Funds holding MBX Biosciences Inc
ISIN US55287L1017 · United States
- Fund holders
- 166
- Of which ETFs
- 37 129 other funds
- Value held
- 313.3M $
- Share of capital
- 21.4 % of 48.2M shares on Aug 3, 2026
| Fund | Shares | Value | Weight in fund | Share of capital | |
|---|---|---|---|---|---|
| MML Small Cap Growth Equity Fund MML SERIES INVESTMENT FUND | 5,372 | 160.4K $ | 0.12 % | 0.01 % | as of Mar 31, 2026 ↗ |
| SIIT EXTENDED MARKET INDEX FUND SEI INSTITUTIONAL INVESTMENTS TRUST | 5,300 | 172.5K $ | 0.01 % | 0.01 % | as of Feb 28, 2026 ↗ |
| Small Cap Index Trust John Hancock Variable Insurance Trust | 5,171 | 154.4K $ | 0.03 % | 0.01 % | as of Mar 31, 2026 ↗ |
| 1290 VT Micro Cap Portfolio EQ Advisors Trust | 5,120 | 152.8K $ | 0.09 % | 0.01 % | as of Mar 31, 2026 ↗ |
| iShares Russell Small/Mid-Cap Index Fund BlackRock Funds | 4,581 | 138.4K $ | 0.01 % | 0.01 % | as of Apr 30, 2026 ↗ |
| Diversified Equity Master Portfolio Master Investment Portfolio | 4,361 | 130.2K $ | 0.00 % | 0.01 % | as of Mar 31, 2026 ↗ |
| AQR Small Cap Momentum Style Fund AQR Funds | 4,286 | 127.9K $ | 0.08 % | 0.01 % | as of Mar 31, 2026 ↗ |
| 1290 VT Small Cap Value Portfolio EQ Advisors Trust | 4,258 | 127.1K $ | 0.03 % | 0.01 % | as of Mar 31, 2026 ↗ |
| DWS Small Cap Index VIP DEUTSCHE DWS INVESTMENTS VIT FUNDS | 3,982 | 118.9K $ | 0.03 % | 0.01 % | as of Mar 31, 2026 ↗ |
| Fidelity Flex Small Cap Index Fund Fidelity Salem Street Trust | 3,794 | 114.7K $ | 0.03 % | 0.01 % | as of Apr 30, 2026 ↗ |
| VY(R) JPMORGAN SMALL CAP CORE EQUITY PORTFOLIO Voya Investors Trust | 3,624 | 108.2K $ | 0.04 % | 0.01 % | as of Mar 31, 2026 ↗ |
| BlackRock Small Cap Index V.I. Fund BlackRock Variable Series Funds, Inc. | 3,515 | 104.9K $ | 0.03 % | 0.01 % | as of Mar 31, 2026 ↗ |
| T. Rowe Price Small-Cap Index Fund T. ROWE PRICE INDEX TRUST, INC. | 3,479 | 103.8K $ | 0.03 % | 0.01 % | as of Mar 31, 2026 ↗ |
| Avantis U.S. Small Cap Equity Fund American Century ETF Trust | 3,264 | 106.2K $ | 0.09 % | 0.01 % | as of Feb 28, 2026 ↗ |
| SA Small Cap Index Portfolio SUNAMERICA SERIES TRUST | 3,216 | 97.2K $ | 0.03 % | 0.01 % | as of Apr 30, 2026 ↗ |
| Avantis U.S. Equity ETF American Century ETF Trust | 3,166 | 103.1K $ | 0.00 % | 0.01 % | as of Feb 28, 2026 ↗ |
| Voya RussellTM Small Cap Index Portfolio Voya VARIABLE PORTFOLIOS INC | 3,087 | 92.1K $ | 0.03 % | 0.01 % | as of Mar 31, 2026 ↗ |
| Victory Extended Market Index Fund Victory Portfolios III | 3,063 | 92.6K $ | 0.01 % | 0.01 % | as of Apr 30, 2026 ↗ |
| VIP Disciplined Small Cap Portfolio Variable Insurance Products Fund II | 2,555 | 76.3K $ | 0.01 % | 0.01 % | as of Mar 31, 2026 ↗ |
| Invesco Nasdaq Biotechnology ETF Invesco Exchange-Traded Fund Trust II | 2,526 | 82.2K $ | 0.11 % | 0.01 % | as of Feb 28, 2026 ↗ |
| PD Small-Cap Value Index Portfolio PACIFIC SELECT FUND | 2,467 | 73.6K $ | 0.06 % | 0.01 % | as of Mar 31, 2026 ↗ |
| CVT Russell 2000 Small Cap Index Portfolio Calvert Variable Trust, Inc. | 2,312 | 69K $ | 0.03 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Nationwide Small Cap Index Fund Nationwide Mutual Funds | 2,296 | 69.4K $ | 0.03 % | 0.00 % | as of Apr 30, 2026 ↗ |
| VANGUARD RUSSELL 3000 INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2,258 | 73.5K $ | 0.00 % | 0.00 % | as of Feb 28, 2026 ↗ |
| SIIT SMALL CAP II FUND SEI INSTITUTIONAL INVESTMENTS TRUST | 2,240 | 72.9K $ | 0.03 % | 0.00 % | as of Feb 28, 2026 ↗ |
| Venerable Small Cap Index Fund Venerable Variable Insurance Trust | 2,164 | 64.6K $ | 0.03 % | 0.00 % | as of Mar 31, 2026 ↗ |
| SIIT SMALL CAP FUND SEI INSTITUTIONAL INVESTMENTS TRUST | 2,090 | 68K $ | 0.04 % | 0.00 % | as of Feb 28, 2026 ↗ |
| ProShares Ultra Nasdaq Biotechnology ProShares Trust | 2,073 | 67.5K $ | 0.07 % | 0.00 % | as of Feb 28, 2026 ↗ |
| Strategic Equity Allocation Trust John Hancock Variable Insurance Trust | 1,985 | 59.3K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| iShares Total U.S. Stock Market Index Fund BlackRock Funds | 1,925 | 58.2K $ | 0.00 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Voya VACS Index Series SC Portfolio Voya VARIABLE PORTFOLIOS INC | 1,803 | 53.8K $ | 0.03 % | 0.00 % | as of Mar 31, 2026 ↗ |
| ProShares Ultra Russell2000 ProShares Trust | 1,762 | 57.4K $ | 0.02 % | 0.00 % | as of Feb 28, 2026 ↗ |
| ProShares UltraPro Russell2000 ProShares Trust | 1,758 | 57.2K $ | 0.02 % | 0.00 % | as of Feb 28, 2026 ↗ |
| SA T. Rowe Price Allocation Moderately Aggressive Portfolio SUNAMERICA SERIES TRUST | 1,618 | 48.9K $ | 0.01 % | 0.00 % | as of Apr 30, 2026 ↗ |
| SIMT Small Cap Fund SEI INSTITUTIONAL MANAGED TRUST | 1,590 | 47.5K $ | 0.01 % | 0.00 % | as of Mar 31, 2026 ↗ |
| PHARMACEUTICALS ULTRASECTOR PROFUND ProFunds | 1,510 | 45.6K $ | 1.35 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Morgan Stanley Pathway Small-Mid Cap Equity ETF MORGAN STANLEY PATHWAY FUNDS | 1,477 | 48.1K $ | 0.01 % | 0.00 % | as of Feb 28, 2026 ↗ |
| Small-Cap Equity Portfolio PACIFIC SELECT FUND | 1,269 | 37.9K $ | 0.01 % | 0.00 % | as of Mar 31, 2026 ↗ |
| SA Multi-Managed Small Cap Portfolio SEASONS SERIES TRUST | 1,241 | 37K $ | 0.03 % | 0.00 % | as of Mar 31, 2026 ↗ |
| ProShares Russell 2000 High Income ETF ProShares Trust | 1,235 | 40.2K $ | 0.03 % | 0.00 % | as of Feb 28, 2026 ↗ |
| JNL/DFA U.S. Small Cap Fund JNL Series Trust | 961 | 28.7K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| EQ/Franklin Small Cap Value Managed Volatility Portfolio EQ Advisors Trust | 941 | 28.1K $ | 0.01 % | 0.00 % | as of Mar 31, 2026 ↗ |
| SmallCap Value Fund II Principal Funds, Inc | 914 | 27.6K $ | 0.00 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Dimensional US Core Equity Market ETF Dimensional ETF Trust | 869 | 26.3K $ | 0.00 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Penn Series Small Cap Index Fund Penn Series Funds Inc | 800 | 23.9K $ | 0.03 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Total Stock Market Index Trust John Hancock Variable Insurance Trust | 722 | 21.6K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| State Street Total Return V.I.S. Fund STATE STREET VARIABLE INSURANCE SERIES FUNDS INC | 663 | 19.8K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| TIAA Separate Account VA-1 - Stock Index Account TIAA Separate Account VA-1 | 543 | 16.2K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| T. Rowe Price Innovation Leaders ETF T. Rowe Price Exchange-Traded Funds, Inc. | 465 | 13.9K $ | 0.09 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Nuveen Life Stock Index Fund TIAA-CREF Life Funds | 402 | 12K $ | 0.00 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Fidelity Flex Small Cap Focused Index Fund Fidelity Salem Street Trust | 381 | 11.5K $ | 0.07 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Dimensional US Core Equity 1 ETF Dimensional ETF Trust | 344 | 10.4K $ | 0.00 % | 0.00 % | as of Apr 30, 2026 ↗ |
| ULTRA SMALL CAP PROFUND ProFunds | 320 | 9.7K $ | 0.02 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Nationwide Fundamental All Cap Equity Portfolio Nationwide Mutual Funds | 235 | 7.1K $ | 0.00 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Knights of Columbus U.S. ALL CAP INDEX FUND ADVISORS' INNER CIRCLE III | 185 | 5.6K $ | 0.00 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Russell 2000 2x Strategy Fund Rydex Dynamic Funds | 141 | 4.2K $ | 0.01 % | 0.00 % | as of Mar 31, 2026 ↗ |
| PROFUND VP ULTRA SMALL CAP ProFunds | 95 | 2.8K $ | 0.02 % | 0.00 % | as of Mar 31, 2026 ↗ |
| PROFUND VP SMALL CAP ProFunds | 72 | 2.1K $ | 0.02 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Russell 2000 Fund Rydex Series Funds | 65 | 1.9K $ | 0.02 % | 0.00 % | as of Mar 31, 2026 ↗ |
| SMALL-CAP PROFUND ProFunds | 52 | 1.6K $ | 0.02 % | 0.00 % | as of Apr 30, 2026 ↗ |
| Columbia Research Enhanced Small Cap ETF Columbia ETF Trust I | 40 | 1.2K $ | 0.04 % | 0.00 % | as of Mar 31, 2026 ↗ |
| Russell 2000 1.5x Strategy Fund Rydex Series Funds | 39 | 1.2K $ | 0.02 % | 0.00 % | as of Mar 31, 2026 ↗ |
| ProShares Hedge Replication ETF ProShares Trust | 29 | 944 $ | 0.00 % | 0.00 % | as of Feb 28, 2026 ↗ |
| Dimensional US Sustainability Core 1 ETF Dimensional ETF Trust | 29 | 876.4 $ | 0.00 % | as of Apr 30, 2026 ↗ | |
| ProShares Russell 2000 Dynamic Buffer ETF ProShares Trust | 8 | 260.4 $ | 0.02 % | 0.00 % | as of Feb 28, 2026 ↗ |
| Russell 2000(R) 1.5x Strategy Fund Rydex Variable Trust | 7 | 209 $ | 0.01 % | 0.00 % | as of Mar 31, 2026 ↗ |
The funds most exposed to it
The weight is the share of a fund's net assets. The holders table ranks funds by number of shares. This one ranks them by the weight of the company in each fund.
| Fund | Weight in fund | |
|---|---|---|
| Roundhill GLP-1 & Weight Loss ETF Roundhill ETF Trust | 1.99 % | as of Mar 31, 2026 ↗ |
| State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF SPDR SERIES TRUST | 1.95 % | as of Mar 31, 2026 ↗ |
| PROFUND VP PHARMACEUTICALS ProFunds | 1.87 % | as of Mar 31, 2026 ↗ |
| Eventide Healthcare & Life Sciences Fund MUTUAL FUND SERIES TRUST | 1.67 % | as of Mar 31, 2026 ↗ |
| Direxion Daily Pharmaceutical & Medical Bull 3X Shares Direxion Shares ETF Trust | 1.37 % | as of Apr 30, 2026 ↗ |
| PHARMACEUTICALS ULTRASECTOR PROFUND ProFunds | 1.35 % | as of Apr 30, 2026 ↗ |
| ALPS Medical Breakthroughs ETF ALPS ETF TRUST | 0.94 % | as of Feb 28, 2026 ↗ |
| Virtus Biotech Clinical Trials Etf ETFis Series Trust I | 0.75 % | as of Apr 30, 2026 ↗ |
| Driehaus Micro Cap Growth Fund Driehaus Mutual Funds | 0.74 % | as of Mar 31, 2026 ↗ |
| Fidelity Advisor Biotechnology Fund Fidelity Advisor Series VII | 0.48 % | as of Apr 30, 2026 ↗ |
Quarter after quarter
Each row is one quarter of SEC filings, newest first. The change compares each quarter with the one before.
| Quarter | Holders | Change | Shares | Change |
|---|---|---|---|---|
| 2026Q2 | 166 | +51 | 10,329,986 | +58.1 % |
| 2026Q1 | 115 | +15 | 6,534,965 | +22.7 % |
| 2025Q4 | 100 | +13 | 5,324,986 | +78.2 % |
| 2025Q3 | 87 | -2 | 2,988,454 | +39.0 % |
| 2025Q2 | 89 | +19 | 2,150,079 | +20.4 % |
| 2025Q1 | 70 | +59 | 1,786,505 | +242.9 % |
| 2024Q4 | 11 | 520,959 |
Institutional managers
149 managers declare this company to the SEC (Form 13F). The table shows the 25 largest.
| Manager | Shares | Value | |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 6,652,013 | 198.6M $ | as of Mar 31, 2026 |
| ORBIMED ADVISORS LLC | 3,637,887 | 108.6M $ | as of Mar 31, 2026 |
| NEA Management Company, LLC | 3,614,486 | 107.9M $ | as of Mar 31, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | 3,191,824 | 95.3M $ | as of Mar 31, 2026 |
| BlackRock, Inc. | 2,941,406 | 87.8M $ | as of Mar 31, 2026 |
| FMR LLC | 2,936,684 | 87.7M $ | as of Mar 31, 2026 |
| Deep Track Capital, LP | 2,757,569 | 82.3M $ | as of Mar 31, 2026 |
| NVP ASSOCIATES, LLC | 2,136,335 | 63.8M $ | as of Mar 31, 2026 |
| Polar Capital Holdings Plc | 1,622,186 | 48.4M $ | as of Mar 31, 2026 |
| BRAIDWELL LP | 1,492,467 | 44.6M $ | as of Mar 31, 2026 |
| Aaron Wealth Advisors LLC | 1,168,176 | 34.9M $ | as of Mar 31, 2026 |
| Cormorant Asset Management, LP | 1,120,000 | 33.4M $ | as of Mar 31, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1,029,007 | 30.7K $ | as of Mar 31, 2026 |
| Driehaus Capital Management LLC | 1,018,212 | 30.4M $ | as of Mar 31, 2026 |
| Kynam Capital Management, LP | 934,799 | 27.9M $ | as of Mar 31, 2026 |
| CITADEL ADVISORS LLC | 932,833 | 27.8M $ | as of Mar 31, 2026 |
| Woodline Partners LP | 900,063 | 26.9M $ | as of Mar 31, 2026 |
| EVENTIDE ASSET MANAGEMENT, LLC | 890,000 | 26.6M $ | as of Mar 31, 2026 |
| Caligan Partners LP | 848,590 | 25.3M $ | as of Mar 31, 2026 |
| Parkman Healthcare Partners LLC | 800,037 | 23.9M $ | as of Mar 31, 2026 |
| STATE STREET CORP | 787,208 | 23.5M $ | as of Mar 31, 2026 |
| EcoR1 Capital, LLC | 777,000 | 23.2M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 670,385 | 20M $ | as of Mar 31, 2026 |
| TCG Crossover Management, LLC | 650,000 | 19.4M $ | as of Mar 31, 2026 |
| MILLENNIUM MANAGEMENT LLC | 564,415 | 16.8M $ | as of Mar 31, 2026 |
Declared shareholders of MBX Biosciences Inc
There are 3 beneficial ownership filings. These stakes do not add up. An asset manager that files includes its own funds, which already appear among the funds on this page.
| Shareholder | Declared stake | Shares | |
|---|---|---|---|
| FMR LLC and 1 other | 6.20 % | 2,936,684 | as of Mar 31, 2026 · SCHEDULE 13G |
| Paradigm BioCapital Advisors LP and 3 others | 5.20 % | 2,493,015 | as of Jun 16, 2026 · SCHEDULE 13G |
| BlackRock, Inc. | 4.80 % | 2,287,497 | as of Mar 31, 2026 · SCHEDULE 13G |
Cite this page
Titelia. "Funds holding MBX Biosciences Inc". https://titelia.com/en/stocks/mbx-biosciences-inc-US55287L1017