MATERION Corp MTRN
CIK 0001104657 · CUSIP 576690101
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $410.34M 3,300,636 shares | 0.01% | +28.20K(+0.90%)Added | SEC filing ↗ Feb 12, 2026 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $291.42M 2,344,101 shares | 0.00% | -11.88K(-0.50%)Reduced | SEC filing ↗ Jan 29, 2026 | ▾ |
| 03 | Capital Research Global Investors CIK 1422848 · View history | $235.45M 1,893,919 shares | 0.04% | -17.75K(-0.90%)Reduced | SEC filing ↗ Feb 11, 2026 | ▾ |
| 04 | STATE STREET CORP CIK 93751 · View history | $150.38M 1,209,634 shares | 0.01% | -127.63K(-9.50%)Reduced | SEC filing ↗ Feb 13, 2026 | ▾ |
| 05 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $123.17M 990,694 shares | 0.03% | -12.26K(-1.20%)Reduced | SEC filing ↗ Feb 12, 2026 | ▾ |
| 06 | BARROW HANLEY MEWHINNEY & STRAUSS LLC CIK 313028 · View history | $70.04M 563,369 shares | 0.23% | -40.98K(-6.80%)Reduced | SEC filing ↗ Feb 11, 2026 | ▾ |
| 07 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $64.82M 521,376 shares | 0.03% | +156.16K(+42.80%)Added | SEC filing ↗ Feb 13, 2026 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $60.87M 489,539 shares | 0.00% | -302(-0.10%)Reduced | SEC filing ↗ Feb 9, 2026 | ▾ |
| 09 | ACK Asset Management LLC CIK 1510940 · View history | $59.03M 474,800 shares | 7.41% | -50.00K(-9.50%)Reduced | SEC filing ↗ Feb 13, 2026 | ▾ |
| 10 | Trigran Investments, Inc. CIK 1336800 · View history | $56.95M 458,073 shares | 11.22% | -39.66K(-8.00%)Reduced | SEC filing ↗ Feb 13, 2026 | ▾ |
| 11 | MORGAN STANLEY CIK 895421 · Amended · View history | $53.39M 429,482 shares | 0.00% | +46.61K(+12.20%)Added | SEC filing ↗ May 27, 2026 | ▾ |
| 12 | SEGALL BRYANT & HAMILL, LLC CIK 1006378 · View history | $44.82M 360,495 shares | 0.61% | +10.99K(+3.10%)Added | SEC filing ↗ Feb 13, 2026 | ▾ |
| 13 | Harvey Partners, LLC CIK 1406484 · View history | $39.72M 319,500 shares | 3.57% | +1.50K(+0.50%)Added | SEC filing ↗ Feb 17, 2026 | ▾ |
| 14 | Copeland Capital Management, LLC CIK 1541743 · View history | $37.91M 304,939 shares | 0.85% | -67.91K(-18.20%)Reduced | SEC filing ↗ Jan 29, 2026 | ▾ |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $37.75M 303,665 shares | 0.01% | -285(-0.10%)Reduced | SEC filing ↗ Feb 13, 2026 | ▾ |
| 16 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. CIK 1705339 · View history | $36.54M 293,875 shares | 0.05% | +6.96K(+2.40%)Added | SEC filing ↗ Feb 17, 2026 | ▾ |
| 17 | RAYMOND JAMES FINANCIAL INC CIK 720005 · View history | $36.33M 288,041 shares | 0.01% | +120.84K(+72.30%)Added | SEC filing ↗ Feb 18, 2026 | ▾ |
| 18 | ROYAL BANK OF CANADA CIK 1000275 · View history | $32.01M 257,488 shares | 0.01% | -50.19K(-16.30%)Reduced | SEC filing ↗ Feb 17, 2026 | ▾ |
| 19 | NORTHERN TRUST CORP CIK 73124 · View history | $31.00M 249,380 shares | 0.00% | -22.07K(-8.10%)Reduced | SEC filing ↗ Feb 17, 2026 | ▾ |
| 20 | Aberdeen Group plc CIK 1716774 · View history | $24.41M 196,346 shares | 0.04% | -32.01K(-14.00%)Reduced | SEC filing ↗ Jan 16, 2026 | ▾ |
Showing 20 / 297 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 297 reporting institutions.
This page includes 20 of 297 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 297 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"576690101","quarter":"2025Q4","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.