MBX · Company research
MBX Biosciences, Inc. Common Stock (MBX): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
80records availableHealthcare
Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| Caption Management, LLC | 1706766 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 11040000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Parallel Advisors, LLC | 1690010 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 79 | 4361 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| Keating Financial Advisory Services, Inc. | 2103443 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 54 | 2981 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| NVP ASSOCIATES, LLC | 1545692 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2136335 | 117925692 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| JPMORGAN CHASE & CO | 19617 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 115615 | 6225868 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1368163 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2086 | 115147 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| SIMPLEX TRADING, LLC | 1488542 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1327 | 73250 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Deep Track Capital, LP | 1856083 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1732569 | 95637809 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Allworth Financial LP | 1555170 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 48 | 2650 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| HighVista Strategies LLC | 1335325 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11634 | 642197 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| JONES FINANCIAL COMPANIES LLLP | 815917 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 80 | 4185 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 346717 | 19138778 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Tema ETFs LLC | 2056807 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5010 | 276552 | — | — | — | Jul 10, 2026 | SEC_13F_DATASET |
| TCG Crossover Management, LLC | 1839948 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 650000 | 35880000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VANGUARD FIDUCIARY TRUST CO | 933478 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 201429 | 11118881 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Rhenman & Partners Asset Management AB | 1599882 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 62000 | 3422400 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| KLP KAPITALFORVALTNING AS | 1717443 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4900 | 270480 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| RHUMBLINE ADVISERS | 1115418 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 37196 | 2053213 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| STATE STREET CORP | 93751 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 864466 | 47718523 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| MERCER GLOBAL ADVISORS INC /ADV | 853758 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 553 | 30526 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| NORTHERN TRUST CORP | 73124 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4779 | 263801 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| EVENTIDE ASSET MANAGEMENT, LLC | 1442891 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 873492 | 48216758 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| DNB Asset Management AS | 1456670 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7793 | 430174 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| BARCLAYS PLC | 312069 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 86149 | 4755424 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Tower Research Capital LLC (TRC) | 1533421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3651 | 201535 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| OPTIMIZE FINANCIAL INC. | 2033266 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14458 | 798082 | — | — | — | Aug 27, 2026 | SEC_13F_DATASET |
| SJS Investment Consulting Inc. | 1894302 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2 | 111 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1705339 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14292 | 788918 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FRED ALGER MANAGEMENT, LLC | 3520 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 9877 | 545210 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| AMERICAN CENTURY COMPANIES INC | 748054 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22680 | 1251936 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| VOYA INVESTMENT MANAGEMENT LLC | 1068837 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20170 | 1113384 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Arax Advisory Partners | 1586767 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 279 | 15401 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 2057170 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25800 | 1424160 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| MARSHALL WACE, LLP | 1318757 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 401885 | 22184052 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| NEW YORK STATE COMMON RETIREMENT FUND | 810265 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11000 | 607200 | — | — | — | Jul 29, 2026 | SEC_13F_DATASET |
| Soleus Capital Management, L.P. | 1802630 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 515279 | 28443401 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Quantinno Capital Management LP | 1759654 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6497 | 358634 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| DIMENSIONAL FUND ADVISORS LP | 354204 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 226945 | 12527364 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Elmind Capital, LP | 2052213 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 91000 | 5023200 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| EverSource Wealth Advisors, LLC | 1710537 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22 | 1214 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| BOOTHBAY FUND MANAGEMENT, LLC | 1549230 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 70353 | 3883486 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SG Americas Securities, LLC | 1313360 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6245 | 345 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 94400 | 5210880 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Schonfeld Strategic Advisors LLC | 1665241 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 248670 | 13726583 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Rockefeller Capital Management L.P. | 1739439 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 224 | 12365 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| GOLDMAN SACHS GROUP INC | 886982 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 383185 | 21151812 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| State of Wyoming | 1821626 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1055 | 58236 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 928047 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 66112 | 3649382 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ARIZONA STATE RETIREMENT SYSTEM | 1558481 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5899 | 325625 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Hughes Financial Services, LLC | 2054465 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1 | 55 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| Fortitude Family Office, LLC | 1950506 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19 | 1049 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| Jupiter Topco LLC | 2146052 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10300 | 568303 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Essential Partners LLC | 2136442 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15 | 828 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 861177 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18021 | 994759 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Burkehill Global Management, LP | 1904549 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 5520000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Ameritas Investment Partners, Inc. | 1055980 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2817 | 155498 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| D. E. Shaw & Co., Inc. | 1009207 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 182767 | 10088738 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Bank of New York Mellon Corp | 1390777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 59053 | 3259726 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Rafferty Asset Management, LLC | 1389426 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6410 | 353832 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Kynam Capital Management, LP | 1907884 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 934799 | 51600905 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ALLIANCEBERNSTEIN L.P. | 1109448 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 31000 | 925350 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SEI INVESTMENTS CO | 350894 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5868 | 323914 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Polar Capital Holdings Plc | 1837309 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1608514 | 88789973 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MOORE CAPITAL MANAGEMENT, LP | 1448574 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 64893 | 3582094 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| INTECH INVESTMENT MANAGEMENT LLC | 1086318 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5951 | 328495 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| AXQ CAPITAL, LP | 1916908 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7757 | 428186 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Cormorant Asset Management, LP | 1583977 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 550000 | 30360000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Farther Finance Advisors, LLC | 1992825 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 9 | 497 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
| XTX Topco Ltd | 1828301 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6392 | 352838 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Brevan Howard Capital Management LP | 1512857 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4977 | 274730 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Creative Planning | 1540235 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 38832 | 2143526 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| NATIONAL BANK OF CANADA /FI/ | 926171 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11 | 607 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Russell Investments Group, Ltd. | 1692234 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15162 | 836942 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| TWO SIGMA INVESTMENTS, LP | 1179392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 113475 | 6263820 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FRANKLIN RESOURCES INC | 38777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 252601 | 13943575 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| KBC Group NV | 1411133 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 810 | 45 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| BANK OF AMERICA CORP /DE/ | 70858 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 287524 | 15871325 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 884546 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 233095 | 12866844 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| NISA INVESTMENT ADVISORS, LLC | 937615 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2013 | 111118 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| US BANCORP \DE\ | 36104 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 108 | 5962 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.