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/MTZ/capital-change-brief"
Use Arkolith's capital_change_brief for MTZ. 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. | $2.4B | 7.3M | ▲+2.8% Added · +198K sh | Q1 2026 | |
| 2 | PECONIC PARTNERS LLC | $1.2B | 3.6M | ▲+124% Added · +2.0M sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $902.3M | 2.8M | ▲New +2.8M sh | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $891.2M | 2.8M | ▲New +2.8M sh | Q1 2026 | |
| 5 | Hill City Capital, LP | $693.3M | 2.2M | —Held | Q1 2026 | |
| 6 | STATE STREET CORP | $601.6M | 1.9M | ▲+2.4% Added · +43K sh | Q1 2026 | |
| 7 | VICTORY CAPITAL MANAGEMENT INC | $512.4M | 1.6M | ▼−40% Reduced · −1.0M sh | Q1 2026 | |
| 8 | LONE PINE CAPITAL LLC | $492.6M | 1.5M | ▲New +1.5M sh | Q1 2026 | |
| 9 | FIRST TRUST ADVISORS LP | $454.2M | 1.4M | ▲+7.6% Added · +100K sh | Q1 2026 | |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $441.5M | 1.4M | ▲+12% Added · +151K sh | Q1 2026 | |
| 11 | BANK OF AMERICA CORP /DE/ | $427.9M | 1.3M | ▲+6.0% Added · +75K sh | Q1 2026 | |
| 12 | Hood River Capital Management LLC | $416.8M | 1.3M | ▼−13% Reduced · −188K sh | Q1 2026 | |
| 13 | NORDEA INVESTMENT MANAGEMENT AB | $228.8M | 734K | ▼−36% Reduced · −417K sh | Q1 2026 | |
| 14 | DIMENSIONAL FUND ADVISORS LP | $235.3M | 732K | ▼−16% Reduced · −139K sh | Q1 2026 | |
| 15 | Electron Capital Partners, LLC | $229.4M | 713K | ▼−11% Reduced · −91K sh | Q1 2026 | |
| 16 | AQR CAPITAL MANAGEMENT LLC | $209.5M | 660K | ▼−9.7% Reduced · −71K sh | Q1 2026 | |
| 17 | Bank of New York Mellon Corp | $211.1M | 656K | ▲+3.1% Added · +20K sh | Q1 2026 | |
| 18 | CANADA PENSION PLAN INVESTMENT BOARD | $205.6M | 639K | ▲+326% Added · +489K sh | Q1 2026 | |
| 19 | FMR LLC | $202.0M | 628K | ▼−5.5% Reduced · −37K sh | Q1 2026 | |
| 20 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $194.5M | 605K | ▲+8.4% Added · +47K sh | Q1 2026 | |
| 21 | MORGAN STANLEY | $188.8M | 587K | ▲+20% Added · +97K sh | Q1 2026 | |
| 22 | COATUE MANAGEMENT LLC | $187.8M | 584K | ▼−14% Reduced · −94K sh | Q1 2026 | |
| 23 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $164.5M | 511K | ▲+1.8% Added · +9K sh | Q1 2026 | |
| 24 | MILLENNIUM MANAGEMENT LLC | $161.9M | 503K | ▼−31% Reduced · −229K sh | Q1 2026 | |
| 25 | Qube Research & Technologies Ltd | $156.2M | 485K | ▲+35% Added · +125K 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 3, 2026 | Csiszar Ernst N | Director | Sell (S) | 7K | $2.4M |
| May 15, 2026 | Campbell C Robert | Director | Grant (A) | 95 | $0 |
| May 15, 2026 | Dwyer Robert J | Director | Grant (A) | 95 | $0 |
| May 15, 2026 | Dwyer Robert J | Director | Tax withholding (F) | 21 | $9K |
| May 15, 2026 | Csiszar Ernst N | Director | Grant (A) | 104 | $0 |
| May 15, 2026 | Csiszar Ernst N | Director | Tax withholding (F) | 23 | $10K |
| May 15, 2026 | JOHNSON JULIA L | Director | Grant (A) | 95 | $0 |
| May 15, 2026 | Palomarez Javier Alberto | Director | Grant (A) | 95 | $0 |
| May 15, 2026 | Palomarez Javier Alberto | Director | Tax withholding (F) | 21 | $9K |
| May 15, 2026 | Parker Ava L | Director | Grant (A) | 121 | $0 |
| May 15, 2026 | Parker Ava L | Director | Tax withholding (F) | 14 | $6K |
| May 4, 2026 | Campbell C Robert | Director | Sell (S) | 3K | $1.3M |
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 264 funds | $194.3B |
| NVIDIA CORPNVDA | 259 funds | $350.7B |
| MICROSOFT CORPMSFT | 258 funds | $247.8B |
| ALPHABET INC-CL AGOOGL | 256 funds | $152.9B |
| BROADCOM INCAVGO | 256 funds | $143.7B |
| META PLATFORMS INC-CLASS AMETA | 255 funds | $102.9B |
| VISA INC-CLASS A SHARESV | 252 funds | $52.7B |
| APPLE INCAAPL | 249 funds | $261.5B |
| ELI LILLY & COLLY | 247 funds | $70.1B |
| MICRON TECHNOLOGY INCMU | 247 funds | $34.7B |
| TESLA INCTSLA | 246 funds | $67.7B |
| JPMORGAN CHASE & COJPM | 245 funds | $57.7B |
Ranked by how many of MTZ'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 MTZ. 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.