Metagenomi TherapeuticsMGX
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 48 institutions reported holding Metagenomi Therapeutics Inc. (MGX) in their 13F filings, down 8 from Q4 2025. 2 opened new positions and 11 sold out. The largest holders were Vanguard Capital Management LLC ($1.4M), Renaissance Technologies ($1.1M) and Catalio Capital Management, LP ($709K). 4 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Metagenomi Therapeutics Inc.
- CUSIP
- 59102M104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $512K |
| Exits | 11 | $314K |
All 13F filers, Q4 2025 → Q1 2026: 786,124 shares bought and 856,329 shares sold, net −70,205 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 48 holders
| Vanguard Capital Management LLC | 0.00% | — | 1,057,944 | $1.4M |
| Renaissance Technologies | 0.00% | Add +25.4% | 787,900 | $1.1M |
| Catalio Capital Management, LP | 0.15% | No change | 528,993 | $709K |
| Peapod Lane Capital LLC | 0.56% | Add +3.8% | 516,761 | $683K |
| Two Sigma Investments, LP | 0.00% | Add +12.6% | 496,767 | $666K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 395,800 | $530K |
| Jacobs Levy Equity Management, Inc. | 0.00% | New | 382,153 | $512K |
| Geode Capital Management, LLC | 0.00% | Add +17.1% | 358,200 | $480K |
| Pura Vida Investments, LLC | 2.38% | No change | 264,391 | $354K |
| BlackRock, Inc. | 0.00% | Add +2.7% | 230,134 | $308K |
| Wells Fargo & Company | 0.00% | Add +70.7% | 202,138 | $271K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 170,174 | $228K |
| Millennium Management | 0.00% | Reduce -27.7% | 170,104 | $228K |
| Jane Street Group, LLC | 0.00% | Reduce -65.1% | 151,440 | $203K |
| State Street Corp. | 0.00% | No change | 120,427 | $161K |
| Resolute Advisors LLC | 0.05% | No change | 89,944 | $121K |
| Man Group plc | 0.00% | Add +39.2% | 78,636 | $105K |
| Northern Trust Corp. | 0.00% | No change | 75,172 | $101K |
| RBF Capital, LLC | 0.00% | No change | 64,021 | $86K |
| BBR Partners, LLC | 0.00% | No change | 53,403 | $72K |
| XTX Topco Ltd | 0.00% | Reduce -41.2% | 40,582 | $54K |
| Fortitude Advisory Group L.L.C. | 0.02% | Reduce -4.0% | 37,190 | $50K |
| Morgan Stanley | 0.00% | Reduce -53.8% | 27,566 | $37K |
| Marshall Wace, LLP | 0.00% | Reduce -65.2% | 27,521 | $37K |
| Citadel Advisors | 0.00% | Reduce -90.5% | 16,993 | $23K |
| LPL Financial LLC | 0.00% | Add +49.0% | 16,834 | $23K |
| UBS Group AG | 0.00% | Reduce -35.9% | 16,098 | $22K |
| Vanguard Global Advisers, LLC | 0.00% | — | 13,392 | $18K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -7.2% | 12,797 | $17K |
| Peak Planning Group, LLC | 0.00% | No change | 12,500 | $17K |
| Point72 Asset Management | 0.00% | Reduce -55.9% | 11,726 | $16K |
| HRT Financial LP | 0.00% | Reduce -3.8% | 10,674 | $14K |
| Meeder Asset Management Inc. | 0.00% | No change | 5,496 | $7K |
| FMR LLC | 0.00% | Reduce -30.7% | 4,718 | $6K |
| US Bancorp \de | 0.00% | No change | 4,500 | $6K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -41.4% | 4,179 | $6K |
| Osaic Holdings, Inc. | 0.00% | No change | 2,891 | $4K |
| JPMorgan Chase & Co. | 0.00% | No change | 1,596 | $2K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 511 | $685 |
| Allworth Financial LP | 0.00% | No change | 500 | $670 |
| Jones Financial Companies LLLP | 0.00% | No change | 500 | $660 |
| BNP Paribas Financial Markets | 0.00% | No change | 307 | $411 |
| Larson Financial Group LLC | 0.00% | No change | 50 | $67 |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -99.5% | 42 | $56 |
| Cwm, LLC | 0.00% | Reduce -21.9% | 25 | $34 |
| Optiver Holding B.V. | 0.00% | No change | 18 | $24 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 4 | $5 |
| Royal Bank of Canada | 0.00% | Add +1265.2% | 314 | $0 |
"% of holder's portfolio" is MGX's weight in each manager's 13F, not the share of Metagenomi Therapeutics Inc. the manager owns.