Who owns Metagenomi, Inc. Common Stock?
Institutional ownership of MGX from SEC Form 13F filings across 30 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
30
13F holders
$4.6M
value, 2026 filers
10.2%
of shares outstanding (3.8M sh)
4
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of MGX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | $1.3M | 0.0% | 2.9% | -49.1% |
| 2 | Catalio Capital Management, LP | 528,993 | $629,502 | 0.1% | 1.4% | 0.0% |
| 3 | TWO SIGMA INVESTMENTS, LP | 513,701 | $611,304 | 0.0% | 1.4% | +3.4% |
| 4 | WELLS FARGO & COMPANY/MN | 379,508 | $451,614 | 0.0% | 1% | +87.7% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 288,665 | $343,672 | 0.0% | 0.8% | -19.4% |
| 6 | BlackRock, Inc. | 257,631 | $306,581 | 0.0% | 0.7% | +11.9% |
| 7 | VANGUARD FIDUCIARY TRUST CO | 171,251 | $203,789 | 0.0% | 0.5% | +0.6% |
| 8 | MILLENNIUM MANAGEMENT LLC | 114,025 | $135,690 | 0.0% | 0.3% | -33.0% |
| 9 | Man Group plc | 109,130 | $129,865 | 0.0% | 0.3% | +38.8% |
| 10 | Marquette Asset Management, LLCNEW | 72,121 | $85,824 | 0.0% | 0.2% | new |
| 11 | NORTHERN TRUST CORP | 68,938 | $82,036 | 0.0% | 0.2% | -8.3% |
| 12 | RBF Capital, LLC | 64,021 | $76,185 | 0.0% | 0.2% | -50.0% |
| 13 | JANE STREET GROUP, LLC | 38,396 | $45,691 | 0.0% | 0.1% | -74.6% |
| 14 | Fortitude Advisory Group L.L.C. | 37,190 | $44,256 | 0.0% | 0.1% | 0.0% |
| 15 | CITADEL ADVISORS LLC | 17,851 | $21,243 | 0.0% | 0% | +5.0% |
| 16 | Qube Research & Technologies LtdNEW | 16,850 | $20,052 | 0.0% | 0% | new |
| 17 | UBS Group AG | 15,793 | $18,794 | 0.0% | 0% | -1.9% |
| 18 | TWO SIGMA SECURITIES, LLCNEW | 15,173 | $18,056 | 0.0% | 0% | new |
| 19 | Vanguard Global Advisers, LLC | 13,392 | $15,936 | 0.0% | 0% | 0.0% |
| 20 | Peak Planning Group, LLC | 12,500 | $14,875 | 0.0% | 0% | 0.0% |
| 21 | MORGAN STANLEY | 5,302 | $6,309 | 0.0% | 0% | -80.8% |
| 22 | Tower Research Capital LLC (TRC) | 5,300 | $6,307 | 0.0% | 0% | +12519.0% |
| 23 | US BANCORP \DE\ | 4,500 | $5,355 | 0.0% | 0% | 0.0% |
| 24 | OSAIC HOLDINGS, INC. | 1,891 | $2,250 | 0.0% | 0% | -34.6% |
| 25 | JPMORGAN CHASE & CO | 1,596 | $1,915 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.