The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query MGTX owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MGTX"
Use Arkolith to show who owns MGTX, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | PERCEPTIVE ADVISORS LLC | $89.3M | 10.3M | —Held | Q1 2026 | |
| 2 | Rubric Capital Management LP | $60.6M | 7.0M | ▲+13% Added · +825K sh | Q1 2026 | |
| 3 | 683 Capital Management, LLC | $21.2M | 2.5M | ▼−4.3% Reduced · −109K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $6.5M | 753K | ▲+3.3% Added · +24K sh | Q1 2026 | |
| 5 | Logos Global Management LP | $6.1M | 700K | ▲New +700K sh | Q1 2026 | |
| 6 | Erste Asset Management GmbH | $5.8M | 720K | ▼−8.9% Reduced · −70K sh | Q1 2026 | |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | $3.4M | 397K | ▲New +397K sh | Q1 2026 | |
| 8 | Hennion & Walsh Asset Management, Inc. | $3.1M | 355K | ▲+15% Added · +46K sh | Q1 2026 | |
| 9 | Woodline Partners LP | $2.6M | 300K | —Held | Q1 2026 | |
| 10 | J. Goldman & Co LP | $1.8M | 206K | ▼−35% Reduced · −113K sh | Q1 2026 | |
| 11 | Jefferies Financial Group Inc. | $1.5M | 167K | ▼−44% Reduced · −131K sh | Q1 2026 | |
| 12 | BLAIR WILLIAM & CO/IL | $1.1M | 125K | ▲~0% Added · +22 sh | Q1 2026 | |
| 13 | CITADEL ADVISORS LLC | $1.0M | 116K | ▼−19% Reduced · −27K sh | Q1 2026 | |
| 14 | Trexquant Investment LP | $845K | 98K | ▲+45% Added · +30K sh | Q1 2026 | |
| 15 | Point72 Asset Management, L.P. | $614K | 71K | ▲New +71K sh | Q1 2026 | |
| 16 | DAVENPORT & Co LLC | $599K | 69K | —Held | Q1 2026 | |
| 17 | TOCQUEVILLE ASSET MANAGEMENT L.P. | $591K | 68K | ▲+2.7% Added · +2K sh | Q1 2026 | |
| 18 | VANGUARD FIDUCIARY TRUST CO | $292K | 34K | ▲New +34K sh | Q1 2026 | |
| 19 | Engineers Gate Manager LP | $232K | 27K | ▼−0.1% Reduced · −39 sh | Q1 2026 | |
| 20 | Beacon Pointe Advisors, LLC | $232K | 27K | ▲+29% Added · +6K sh | Q1 2026 | |
| 21 | CreativeOne Wealth, LLC | $229K | 26K | —Held | Q1 2026 | |
| 22 | MetLife Investment Management, LLC | $197K | 23K | ▲+13% Added · +3K sh | Q1 2026 | |
| 23 | Perigon Wealth Management, LLC | $131K | 15K | ▲+0.9% Added · +140 sh | Q1 2026 | |
| 24 | JACOBS LEVY EQUITY MANAGEMENT, INC | $118K | 14K | ▼−76% Reduced · −43K sh | Q1 2026 | |
| 25 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $106K | 12K | —Held | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 11, 2026 | Hukkelhoven Ellen | Director | Grant (A) | 60K | $0 |
| Jun 11, 2026 | Harris Keith R. | Director | Grant (A) | 106K | $0 |
| Jun 11, 2026 | Yu Debra | Director | Grant (A) | 60K | $0 |
| Jun 11, 2026 | SHENK THOMAS E | Director | Grant (A) | 70K | $0 |
| Jun 11, 2026 | Seligman Nicole | Director | Grant (A) | 60K | $0 |
| Jun 11, 2026 | Mendoza Neil | Director | Grant (A) | 67K | $0 |
| Jun 10, 2026 | Harris Keith R. | Director | Option exercise (M) | 75K | — |
| Jun 10, 2026 | Harris Keith R. | Director | Option exercise (M) | 75K | $0 |
| Mar 24, 2026 | Forbes Alexandria | PRESIDENT & CEO, Director | Sell (S) | 62K | $459K |
| Feb 21, 2026 | Forbes Alexandria | PRESIDENT & CEO, Director | Tax withholding (F) | 33K | $246K |
| Feb 21, 2026 | Forbes Alexandria | PRESIDENT & CEO, Director | Option exercise (M) | 63K | — |
| Feb 21, 2026 | Forbes Alexandria | PRESIDENT & CEO, Director | Option exercise (M) | 63K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 43 funds | $17.2B |
| MICROSOFT CORPMSFT | 42 funds | $20.1B |
| ALPHABET INC-CL AGOOGL | 42 funds | $12.9B |
| ELI LILLY & COLLY | 42 funds | $4.7B |
| UNITEDHEALTH GROUP INCUNH | 42 funds | $2.6B |
| NVIDIA CORPNVDA | 41 funds | $32.0B |
| BROADCOM INCAVGO | 41 funds | $11.7B |
| META PLATFORMS INC-CLASS AMETA | 41 funds | $9.2B |
| MICRON TECHNOLOGY INCMU | 41 funds | $5.2B |
| COSTCO WHOLESALE CORPCOST | 41 funds | $3.9B |
| CHEVRON CORPCVX | 41 funds | $3.0B |
| BOOKING HOLDINGS INCBKNG | 41 funds | $1.7B |
Ranked by how many of MGTX's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MGTX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.