MBX BIOSCIENCES INC COM is a security (CUSIP 55287L101) tracked across SEC portfolio filings. 157 institutional managers reported $1.6B on Form 13F as of 2026-06-30; 18 registered fund positions totaling $56.6M via N-PORT as of 2026-05-31.
Showing 15 of 157 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | MENLO PARK, CA | $198.6M | 6,652,013 |
| ORBIMED ADVISORS LLC | New York, NY | $108.6M | 3,637,887 |
| NEA Management Company, LLC | TIMONIUM, MD | $107.9M | 3,614,486 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $95.3M | 3,191,824 |
| BlackRock, Inc. | New York, NY | $87.8M | 2,941,406 |
| FMR LLC | BOSTON, MA | $87.7M | 2,936,684 |
| Deep Track Capital, LP | GREENWICH, CT | $82.3M | 2,757,569 |
| Aaron Wealth Advisors LLC | Chicago, IL | $64.5M | 1,167,799 |
| NVP Associates, LLC | Menlo Park, CA | $63.8M | 2,136,335 |
| VANGUARD GROUP INC | Valley Forge, PA | $57.3M | 1,817,811 |
| Polar Capital Holdings Plc | London, X0 | $48.4M | 1,622,186 |
| BRAIDWELL LP | STAMFORD, CT | $44.6M | 1,492,467 |
| Cormorant Asset Management, LP | BOSTON, MA | $33.4M | 1,120,000 |
| Driehaus Capital Management LLC | Chicago, IL | $30.4M | 1,018,212 |
| CITADEL ADVISORS LLC | MIAMI, FL | $28.9M | 932,833 |
Showing 15 of 18 fund positions by value.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| T. Rowe Price Health Sciences Fund, Inc. | T. ROWE PRICE HEALTH SCIENCES FUND, INC. | $21.5M | 19.77% |
| Fidelity Advisor Health Care Fund | Fidelity Advisor Series VII | $9.1M | 31.40% |
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $8.4M | 1.04% |
| VANGUARD RUSSELL 2000 INDEX FUND | VANGUARD SCOTTSDALE FUNDS | $4.6M | 2.63% |
| BlackRock Health Sciences Term Trust | BlackRock Health Sciences Term Trust | $3.8M | 37.91% |
| VANGUARD U.S. MOMENTUM FACTOR ETF | VANGUARD WELLINGTON FUND | $2.1M | 11.63% |
| Master Small Cap Index Series | Quantitative Master Series LLC | $1.3M | 2.78% |
| T. Rowe Price Health Sciences Portfolio | T. ROWE PRICE EQUITY SERIES, INC. | $1.3M | 19.83% |
| HARTFORD SMALL COMPANY HLS FUND | HARTFORD SERIES FUND INC | $937K | 24.09% |
| BlackRock Health Sciences Trust | BlackRock Health Sciences Trust | $849K | 15.95% |
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $575K | 0.10% |
| U.S. MICRO CAP PORTFOLIO | DFA INVESTMENT DIMENSIONS GROUP INC | $508K | 0.68% |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND | VANGUARD INSTITUTIONAL INDEX FUNDS | $492K | 0.16% |
| Fidelity Nasdaq Composite Index ETF | Fidelity Commonwealth Trust | $443K | 0.41% |
| Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF | Goldman Sachs ETF Trust | $241K | 2.44% |