MGX Metagenomi Therapeutics, Inc.
Metagenomi Therapeutics, Inc. (MGX) Institutional Ownership
What the institutions did with MGX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | 17.2% |
| RENAISSANCE TECHNOLOGIES LLC | 742.4K | 11.9% |
| Catalio Capital Management, LP | 529.0K | 8.4% |
| Peapod Lane Capital LLC | 525.0K | 8.4% |
| TWO SIGMA INVESTMENTS, LP | 513.7K | 8.2% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 400.3K | 6.4% |
| WELLS FARGO & COMPANY/MN | 379.5K | 6.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 288.7K | 4.6% |
| PURA VIDA INVESTMENTS, LLC | 264.4K | 4.2% |
| BlackRock, Inc. | 257.6K | 4.1% |
| VANGUARD FIDUCIARY TRUST CO | 171.3K | 2.7% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 160.0K | 2.6% |
| STATE STREET CORP | 119.9K | 1.9% |
| MILLENNIUM MANAGEMENT LLC | 114.0K | 1.8% |
| Man Group plc | 109.1K | 1.7% |
| Resolute Advisors LLC | 89.9K | 1.4% |
| Marquette Asset Management, LLC | 72.1K | 1.2% |
| NORTHERN TRUST CORP | 68.9K | 1.1% |
| RBF Capital, LLC | 64.0K | 1.0% |
| XTX Topco Ltd | 55.7K | 0.9% |
| BBR PARTNERS, LLC | 53.4K | 0.9% |
| JANE STREET GROUP, LLC | 38.4K | 0.6% |
| Fortitude Advisory Group L.L.C. | 37.2K | 0.6% |
| CITADEL ADVISORS LLC | 17.9K | 0.3% |
| Qube Research & Technologies Ltd | 16.9K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 382.2K | 160.0K | -222.2K |
| WELLS FARGO & COMPANY/MN | Increased | 202.1K | 379.5K | +177.4K |
| JANE STREET GROUP, LLC | Reduced | 151.4K | 38.4K | -113.0K |
| Marquette Asset Management, LLC | New | 0 | 72.1K | +72.1K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 358.2K | 288.7K | -69.5K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 170.1K | 114.0K | -56.1K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 787.9K | 742.4K | -45.5K |
| Man Group plc | Increased | 78.6K | 109.1K | +30.5K |
| MARSHALL WACE, LLP | Sold Out | 27.5K | 0 | -27.5K |
| BlackRock, Inc. | Increased | 230.1K | 257.6K | +27.5K |
| MORGAN STANLEY | Reduced | 27.6K | 5.3K | -22.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.1M | 1.1M | +19.8K |
| TWO SIGMA INVESTMENTS, LP | Increased | 496.8K | 513.7K | +16.9K |
| Qube Research & Technologies Ltd | New | 0 | 16.9K | +16.9K |
| LPL Financial LLC | Sold Out | 16.8K | 0 | -16.8K |
| TWO SIGMA SECURITIES, LLC | New | 0 | 15.2K | +15.2K |
| XTX Topco Ltd | Increased | 40.6K | 55.7K | +15.1K |
| Point72 Asset Management, L.P. | Sold Out | 11.7K | 0 | -11.7K |
| HRT FINANCIAL LP | Sold Out | 10.7K | 0 | -10.7K |
| Peapod Lane Capital LLC | Increased | 516.8K | 525.0K | +8.3K |
| NORTHERN TRUST CORP | Reduced | 75.2K | 68.9K | -6.2K |
| Tower Research Capital LLC (TRC) | Increased | 42 | 5.3K | +5.3K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 395.8K | 400.3K | +4.5K |
| Russell Investments Group, Ltd. | Sold Out | 4.2K | 0 | -4.2K |
| FMR LLC | Reduced | 4.7K | 588 | -4.1K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 170.2K | 171.3K | +1.1K |
| OSAIC HOLDINGS, INC. | Reduced | 2.9K | 1.9K | -1.0K |
| CITADEL ADVISORS LLC | Increased | 17.0K | 17.9K | +858 |
| STATE STREET CORP | Reduced | 120.4K | 119.9K | -577 |
| NISA INVESTMENT ADVISORS, LLC | Sold Out | 511 | 0 | -511 |
| ROYAL BANK OF CANADA | Sold Out | 314 | 0 | -314 |
| UBS Group AG | Reduced | 16.1K | 15.8K | -305 |
| BARCLAYS PLC | New | 0 | 167 | +167 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 307 | 207 | -100 |
| Larson Financial Group LLC | Sold Out | 50 | 0 | -50 |
| Optiver Holding B.V. | Reduced | 18 | 2 | -16 |
| Caitong International Asset Management Co., Ltd | Increased | 4 | 8 | +4 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.