As of the latest SEC filings, MBX Biosciences, Inc. (MBX) is held by 166 institutional funds. The largest fund shareholder is VANGUARD TOTAL STOCK MARKET INDEX FUND (VTI), holding an estimated $34,589,433.75 in market value, representing a significant portion of its portfolio.
Funds holding MBX Biosciences, Inc. (MBX)
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- MBX
- CIK:
- 0001776111
| Fund | Type | Manager | Weight | Market Value | Shares |
Report Date
|
Filing Date
|
|---|---|---|---|---|---|---|---|
|
VTI
VANGUARD TOTAL STOCK MARKET INDEX FUND
|
ETF | Vanguard | 0.00% | $34,589,433.75 | 1,158,775 | Mar 31, 2026 | May 28, 2026 |
|
ETAHX
Eventide Healthcare & Life Sciences Fund
|
MF | Independent / Boutique | 1.67% | $26,566,500.00 | 890,000 | Mar 31, 2026 | May 29, 2026 |
|
PRHSX
T. Rowe Price Health Sciences Fund, Inc.
|
MF | T. Rowe Price | 0.20% | $21,531,073.65 | 721,309 | Mar 31, 2026 | May 28, 2026 |
|
IWM
iShares Russell 2000 ETF
|
ETF | BlackRock / iShares | 0.03% | $20,824,942.05 | 697,653 | Mar 31, 2026 | May 28, 2026 |
|
FCDTX
Fidelity Stock Selector Small Cap Fund
|
MF | Fidelity | 0.18% | $12,689,378.00 | 419,900 | Apr 30, 2026 | Jun 26, 2026 |
|
SHSKX
BlackRock Health Sciences Opportunities Portfolio
|
MF | BlackRock / iShares | 0.17% | $10,850,542.50 | 333,350 | Feb 27, 2026 | Apr 24, 2026 |
|
FFDKX
Fidelity Fund
|
MF | Fidelity | 0.11% | $9,584,835.00 | 321,100 | Mar 31, 2026 | May 26, 2026 |
|
FBTIX
Fidelity Advisor Biotechnology Fund
|
MF | Fidelity | 0.48% | $9,205,012.00 | 304,600 | Apr 30, 2026 | Jun 26, 2026 |
|
FIDGX
Fidelity Small Cap Growth Fund
|
MF | Fidelity | 0.11% | $9,115,560.80 | 301,640 | Apr 30, 2026 | Jun 26, 2026 |
|
FSPHX
Select Health Care Portfolio
|
MF | Fidelity | 0.15% | $9,114,000.00 | 280,000 | Feb 28, 2026 | Apr 24, 2026 |
|
FACTX
Fidelity Advisor Health Care Fund
|
MF | Fidelity | 0.31% | $9,066,000.00 | 300,000 | Apr 30, 2026 | Jun 26, 2026 |
|
FSOPX
Fidelity Series Small Cap Opportunities Fund
|
MF | Fidelity | 0.18% | $8,911,878.00 | 294,900 | Apr 30, 2026 | Jun 26, 2026 |
|
-
VIP Contrafund Portfolio
|
ETF | Independent / Boutique | 0.03% | $8,563,965.00 | 286,900 | Mar 31, 2026 | May 26, 2026 |
|
FSSNX
Fidelity Small Cap Index Fund
|
MF | Fidelity | 0.03% | $8,521,224.06 | 281,973 | Apr 30, 2026 | Jun 26, 2026 |
|
VEMPX
VANGUARD EXTENDED MARKET INDEX FUND
|
ETF | Vanguard | 0.01% | $8,445,162.00 | 282,920 | Mar 31, 2026 | May 28, 2026 |
|
IWN
iShares Russell 2000 Value ETF
|
ETF | BlackRock / iShares | 0.06% | $7,258,296.15 | 243,159 | Mar 31, 2026 | May 28, 2026 |
|
XPH
State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF
|
ETF | State Street (SPDR) | 1.95% | $5,992,208.40 | 200,744 | Mar 31, 2026 | May 28, 2026 |
|
IBB
iShares Biotechnology ETF
|
ETF | BlackRock / iShares | 0.07% | $5,958,030.15 | 199,599 | Mar 31, 2026 | May 28, 2026 |
|
FOCSX
Fidelity Small Cap Growth K6 Fund
|
MF | Fidelity | 0.11% | $4,599,786.20 | 152,210 | Apr 30, 2026 | Jun 26, 2026 |
|
VTWO
VANGUARD RUSSELL 2000 INDEX FUND
|
ETF | Vanguard | 0.03% | $4,593,130.50 | 141,110 | Feb 28, 2026 | Apr 28, 2026 |
|
FSMAX
Fidelity Extended Market Index Fund
|
MF | Fidelity | 0.01% | $4,268,476.80 | 131,136 | Feb 28, 2026 | Apr 24, 2026 |
|
SCHA
Schwab U.S. Small-Cap ETF
|
ETF | Charles Schwab | 0.02% | $3,957,331.35 | 121,577 | Feb 28, 2026 | Apr 24, 2026 |
|
BMEZ
BlackRock Health Sciences Term Trust
|
CEF | BlackRock / iShares | 0.38% | $3,837,187.65 | 128,549 | Mar 31, 2026 | May 28, 2026 |
|
DMCRX
Driehaus Micro Cap Growth Fund
|
MF | Independent / Boutique | 0.74% | $3,406,571.55 | 114,123 | Mar 31, 2026 | May 27, 2026 |
|
IHSVX
THE HARTFORD SMALL COMPANY FUND
|
MF | Independent / Boutique | 0.47% | $3,136,140.94 | 103,777 | Apr 30, 2026 | Jun 25, 2026 |
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