Who owns Mbx Biosciences Inc (MBX)?
101 US mutual funds and ETFs from 64 fund families reported a position in MBX for the quarter ending 2026-06-30. Against their own report a quarter earlier, 48 raised shares, 20 opened a new position, 19 cut and 8 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Ishares Trust | 7 | 22.8% |
| Vanguard Index Funds | 2 | 21.8% |
| Mutual Fund Series Trust | 1 | 13.2% |
| T. Rowe Price Health Sciences Fund, Inc. | 1 | 8.9% |
| Fidelity Hastings Street Trust | 1 | 4.8% |
| Variable Insurance Products Fund Ii | 4 | 4.5% |
Tracked managers holding MBX
None of the managers Prior Moves tracks on 13F reports MBX in its latest filing.
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about MBX. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
Our model ranks every tracked manager’s likely next buys from 13F filings. Request the dataset sample with a work email.
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