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 MTG 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/MTG"
Use Arkolith to show who owns MTG, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $870.0M | 29.8M | ▼−3.3% Reduced · −1.0M sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $607.5M | 23.1M | ▲+0.4% Added · +99K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $471.3M | 18.0M | ▲New +18.0M sh | Q1 2026 | |
| 4 | DIMENSIONAL FUND ADVISORS LP | $358.4M | 13.7M | ▼−1.3% Reduced · −184K sh | Q1 2026 | |
| 5 | JPMORGAN CHASE & CO | $292.0M | 11.2M | ▼−0.3% Reduced · −30K sh | Q1 2026 | |
| 6 | AQR CAPITAL MANAGEMENT LLC | $288.4M | 11.0M | ▼−5.4% Reduced · −628K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $254.1M | 9.7M | ▲New +9.7M sh | Q1 2026 | |
| 8 | STATE STREET CORP | $205.5M | 7.8M | ▼−1.6% Reduced · −132K sh | Q1 2026 | |
| 9 | AMERICAN CENTURY COMPANIES INC | $155.4M | 5.9M | ▲+30% Added · +1.4M sh | Q1 2026 | |
| 10 | Allianz Asset Management GmbH | $119.8M | 4.6M | ▼−8.9% Reduced · −445K sh | Q1 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $118.6M | 4.5M | ▼−16% Reduced · −853K sh | Q1 2026 | |
| 12 | FIRST TRUST ADVISORS LP | $112.5M | 4.3M | ▼−7.0% Reduced · −322K sh | Q1 2026 | |
| 13 | NORTHERN TRUST CORP | $110.6M | 4.2M | ▲+0.3% Added · +15K sh | Q1 2026 | |
| 14 | CAISSE DE DEPOT ET PLACEMENT DU QUEBEC | $98.6M | 3.8M | ▲+3.8% Added · +137K sh | Q1 2026 | |
| 15 | NORGES BANK | $96.2M | 3.3M | ▼−4.3% Reduced · −149K sh | Q4 2025 | |
| 16 | FRANKLIN RESOURCES INC | $89.1M | 3.4M | ▲+41% Added · +995K sh | Q1 2026 | |
| 17 | Clearbridge Investments, LLC | $78.2M | 3.0M | ▼−26% Reduced · −1.0M sh | Q1 2026 | |
| 18 | GOLDMAN SACHS GROUP INC | $69.3M | 2.6M | ▲+3.2% Added · +82K sh | Q1 2026 | |
| 19 | MORGAN STANLEY | $67.8M | 2.6M | ▲+19% Added · +420K sh | Q1 2026 | |
| 20 | NewEdge Wealth, LLC | $64.4M | 2.5M | ▲+12% Added · +269K sh | Q1 2026 | |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $61.6M | 2.3M | ▲+0.1% Added · +4K sh | Q1 2026 | |
| 22 | Bank of New York Mellon Corp | $50.9M | 1.9M | ▼−4.1% Reduced · −83K sh | Q1 2026 | |
| 23 | ASSETMARK, INC | $50.6M | 1.9M | ▼−5.5% Reduced · −113K sh | Q1 2026 | |
| 24 | Quantinno Capital Management LP | $39.4M | 1.5M | ▼−17% Reduced · −303K sh | Q1 2026 | |
| 25 | Robeco Institutional Asset Management B.V. | $37.7M | 1.4M | ▲+12% Added · +159K sh | 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 8, 2026 | Miosi Salvatore A | President & COO | Sell (S) | 30K | $761K |
| Mar 6, 2026 | CULVER CURT S | Director | Grant (A) | 28 | — |
| Mar 6, 2026 | Hartzell Jay C. | Director | Grant (A) | 196 | — |
| Mar 6, 2026 | Hartzell Jay C. | Director | Grant (A) | 109 | — |
| Mar 6, 2026 | Sculley Sheryl L. | Director | Grant (A) | 109 | — |
| Mar 6, 2026 | Lowman Teresita M. | Director | Grant (A) | 190 | — |
| Mar 6, 2026 | CHAPLIN C EDWARD | Director | Grant (A) | 277 | — |
| Mar 6, 2026 | Klein Martin P | Director | Grant (A) | 36 | — |
| Mar 6, 2026 | Zandi Mark | Director | Grant (A) | 269 | — |
| Mar 6, 2026 | Sculley Sheryl L. | Director | Grant (A) | 131 | — |
| Mar 6, 2026 | Zandi Mark | Director | Grant (A) | 28 | — |
| Mar 6, 2026 | CHAPLIN C EDWARD | Director | Grant (A) | 146 | — |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 181 funds | $64.7B |
| ALPHABET INC-CL AGOOGL | 178 funds | $42.9B |
| APPLE INCAAPL | 177 funds | $80.1B |
| BROADCOM INCAVGO | 177 funds | $33.4B |
| META PLATFORMS INC-CLASS AMETA | 177 funds | $29.8B |
| MICRON TECHNOLOGY INCMU | 177 funds | $10.9B |
| LAM RESEARCH CORPLRCX | 177 funds | $9.1B |
| AMAZON.COM INCAMZN | 176 funds | $49.3B |
| JPMORGAN CHASE & COJPM | 176 funds | $20.7B |
| ELI LILLY & COLLY | 176 funds | $17.1B |
| UNITEDHEALTH GROUP INCUNH | 176 funds | $7.0B |
| GILEAD SCIENCES INCGILD | 176 funds | $4.9B |
Ranked by how many of MTG'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 MTG. 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.