798 tracked 13F filers disclose a position in MTZ as of the latest SEC 13F filings, a combined $18.5B in reported value. 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.
| # | 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 | →First observed position No prior filed position | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $891.2M | 2.8M | →First observed position No prior filed position | Q1 2026 | |
| 5 | STATE STREET CORP | $934.0M | 2.2M | ▲+20% Added · +375K sh | Q2 2026 | |
| 6 | Hill City Capital, LP | $896.6M | 2.2M | —Held | Q2 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 | BANK OF AMERICA CORP /DE/ | $427.9M | 1.3M | ▲+6.0% Added · +75K sh | Q1 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $530.4M | 1.3M | ▼−6.8% Reduced · −94K sh | Q2 2026 | |
| 12 | Hood River Capital Management LLC | $488.4M | 1.2M | ▼−9.4% Reduced · −121K sh | Q2 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.
Last quarter, 7 funds opened a new position in MTZ and 17 added to an existing one, while 31 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 485 funds | $235.4B |
| NVIDIA CORPNVDA | 477 funds | $441.7B |
| MICROSOFT CORPMSFT | 477 funds | $304.6B |
| ALPHABET INC-CL AGOOGL | 474 funds | $194.9B |
| BROADCOM INCAVGO | 466 funds | $182.6B |
| APPLE INCAAPL | 465 funds | $336.6B |
| META PLATFORMS INC-CLASS AMETA | 462 funds | $127.7B |
| ELI LILLY & COLLY | 455 funds | $91.4B |
| MICRON TECHNOLOGY INCMU | 455 funds | $53.8B |
| JPMORGAN CHASE & COJPM | 443 funds | $71.4B |
| ALPHABET INC-CL CGOOG | 441 funds | $142.7B |
| VISA INC-CLASS A SHARESV | 441 funds | $71.0B |
Ranked by how many of MTZ's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 3, 2026 | Csiszar Ernst N | Director | Sell (S) | 7K | $2.4M |
| May 4, 2026 | Campbell C Robert | Director | Sell (S) | 3K | $1.3M |
| Mar 25, 2026 | Palomarez Javier Alberto | Director | Sell (S) | 950 | $309K |
| Mar 3, 2026 | Csiszar Ernst N | Director | Sell (S) | 7K | $2.0M |
| Nov 3, 2025 | Love Timothy Michael | CAO | Sell (S) | 2K | $398K |
| Sep 29, 2025 | Campbell C Robert | Director | Sell (S) | 2K | $421K |
| Sep 18, 2025 | Apple Robert E | COO | Sell (S) | 10K | $2.0M |
| Sep 18, 2025 | Apple Robert E | COO | Sell (S) | 100 | $20K |
| Sep 11, 2025 | Campbell C Robert | Director | Sell (S) | 3K | $571K |
| Aug 5, 2025 | de Cardenas Alberto | EVP, General Counsel | Sell (S) | 10K | $1.8M |
| Aug 5, 2025 | de Cardenas Alberto | EVP, General Counsel | Sell (S) | 100 | $18K |
| Jul 16, 2025 | Apple Robert E | COO | Sell (S) | 10K | $1.8M |
Connected entities for MTZ
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.
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.