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 MNTK 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/MNTK"
Use Arkolith to show who owns MNTK, 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 | $5.9M | 3.5M | ▼−11% Reduced · −423K sh | Q4 2025 | |
| 2 | BlackRock, Inc. | $4.9M | 4.2M | ▼−2.4% Reduced · −105K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $3.1M | 2.7M | ▲New +2.7M sh | Q1 2026 | |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | $2.0M | 1.8M | ▲+2.0% Added · +34K sh | Q1 2026 | |
| 5 | STATE STREET CORP | $1.6M | 1.4M | ▼−1.5% Reduced · −20K sh | Q1 2026 | |
| 6 | BARCLAYS PLC | $1.2M | 1.0M | ▲+850% Added · +930K sh | Q1 2026 | |
| 7 | AMERICAN CENTURY COMPANIES INC | $1.1M | 954K | ▼−0.1% Reduced · −643 sh | Q1 2026 | |
| 8 | DIMENSIONAL FUND ADVISORS LP | $847K | 737K | ▼−12% Reduced · −96K sh | Q1 2026 | |
| 9 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $599K | 521K | ▼−4.4% Reduced · −24K sh | Q1 2026 | |
| 10 | NORTHERN TRUST CORP | $581K | 505K | ▲+8.5% Added · +40K sh | Q1 2026 | |
| 11 | VANGUARD FIDUCIARY TRUST CO | $497K | 432K | ▲New +432K sh | Q1 2026 | |
| 12 | Hosking Partners LLP | $456K | 397K | ▲+0.2% Added · +682 sh | Q1 2026 | |
| 13 | VANGUARD PORTFOLIO MANAGEMENT LLC | $447K | 389K | ▲New +389K sh | Q1 2026 | |
| 14 | RENAISSANCE TECHNOLOGIES LLC | $408K | 355K | ▲+3.5% Added · +12K sh | Q1 2026 | |
| 15 | GOLDMAN SACHS GROUP INC | $381K | 331K | ▲+69% Added · +135K sh | Q1 2026 | |
| 16 | FIRST TRUST ADVISORS LP | $359K | 312K | ▼−7.8% Reduced · −26K sh | Q1 2026 | |
| 17 | MORGAN STANLEY | $301K | 261K | ▼−20% Reduced · −67K sh | Q1 2026 | |
| 18 | MILLENNIUM MANAGEMENT LLC | $238K | 207K | ▲+706% Added · +181K sh | Q1 2026 | |
| 19 | MARSHALL WACE, LLP | $235K | 205K | ▲New +205K sh | Q1 2026 | |
| 20 | Bank of New York Mellon Corp | $225K | 196K | ▼−6.5% Reduced · −14K sh | Q1 2026 | |
| 21 | JPMORGAN CHASE & CO | $193K | 162K | ▼−5.8% Reduced · −10K sh | Q1 2026 | |
| 22 | ALLIANCEBERNSTEIN L.P. | $163K | 98K | —Held | Q1 2026 | |
| 23 | Nuveen, LLC | $161K | 140K | ▲+0.6% Added · +858 sh | Q1 2026 | |
| 24 | D. E. Shaw & Co., Inc. | $136K | 118K | ▼−39% Reduced · −74K sh | Q1 2026 | |
| 25 | Rathbones Group PLC | $117K | 102K | ▲+11% Added · +10K 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 |
|---|---|---|---|---|---|
| Nov 24, 2025 | Frank Sharon R | VP Environ Health & Safety | Tax withholding (F) | 3K | $5K |
| Nov 24, 2024 | Frank Sharon R | VP Environ Health & Safety | Tax withholding (F) | 3K | $12K |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 20 funds | $8.1B |
| BROADCOM INCAVGO | 20 funds | $6.0B |
| ALPHABET INC-CL CGOOG | 20 funds | $4.4B |
| MICRON TECHNOLOGY INCMU | 20 funds | $3.1B |
| VISA INC-CLASS A SHARESV | 20 funds | $2.0B |
| COSTCO WHOLESALE CORPCOST | 20 funds | $1.7B |
| CITIGROUP INCC | 20 funds | $1.4B |
| MORGAN STANLEYMS | 20 funds | $1.2B |
| LAM RESEARCH CORPLRCX | 20 funds | $1.2B |
| BOOKING HOLDINGS INCBKNG | 20 funds | $1.2B |
| BANK OF AMERICA CORPBAC | 20 funds | $1.1B |
| CAPITAL ONE FINANCIAL CORPCOF | 20 funds | $1.1B |
Ranked by how many of MNTK'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 MNTK. 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.