171.6% | Added |
| Renaissance Technologies LLC | 32,644 | $1.03M | 0.00% | +32,644 | New |
| Rhumbline Advisers | 33,420 | $1.05M | 0.00% | +11,599+53.2% | Added |
| Creative Planning | 33,651 | $1.06M | 0.00% | +4,919+17.1% | Added |
| Alps Advisors Inc | 36,872 | $1.16M | 0.01% | +20,032+119.0% | Added |
| Bank of America Corp | 37,894 | $1.20M | 0.00% | +11,278+42.4% | Added |
| Platinum Investment Management Ltd | 43,597 | $1.38M | 0.32% | −25,831−37.2% | Reduced |
| Squarepoint Ops LLC | 46,702 | $1.47M | 0.00% | +46,702 | New |
| Acadian Asset Management LLC | 48,614 | $1.53M | 0.00% | +43,605+870.5% | Added |
| Barclays PLC | 52,691 | $1.66M | 0.00% | +31,065+143.6% | Added |
| ExodusPoint Capital Management, LP | 57,005 | $1.80M | 0.02% | −42,995−43.0% | Reduced |
| Verition Fund Management LLC | 57,575 | $1.82M | 0.01% | +57,575 | New |
| Morgan Stanley | 59,026 | $1.86M | 0.00% | +14,158+31.6% | Added |
| Manufacturers Life Insurance Company, The | 69,551 | $2.15M | 0.00% | +1,175+1.7% | Added |
| Aaron Wealth Advisors | 70,000 | $2.21M | 0.12% | +20,000+40.0% | Added |
| Schroder Investment Management Group | 73,736 | $2.28M | 0.00% | −10,030−12.0% | Reduced |
| Bank of New York Mellon Corp | 75,262 | $2.37M | 0.00% | +27,527+57.7% | Added |
| Nuveen, LLC | 75,565 | $2.38M | 0.00% | +53,422+241.3% | Added |
| Susquehanna International Group, LLP | 76,528 | $2.41M | 0.00% | +76,528 | New |
| Advisor Group Holdings, Inc. | 77,601 | $2.45M | 0.00% | +77,601 | New |
| StemPoint Capital LP | 78,553 | $2.48M | 0.43% | +3,553+4.7% | Added |
| PFM Health Sciences, LP | 79,310 | $2.50M | 0.25% | −142,195−64.2% | Reduced |
| Jane Street Group, LLC | 86,581 | $2.73M | 0.00% | +86,581 | New |
| Burkehill Global Management, LP | 100,000 | $3.15M | 0.21% | 00.0% | Unchanged |
| TD Asset Management Inc | 101,450 | $3.20M | 0.00% | −17,342−14.6% | Reduced |
| Balyasny Asset Management LLC | 119,726 | $3.78M | 0.01% | +94,085+366.9% | Added |
| KVP Capital Advisors, LP | 121,524 | $3.83M | 3.96% | +121,524 | New |
| Two Sigma Investments, LP | 138,571 | $4.37M | 0.01% | +124,984+919.9% | Added |