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, Q1 2025
Institutional positions in MBX Biosciences, Inc. as of Mar 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
- 79
- +17 vs. Q4 2024
- Shares held
- 35.7M
- +2.74M (+8.3%) vs. Q4 2024
- Total value
- $263.2M
- −$343.0M (−56.6%) vs. Q4 2024
- New holders
- 27
- 24 more added
- Sold out
- 10
- 15 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding MBX Biosciences, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| True Wealth Design, LLC | 3 | $23 | 0.00% | +3 | New |
| EverSource Wealth Advisors, LLC | 9 | $66 | 0.00% | +9 | New |
| GAMMA Investing LLC | 20 | $148 | 0.00% | +20 | New |
| Sterling Capital Management LLC | 91 | $672 | 0.00% | −70−43.5% | Reduced |
| CWM, LLC | 137 | $1.00K | 0.00% | +137 | New |
| US Bancorp | 330 | $2.44K | 0.00% | +330 | New |
| Amalgamated Bank | 384 | $3.00K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 635 | $4.00K | 0.00% | −198−23.8% | Reduced |
| STRS Ohio | 700 | $5.17K | 0.00% | −1,400−66.7% | Reduced |
| California State Teachers Retirement System | 832 | $6.14K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,107 | $8.17K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 1,177 | $8.69K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,365 | $10.1K | 0.00% | +562+70.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 2,143 | $15.8K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 4,300 | $31.7K | 0.00% | +4,300 | New |
| Corebridge Financial, Inc. | 5,511 | $40.7K | 0.00% | −82−1.5% | Reduced |
| Wells Fargo & Company | 5,977 | $44.1K | 0.00% | +133+2.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 6,647 | $49.1K | 0.00% | +312+4.9% | Added |
| Virtus Investment Advisers, Inc. | 8,006 | $59.1K | 0.02% | +8,006 | New |
| Rhumbline Advisers | 8,712 | $64.3K | 0.00% | −760−8.0% | Reduced |
| Deutsche Bank AG | 8,762 | $64.7K | 0.00% | +4,424+102.0% | Added |
| Intech Investment Management LLC | 10,728 | $79.2K | 0.00% | +10,728 | New |
| Barclays PLC | 11,818 | $87.2K | 0.00% | −5,615−32.2% | Reduced |
| Wealthedge Investment Advisors, LLC | 11,864 | $87.6K | 0.04% | +11,864 | New |
| Gsa Capital Partners LLP | 12,369 | $91.0K | 0.01% | +12,369 | New |
| Susquehanna International Group, LLP | 13,660 | $100.8K | 0.00% | +13,660 | New |
| Nuveen, LLC | 14,471 | $106.8K | 0.00% | +14,471 | New |
| Goldman Sachs Group Inc | 15,168 | $111.9K | 0.00% | −19,659−56.4% | Reduced |
| Koa Wealth Management, LLC | 19,396 | $143.1K | 0.12% | +19,396 | New |
| Verition Fund Management LLC | 19,815 | $146.2K | 0.00% | +19,815 | New |
| Squarepoint Ops LLC | 20,098 | $148.3K | 0.00% | +20,098 | New |
| Bank of New York Mellon Corp | 23,910 | $176.5K | 0.00% | −40.0% | Reduced |
| Alps Advisors Inc | 26,034 | $192.1K | 0.00% | −986−3.6% | Reduced |
| UBS Group AG | 27,499 | $202.9K | 0.00% | −18,402−40.1% | Reduced |
| Bank of America Corp | 28,090 | $207.3K | 0.00% | +12,031+74.9% | Added |
| Jump Financial, LLC | 28,996 | $214.0K | 0.00% | +28,996 | New |
| BNP Paribas Arbitrage, SA | 30,916 | $228.2K | 0.00% | +29,430+1,980.5% | Added |
| Walleye Capital LLC | 32,490 | $239.8K | 0.00% | +32,490 | New |
| Two Sigma Investments, LP | 33,833 | $249.7K | 0.00% | +33,833 | New |
| Prelude Capital Management, LLC | 40,225 | $296.9K | 0.03% | +40,225 | New |
| FMR LLC | 44,240 | $326.5K | 0.00% | +19,667+80.0% | Added |
| Shay Capital LLC | 49,133 | $362.6K | 0.11% | +49,133 | New |
| Aaron Wealth Advisors | 50,000 | $369.0K | 0.04% | +50,000 | New |
| Manufacturers Life Insurance Company, The | 50,110 | $369.8K | 0.00% | +435+0.9% | Added |
| Charles Schwab Investment Management Inc | 94,546 | $697.7K | 0.00% | +1,235+1.3% | Added |
| Northern Trust Corp | 96,507 | $712.2K | 0.00% | +5,825+6.4% | Added |
| StemPoint Capital LP | 96,615 | $713.0K | 0.23% | +96,615 | New |
| Citigroup Inc | 97,328 | $718.3K | 0.00% | +88,464+998.0% | Added |
| Point72 Asset Management, L.P. | 110,482 | $815.4K | 0.00% | +110,482 | New |
| Marshall Wace, LLP | 111,211 | $820.7K | 0.00% | +85,311+329.4% | Added |
| Morgan Stanley | 114,610 | $845.8K | 0.00% | +90,775+380.8% | Added |
| Exome Asset Management LLC | 133,113 | $982.4K | 0.88% | +133,113 | New |
| TD Asset Management Inc | 151,504 | $1.12M | 0.00% | +114,904+313.9% | Added |
| Millennium Management LLC | 170,440 | $1.26M | 0.00% | −163,202−48.9% | Reduced |
| Affinity Asset Advisors, LLC | 175,000 | $1.29M | 0.20% | +175,000 | New |
| State Street Corp | 177,220 | $1.31M | 0.00% | +34,571+24.2% | Added |
| Platinum Investment Management Ltd | 185,932 | $1.37M | 0.08% | +23,842+14.7% | Added |
| Schonfeld Strategic Advisors LLC | 200,642 | $1.48M | 0.01% | +129,142+180.6% | Added |
| JPMorgan Chase & Co | 201,235 | $1.49M | 0.00% | +192,129+2,109.9% | Added |
| Opaleye Management Inc. | 250,000 | $1.84M | 0.41% | +250,000 | New |
| Geode Capital Management, LLC | 274,458 | $2.03M | 0.00% | +8,755+3.3% | Added |
| Parkman Healthcare Partners LLC | 328,323 | $2.42M | 0.29% | +158,323+93.1% | Added |
| Franklin Resources Inc | 369,315 | $2.73M | 0.00% | +150.0% | Added |
| TCG Crossover Management, LLC | 650,000 | $4.80M | 0.65% | 00.0% | Unchanged |
| Vanguard Group Inc | 665,563 | $4.91M | 0.00% | −5,385−0.8% | Reduced |
| Cormorant Asset Management, LP | 700,000 | $5.17M | 0.39% | 00.0% | Unchanged |
| BlackRock, Inc. | 783,042 | $5.78M | 0.00% | +55,090+7.6% | Added |
| Woodline Partners LP | 877,461 | $6.48M | 0.04% | +268,740+44.1% | Added |
| Price T Rowe Associates Inc | 1,100,916 | $8.13M | 0.00% | −60,611−5.2% | Reduced |
| MPM Oncology Impact Management LP | 1,132,950 | $8.36M | 1.44% | +1,132,950 | New |
| EcoR1 Capital, LLC | 1,259,273 | $9.29M | 0.55% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 1,511,334 | $11.2M | 0.19% | 00.0% | Unchanged |
| Driehaus Capital Management LLC | 1,579,207 | $11.7M | 0.11% | −2,553−0.2% | Reduced |
| NVP Associates, LLC | 2,136,335 | $15.8M | 14.05% | 00.0% | Unchanged |
| Wellington Management Group LLP | 2,638,521 | $19.5M | 0.00% | −271,118−9.3% | Reduced |
| Deep Track Capital, LP | 3,018,935 | $22.3M | 0.72% | 00.0% | Unchanged |
| NEA Management Company, LLC | 3,614,486 | $26.7M | 2.05% | 00.0% | Unchanged |
| OrbiMed Advisors LLC | 4,002,887 | $29.5M | 0.71% | +190,672+5.0% | Added |
| Frazier Life Sciences Management, L.P. | 5,985,347 | $44.2M | 2.02% | 00.0% | Unchanged |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −220,330−100.0% | Sold out |
| Alyeska Investment Group, L.P. | 0 | $0 | 0.00% | −174,700−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −26,708−100.0% | Sold out |
| Norges Bank | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Saturn V Capital Management LLC | 0 | $0 | 0.00% | −18,000−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −12,743−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −7,230−100.0% | Sold out |
| Sandia Investment Management LP | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −3,468−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −400−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |