METAGENOMI INC MGX
COM · Common Stock · CUSIP 59102M104
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersEmeryville, CA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 37.8m as of 2026-08-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.19.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2024 | 51 |
| Q2 2024 | 55 |
| Q3 2024 | 68 |
| Q4 2024 | 78 |
| Q1 2025 | 80 |
| Q2 2025 | 70 |
| Q3 2025 | 58 |
| Q4 2025 | 56 |
| Q1 2026 | 48 |
| Q2 2026 | 43 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 42 | 19 |
| Q4 2024 | 51 | 26 |
| Q1 2025 | 38 | 27 |
| Q2 2025 | 36 | 46 |
| Q3 2025 | 21 | 40 |
| Q4 2025 | 25 | 26 |
| Q1 2026 | 11 | 28 |
| Q2 2026 | 16 | 21 |
Biggest buyers
| WELLS FARGO & COMPANY/MN | Added | +177.4k |
| Marquette Asset Management, LLC | New | +72.1k |
| Man Group plc | Added | +30.5k |
| BlackRock, Inc. | Added | +27.5k |
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +19.8k |
| TWO SIGMA INVESTMENTS, LP | Added | +16.9k |
| Qube Research & Technologies Ltd | New | +16.9k |
| TWO SIGMA SECURITIES, LLC | New | +15.2k |
| XTX Topco Ltd | Added | +15.1k |
| Peapod Lane Capital LLC | Added | +8.3k |
Biggest sellers
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | -222.2k |
| JANE STREET GROUP, LLC | Reduced | -113.0k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -69.5k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -56.1k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -45.5k |
| MARSHALL WACE, LLP | Sold out | -27.5k |
| MORGAN STANLEY | Reduced | -22.3k |
| LPL Financial LLC | Sold out | -16.8k |
| Point72 Asset Management, L.P. | Sold out | -11.7k |
| HRT FINANCIAL LP | Sold out | -10.7k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Thomas Brian C. 13G · exempt (held before listing) new · filed 2026-09-10 | 7.3% |
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $2.9k | — |
| Q1 2025 | 0 | — | 2 | $5.1k | — |
| Q2 2025 | 0 | — | 5 | $42.3k | — |
| Q3 2025 | 0 | — | 4 | $11.0k | — |
| Q4 2025 | 0 | — | 4 | $12.8k | — |
| Q1 2026 | 0 | — | 3 | $5.9k | — |
| Q2 2026 | 0 | — | 3 | $9.3k | — |
| Q3 2026 | 1 | $23.4k | 3 | $5.1k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-09 | Reid Laurence Director | Bought | $23.4k20.0k shares |
| 2026-09-08 | Irish Jian Officer, director | Sold | $2.5k2.1k shares |
| 2026-09-08 | Wapnick Pamela Chief Financial Officer | Sold | $2.2k1.9k shares |
| 2026-09-08 | Wein Matthew Officer | Sold | $415358 shares |
| 2026-06-05 | Irish Jian Officer, director | Sold | $4.9k3.7k shares |
| 2026-06-05 | Wapnick Pamela Chief Financial Officer | Sold | $3.7k2.9k shares |
| 2026-06-05 | Wein Matthew Officer | Sold | $725558 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.1m $1.3m | Added +19.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 742.4k $883.5k | Reduced -45.5k |
| Catalio Capital Management, LP 0.12% of their portfolio | 529.0k $629.5k | Unchanged |
| Peapod Lane Capital LLC 0.42% of their portfolio | 525.0k $624.8k | Added +8.3k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 513.7k $611.3k | Added +16.9k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 400.3k $476.4k | Added +4.5k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 379.5k $451.6k | Added +177.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 288.7k $343.7k | Reduced -69.5k |
| PURA VIDA INVESTMENTS, LLC 0.85% of their portfolio | 264.4k $314.6k | Unchanged |
| BlackRock, Inc. 0.00% of their portfolio | 257.6k $306.6k | Added +27.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 171.3k $203.8k | Added +1.1k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio | 160.0k $190.4k | Reduced -222.2k |
| STATE STREET CORP 0.00% of their portfolio | 119.8k $142.6k | Reduced -577 |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 114.0k $135.7k | Reduced -56.1k |
| Man Group plc 0.00% of their portfolio | 109.1k $129.9k | Added +30.5k |
| Resolute Advisors LLC 0.03% of their portfolio | 89.9k $107.0k | Unchanged |
| Marquette Asset Management, LLC 0.01% of their portfolio | 72.1k $85.8k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 68.9k $82.0k | Reduced -6.2k |
| RBF Capital, LLC 0.00% of their portfolio | 64.0k $76.2k | Unchanged |
| XTX Topco Ltd 0.00% of their portfolio | 55.7k $66.3k | Added +15.1k |
| BBR PARTNERS, LLC 0.00% of their portfolio | 53.4k $63.5k | Unchanged |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 38.4k $45.7k | Reduced -113.0k |
| Fortitude Advisory Group L.L.C. 0.02% of their portfolio | 37.2k $44.3k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 17.9k $21.2k | Added +858 |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 16.9k $20.1k | New |
| UBS Group AG 0.00% of their portfolio | 15.8k $18.8k | Reduced -305 |
| TWO SIGMA SECURITIES, LLC 0.00% of their portfolio | 15.2k $18.1k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 13.4k $15.9k | Unchanged |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 12.8k $15.2k | Unchanged |
| Peak Planning Group, LLC 0.00% of their portfolio | 12.5k $14.9k | Unchanged |
| MEEDER ASSET MANAGEMENT INC 0.00% of their portfolio | 5.5k $6.5k | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 5.3k $6.3k | Reduced -22.3k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 5.3k $6.3k | Added +5.3k |
| US BANCORP \DE\ 0.00% of their portfolio | 4.5k $5.4k | Unchanged |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 1.9k $2.2k | Reduced -1.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.6k $1.9k | Unchanged |
| FMR LLC 0.00% of their portfolio | 588 $700 | Reduced -4.1k |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 500 $625 | Unchanged |
| Allworth Financial LP 0.00% of their portfolio | 500 $595 | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 207 $246 | Reduced -100 |
| BARCLAYS PLC 0.00% of their portfolio | 167 $199 | New |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 8 $10 | Added +4 |
| Optiver Holding B.V. 0.00% of their portfolio | 2 $2 | Reduced -16 |