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 MTUS 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/MTUS"
Use Arkolith to show who owns MTUS, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $92.4M | 5.7M | ▼−16% Reduced · −1.1M sh | Q1 2026 | |
| 2 | VANGUARD GROUP INC | $49.4M | 2.9M | ▲+0.7% Added · +20K sh | Q4 2025 | |
| 3 | STATE STREET CORP | $45.7M | 2.8M | ▲+21% Added · +480K sh | Q1 2026 | |
| 4 | DIMENSIONAL FUND ADVISORS LP | $41.6M | 2.5M | ▼−1.3% Reduced · −33K sh | Q1 2026 | |
| 5 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $30.1M | 1.8M | ▼−6.9% Reduced · −137K sh | Q1 2026 | |
| 6 | AMERICAN CENTURY COMPANIES INC | $27.1M | 1.7M | ▲+5.9% Added · +93K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $25.5M | 1.6M | ▲New +1.6M sh | Q1 2026 | |
| 8 | SYSTEMATIC FINANCIAL MANAGEMENT LP | $22.3M | 1.4M | ▼−2.0% Reduced · −28K sh | Q1 2026 | |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | $17.6M | 1.1M | ▲New +1.1M sh | Q1 2026 | |
| 10 | DONALD SMITH & CO., INC. | $17.5M | 1.1M | ▲+11% Added · +108K sh | Q1 2026 | |
| 11 | RENAISSANCE TECHNOLOGIES LLC | $16.7M | 1.0M | ▼−3.7% Reduced · −39K sh | Q1 2026 | |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | $14.4M | 879K | ▲+2.2% Added · +19K sh | Q1 2026 | |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $13.3M | 812K | ▼−8.0% Reduced · −70K sh | Q1 2026 | |
| 14 | AMERIPRISE FINANCIAL INC | $10.6M | 650K | ▲+0.5% Added · +3K sh | Q1 2026 | |
| 15 | TWO SIGMA INVESTMENTS, LP | $9.0M | 551K | ▲+314% Added · +418K sh | Q1 2026 | |
| 16 | OpenArc Corporate Advisory, LLC | $8.9M | 546K | ▲+33% Added · +136K sh | Q1 2026 | |
| 17 | MORGAN STANLEY | $7.2M | 440K | ▲+13% Added · +52K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $6.3M | 384K | ▲+2.8% Added · +11K sh | Q1 2026 | |
| 19 | EMERALD ADVISERS, LLC | $6.1M | 376K | ▲New +376K sh | Q1 2026 | |
| 20 | KENNEDY CAPITAL MANAGEMENT LLC | $5.5M | 339K | ▲New +339K sh | Q1 2026 | |
| 21 | GOLDMAN SACHS GROUP INC | $5.4M | 330K | ▲+15% Added · +44K sh | Q1 2026 | |
| 22 | Russell Investments Group, Ltd. | $5.3M | 326K | ▲+38% Added · +90K sh | Q1 2026 | |
| 23 | JANE STREET GROUP, LLC | $5.2M | 316K | ▲New +316K sh | Q1 2026 | |
| 24 | SEI INVESTMENTS CO | $4.7M | 288K | ▲+32% Added · +70K sh | Q1 2026 | |
| 25 | EMERALD MUTUAL FUND ADVISERS TRUST | $3.9M | 238K | ▲New +238K 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 16, 2026 | Zaranec John M | EVP, Chief Financial Officer | Tax withholding (F) | 5K | $104K |
| Mar 2, 2026 | WESTBROOKS KRISTOPHER R | President & COO | Grant (A) | 29K | $0 |
| Mar 2, 2026 | Zaranec John M | EVP, Chief Financial Officer | Grant (A) | 16K | $0 |
| Mar 2, 2026 | Williams Michael S | Chief Executive Officer, Director | Grant (A) | 78K | $0 |
| Mar 2, 2026 | Raketich Kevin A | EVP, Chief Commercial Officer | Grant (A) | 20K | $0 |
| Mar 2, 2026 | SYRVALIN KRISTINE C | EVP General Counsel | Grant (A) | 20K | $0 |
| Mar 2, 2026 | Yacobozzi Nicholas A | Chief Accounting Officer | Grant (A) | 7K | $0 |
| Mar 1, 2026 | Williams Michael S | Chief Executive Officer, Director | Tax withholding (F) | 29K | $495K |
| Mar 1, 2026 | Yacobozzi Nicholas A | Chief Accounting Officer | Tax withholding (F) | 3K | $48K |
| Mar 1, 2026 | Raketich Kevin A | EVP, Chief Commercial Officer | Tax withholding (F) | 5K | $87K |
| Mar 1, 2026 | WESTBROOKS KRISTOPHER R | President & COO | Tax withholding (F) | 8K | $140K |
| Mar 1, 2026 | SYRVALIN KRISTINE C | EVP General Counsel | Tax withholding (F) | 7K | $124K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 59 funds | $25.4B |
| AMAZON.COM INCAMZN | 59 funds | $18.3B |
| APPLE INCAAPL | 58 funds | $30.8B |
| ALPHABET INC-CL AGOOGL | 58 funds | $16.8B |
| BROADCOM INCAVGO | 58 funds | $12.9B |
| JPMORGAN CHASE & COJPM | 58 funds | $7.9B |
| TESLA INCTSLA | 58 funds | $7.3B |
| MASTERCARD INC - AMA | 58 funds | $5.0B |
| COSTCO WHOLESALE CORPCOST | 58 funds | $4.6B |
| PALANTIR TECHNOLOGIES INC-APLTR | 58 funds | $2.7B |
| META PLATFORMS INC-CLASS AMETA | 57 funds | $10.9B |
| ELI LILLY & COLLY | 57 funds | $6.8B |
Ranked by how many of MTUS'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 MTUS. 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.