This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MTDR/capital-change-brief"
Use Arkolith's capital_change_brief for MTDR. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $703.7M | 11.1M | ▲+3.1% Added · +336K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $534.8M | 8.5M | ▲New +8.5M sh | Q1 2026 | |
| 3 | DIMENSIONAL FUND ADVISORS LP | $439.0M | 6.9M | ▲+4.2% Added · +278K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $324.3M | 5.1M | ▲+11% Added · +516K sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $320.4M | 5.1M | ▲New +5.1M sh | Q1 2026 | |
| 6 | T. Rowe Price Investment Management, Inc. | Withheld | 3.7M | ▲+8.1% Added · +280K sh | Q1 2026 | |
| 7 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $191.8M | 3.0M | ▼−9.8% Reduced · −330K sh | Q1 2026 | |
| 8 | ALLIANCEBERNSTEIN L.P. | $112.8M | 2.7M | ▲+3.0% Added · +78K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $147.2M | 2.3M | ▲+4.1% Added · +93K sh | Q1 2026 | |
| 10 | AMERICAN CENTURY COMPANIES INC | $140.0M | 2.2M | ▲+22% Added · +401K sh | Q1 2026 | |
| 11 | MORGAN STANLEY | $137.1M | 2.2M | ▼−7.7% Reduced · −182K sh | Q1 2026 | |
| 12 | FIRST TRUST ADVISORS LP | $100.8M | 1.6M | ▲+103% Added · +811K sh | Q1 2026 | |
| 13 | AQR CAPITAL MANAGEMENT LLC | $97.3M | 1.5M | ▲+38% Added · +422K sh | Q1 2026 | |
| 14 | SILVERCREST ASSET MANAGEMENT GROUP LLC | $88.4M | 1.4M | ▼−7.9% Reduced · −121K sh | Q1 2026 | |
| 15 | CIBC Bancorp USA Inc. | $86.3M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 16 | BECK MACK & OLIVER LLC | $85.8M | 1.4M | ▼−5.2% Reduced · −74K sh | Q1 2026 | |
| 17 | Copeland Capital Management, LLC | $82.4M | 1.3M | ▼−8.6% Reduced · −122K sh | Q1 2026 | |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $80.6M | 1.3M | ▲+4.3% Added · +52K sh | Q1 2026 | |
| 19 | Bank of New York Mellon Corp | $74.9M | 1.2M | ▲+2.3% Added · +26K sh | Q1 2026 | |
| 20 | VICTORY CAPITAL MANAGEMENT INC | $65.7M | 1.0M | ▼−13% Reduced · −159K sh | Q1 2026 | |
| 21 | NORTHERN TRUST CORP | $64.3M | 1.0M | ▲+2.5% Added · +25K sh | Q1 2026 | |
| 22 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $66.7M | 1.0M | ▼−20% Reduced · −257K sh | Q1 2026 | |
| 23 | Clearbridge Investments, LLC | $63.6M | 1.0M | ▼−43% Reduced · −772K sh | Q1 2026 | |
| 24 | FRANKLIN RESOURCES INC | $63.0M | 997K | ▲+19% Added · +159K sh | Q1 2026 | |
| 25 | Nuveen, LLC | $59.1M | 935K | ▼−0.5% Reduced · −5K 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 15, 2026 | Baty Robert Gaines | Director | Buy (P) | 500 | $26K |
| Jun 11, 2026 | Baribault Reynald | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | Appel Shelley F | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | Baty Robert Gaines | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | PARKER TIMOTHY E. | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | Ward Susan M | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | STEWART KENNETH L. | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | Harvey Paul W | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | Ehrman Monika U | Director | Grant (A) | 4K | $0 |
| Jun 11, 2026 | Byerley William M | Director | Grant (A) | 4K | $0 |
| Jun 9, 2026 | Stetson Glenn W | EVP and COO | Buy (P) | 500 | $27K |
| Jun 9, 2026 | Foran Joseph Wm | Chairman and CEO, Director | Buy (P) | 2K | $106K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 160 funds | $58.8B |
| ALPHABET INC-CL AGOOGL | 160 funds | $38.8B |
| AMAZON.COM INCAMZN | 159 funds | $41.4B |
| META PLATFORMS INC-CLASS AMETA | 159 funds | $25.4B |
| APPLE INCAAPL | 157 funds | $71.3B |
| JPMORGAN CHASE & COJPM | 157 funds | $18.5B |
| NVIDIA CORPNVDA | 156 funds | $76.0B |
| ELI LILLY & COLLY | 156 funds | $16.0B |
| CHEVRON CORPCVX | 156 funds | $8.1B |
| BROADCOM INCAVGO | 155 funds | $29.3B |
| EXXON MOBIL CORPXOM | 155 funds | $12.4B |
| ALPHABET INC-CL CGOOG | 154 funds | $25.1B |
Ranked by how many of MTDR'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 MTDR. 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.