MaterionMTRN
13F holders, Q1 2025 (March 31)252holders +7
37new positions
30sold out
10famous investors
$81.62avg. 13F price*
At the end of Q1 2025, 252 institutions reported holding Materion Corp. (MTRN) in their 13F filings, up 7 from Q4 2024. 37 opened new positions and 30 sold out. The largest holders were BlackRock, Inc. ($278.0M), Vanguard Group Inc. ($202.2M) and Capital Research Global Investors ($152.0M). 10 famous investors held it, including Mario Gabelli (0.2% of GAMCO Investors's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Materion Corp.
- CUSIP
- 576690101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 37 | $14.1M |
| Exits | 30 | $20.8M |
All 13F filers, Q4 2024 → Q1 2025: 974,822 shares bought and 916,987 shares sold, net +57,835 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 252 holders
| BlackRock, Inc. | 0.01% | Reduce -2.4% | 3,406,963 | $278.0M |
| Vanguard Group Inc. | 0.00% | Reduce -1.8% | 2,477,371 | $202.2M |
| Capital Research Global Investors | 0.03% | Add +1.3% | 1,862,644 | $152.0M |
| Dimensional Fund Advisors LP | 0.02% | Reduce -4.8% | 1,073,452 | $87.6M |
| State Street Corp. | 0.00% | Add +5.0% | 1,014,958 | $82.8M |
| Trigran Investments, Inc. | 9.54% | Add +7.7% | 794,765 | $64.9M |
| Vaughan Nelson Investment Management, L.P. | 0.55% | Add +7.5% | 673,007 | $54.9M |
| Barrow Hanley Mewhinney & Strauss LLC | 0.15% | Add +9.1% | 516,558 | $42.2M |
| Geode Capital Management, LLC | 0.00% | Add +2.8% | 476,718 | $38.9M |
| ACK Asset Management LLC | 6.15% | Reduce -7.2% | 459,200 | $37.5M |
| Copeland Capital Management, LLC | 0.66% | Reduce -2.8% | 401,457 | $32.8M |
| Royal Bank of Canada | 0.01% | Reduce -5.5% | 295,018 | $24.1M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.05% | Add +41.3% | 289,106 | $23.6M |
| Northern Trust Corp. | 0.00% | Add +2.3% | 288,611 | $23.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.7% | 268,644 | $21.9M |
| Aberdeen Group plc | 0.04% | Add +17.0% | 248,565 | $20.3M |
| Segall Bryant & Hamill, LLC | 0.30% | Reduce -0.3% | 240,648 | $19.6M |
| Silvercrest Asset Management Group LLC | 0.13% | Reduce -33.8% | 230,291 | $18.8M |
| Morgan Stanley | 0.00% | Reduce -0.6% | 213,457 | $17.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -33.6% | 203,542 | $16.6M |
| GAMCO Investors | 0.17% | Reduce -1.6% | 187,750 | $15.3M |
| Schroder Investment Management Group | 0.01% | Reduce -0.1% | 163,114 | $13.6M |
| Ceredex Value Advisors LLC | 0.29% | Add +0.9% | 160,750 | $13.1M |
| Fisher Asset Management | 0.01% | Reduce -3.5% | 158,601 | $12.9M |
| Granahan Investment Management, LLC | 0.51% | Reduce -1.5% | 124,489 | $10.2M |
| Intech Investment Management LLC | 0.10% | Add +67.6% | 122,009 | $10.0M |
| Nuveen, LLC | 0.00% | — | 118,958 | $9.7M |
| Natixis Advisors, LLC | 0.02% | Reduce -5.8% | 110,024 | $9.0M |
| Principal Financial Group Inc. | 0.00% | Add +2.3% | 103,572 | $8.5M |
| Kennedy Capital Management LLC | 0.19% | Add +38.7% | 96,915 | $7.9M |
| Heartland Advisors Inc. | 0.43% | No change | 91,071 | $7.4M |
| Millennium Management | 0.01% | Add +54.1% | 89,212 | $7.3M |
| ProShare Advisors LLC | 0.02% | Add +12.1% | 84,604 | $6.9M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -39.0% | 81,534 | $6.7M |
| American Century Companies Inc. | 0.00% | Add +101.5% | 73,985 | $6.0M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -1.6% | 73,318 | $6.0M |
| Phocas Financial Corp. | 0.89% | Reduce -5.5% | 71,526 | $5.8M |
| D. E. Shaw & Co. | 0.01% | Add +155.1% | 70,802 | $5.8M |
| Raymond James Financial Inc. | 0.00% | Reduce -35.5% | 67,807 | $5.5M |
| Public Sector Pension Investment Board | 0.02% | Add +27.2% | 65,792 | $5.4M |
| Rhumbline Advisers | 0.01% | Reduce -0.2% | 65,480 | $5.3M |
| Ameriprise Financial Inc. | 0.00% | Reduce -4.2% | 64,375 | $5.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -38.8% | 63,526 | $5.2M |
| Invesco Ltd. | 0.00% | Reduce -7.3% | 63,504 | $5.2M |
| Bank of America Corp. | 0.00% | Add +83.6% | 63,093 | $5.1M |
| Legal & General Group Plc | 0.00% | Reduce -1.8% | 57,346 | $4.7M |
| HighTower Advisors, LLC | 0.01% | Add +8.3% | 55,252 | $4.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +12.2% | 54,045 | $4.4M |
| Mutual of America Capital Management LLC | 0.05% | Reduce -0.1% | 52,580 | $4.3M |
| Sei Investments Co. | 0.01% | Add +16.3% | 51,597 | $4.2M |
| Wells Fargo & Company | 0.00% | Reduce -0.1% | 45,966 | $3.8M |
| UBS Group AG | 0.00% | Add +12.6% | 44,461 | $3.6M |
| Swiss National Bank | 0.00% | Reduce -1.5% | 40,200 | $3.3M |
| Fiera Capital Corp | 0.01% | Add +1.4% | 37,923 | $3.1M |
| Trexquant Investment LP | 0.03% | Add +1081.1% | 35,645 | $2.9M |
| Jane Street Group, LLC | 0.01% | Add +44.9% | 35,319 | $2.9M |
| King Luther Capital Management Corp. | 0.01% | No change | 34,901 | $2.8M |
| Voloridge Investment Management, LLC | 0.01% | Add +260.1% | 34,277 | $2.8M |
| Gilman Hill Asset Management, LLC | 0.48% | Add +0.1% | 33,707 | $2.8M |
| Renaissance Technologies | 0.00% | Add +281.2% | 32,300 | $2.6M |
| Citigroup Inc. | 0.00% | Add +8.0% | 31,066 | $2.5M |
| Stifel Financial Corp. | 0.00% | Reduce -14.5% | 30,682 | $2.5M |
| Chatham Capital Group, Inc. | 0.41% | Add +2.5% | 29,746 | $2.4M |
| F/m Investments LLC | 0.10% | Reduce -11.0% | 29,687 | $2.4M |
| Barclays PLC | 0.00% | Reduce -27.1% | 27,444 | $2.2M |
| Susquehanna International Group, LLP | 0.00% | Add +154.6% | 25,539 | $2.1M |
| Rice Hall James & Associates, LLC | 0.12% | Reduce -0.3% | 24,653 | $2.0M |
| New York State Teachers Retirement System | 0.00% | Reduce -12.9% | 24,394 | $2.0M |
| Nisa Investment Advisors, LLC | 0.01% | Add +0.9% | 23,312 | $1.9M |
| Alliancebernstein L.P. | 0.00% | Add +4.4% | 22,769 | $1.9M |
| Norges Bank | 0.00% | Reduce -56.3% | 22,287 | $1.8M |
| Prudential Financial Inc. | 0.00% | Add +4.0% | 21,612 | $1.8M |
| Qube Research & Technologies Ltd | 0.00% | New | 19,832 | $1.6M |
| Pathstone Holdings, LLC | 0.01% | Add +14.2% | 19,205 | $1.6M |
| California State Teachers Retirement System | 0.00% | Reduce -2.5% | 18,911 | $1.5M |
| Cubist Systematic Strategies, LLC | 0.02% | New | 18,367 | $1.5M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -12.3% | 17,471 | $1.4M |
| New York State Common Retirement Fund | 0.00% | No change | 17,261 | $1.4M |
| Deutsche Bank AG | 0.00% | Reduce -9.3% | 16,555 | $1.4M |
| T. Rowe Price Associates Inc. | 0.00% | Add +6.2% | 15,787 | $1.3M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -5.0% | 15,242 | $1.2M |
| First Trust Advisors LP | 0.00% | Add +10.9% | 15,216 | $1.2M |
| Engineers Gate Manager LP | 0.02% | Add +3.3% | 15,163 | $1.2M |
| Schonfeld Strategic Advisors LLC | 0.01% | New | 15,040 | $1.2M |
| State of Wyoming | 0.15% | Add +16.6% | 14,061 | $1.1M |
| Semanteon Capital Management, LP | 0.58% | New | 13,145 | $1.1M |
| Susquehanna Fundamental Investments, LLC | 0.02% | Add +313.2% | 13,122 | $1.1M |
| Kingswood Wealth Advisors, LLC | 0.10% | Reduce -4.1% | 12,818 | $1.0M |
| Citadel Advisors | 0.00% | Add +66.4% | 12,584 | $1.0M |
| MetLife Investment Management, LLC | 0.01% | Reduce -1.6% | 12,384 | $1.0M |
| Voya Investment Management LLC | 0.00% | Add +18.6% | 12,054 | $984K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -2.3% | 11,498 | $938K |
| Illinois Municipal Retirement Fund | 0.01% | Add +0.2% | 11,307 | $923K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +2.9% | 10,993 | $897K |
| Ensign Peak Advisors, Inc | 0.00% | No change | 10,948 | $893K |
| Pinnacle Associates Ltd. | 0.01% | Add +15.4% | 10,820 | $883K |
| Dakota Wealth Management | 0.02% | Reduce -1.1% | 10,790 | $880K |
| NorthCrest Asset Manangement, LLC | 0.03% | Add +0.2% | 10,767 | $879K |
| Corebridge Financial, Inc. | 0.01% | Reduce -1.9% | 10,757 | $878K |
| Synovus Financial Corp. | 0.01% | Add +35.9% | 10,391 | $848K |
| Creative Planning | 0.00% | Add +10403.1% | 10,188 | $831K |
| Comerica Bank | 0.00% | Reduce -2.4% | 9,844 | $803K |
| Louisiana State Employees Retirement System | 0.02% | Reduce -2.0% | 9,800 | $800K |
| Janus Henderson Group PLC | 0.00% | No change | 8,930 | $744K |
| Janney Montgomery Scott LLC | 0.00% | Reduce -0.9% | 8,801 | $718K |
| SG Americas Securities, LLC | 0.00% | New | 8,750 | $714K |
| ExodusPoint Capital Management, LP | 0.01% | New | 8,414 | $687K |
| Numerai GP LLC | 0.13% | New | 8,359 | $682K |
| Wesbanco Bank Inc. | 0.02% | Add +105.0% | 8,200 | $669K |
| Campbell & CO Investment Adviser LLC | 0.05% | New | 8,133 | $664K |
| Victory Capital Management Inc. | 0.00% | Add +3.2% | 8,124 | $663K |
| Meyer Handelman Co. | 0.02% | No change | 7,900 | $645K |
| Yousif Capital Management, LLC | 0.01% | Reduce -2.1% | 7,704 | $629K |
| BNP Paribas Financial Markets | 0.00% | Add +112.4% | 7,471 | $610K |
| Russell Investments Group, Ltd. | 0.00% | Add +10.8% | 7,257 | $592K |
| State of Tennessee, Department of Treasury | 0.00% | Add +8.8% | 6,960 | $568K |
| Teachers Retirement System of the State of Kentucky | 0.00% | No change | 6,490 | $529K |
| Maryland State Retirement & Pension System | 0.01% | Reduce -13.2% | 6,081 | $496K |
| State of Wisconsin Investment Board | 0.00% | Add +15.8% | 6,059 | $494K |
| Walleye Capital LLC | 0.01% | New | 6,017 | $491K |
| Aurora Investment Counsel | 0.27% | Reduce -7.6% | 6,010 | $490K |
| Arizona State Retirement System | 0.00% | Reduce -1.1% | 5,953 | $486K |
| Amalgamated Bank | 0.00% | Reduce -2.8% | 5,931 | $484K |
| Verition Fund Management LLC | 0.00% | New | 5,760 | $470K |
| Heritage Investors Management Corp. | 0.02% | No change | 5,727 | $467K |
| Bank of Montreal | 0.00% | Add +7.8% | 5,717 | $467K |
| OP Asset Management Ltd | 0.01% | — | 5,266 | $430K |
| Gotham Asset Management | 0.00% | New | 5,216 | $426K |
| Petrus Trust Company, LTA | 0.04% | New | 5,184 | $423K |
| Neuberger Berman Group LLC | 0.00% | Add +17.5% | 5,078 | $414K |
| Handelsbanken Fonder AB | 0.00% | No change | 5,066 | $413K |
| XTX Topco Ltd | 0.02% | New | 5,048 | $412K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | Add +12.1% | 4,966 | $405K |
| Oregon Public Employees Retirement Fund | 0.01% | Reduce -2.0% | 4,797 | $391K |
| Cibc World Markets Corp. | 0.00% | New | 4,569 | $373K |
| Snowden Capital Advisors LLC | 0.01% | Reduce -2.4% | 4,501 | $367K |
| Gabelli Funds LLC | 0.00% | New | 4,500 | $367K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 4,413 | $360K |
| LGT Group Foundation | 0.00% | No change | 4,400 | $359K |
| PNC Financial Services Group, Inc. | 0.00% | Add +18.2% | 4,377 | $357K |
| Graham Capital Management, L.P. | 0.02% | Add +43.9% | 4,362 | $356K |
| Dynamic Technology Lab Private Ltd | 0.05% | Reduce -0.5% | 4,280 | $349K |
| Inspire Investing, LLC | 0.04% | Add +4.0% | 4,209 | $343K |
| KLP Kapitalforvaltning As | 0.00% | No change | 4,200 | $343K |
| FMR LLC | 0.00% | Reduce -35.3% | 4,016 | $328K |
| Quantbot Technologies LP | 0.01% | New | 3,846 | $314K |
| Tidal Investments LLC | 0.00% | New | 3,813 | $311K |
| Avantax Advisory Services, Inc. | 0.00% | Add +7.8% | 3,735 | $305K |
| LPL Financial LLC | 0.00% | Reduce -2.2% | 3,659 | $299K |
| Bessemer Group Inc. | 0.00% | Add +0.6% | 3,599 | $293K |
| Johnson Financial Group, Inc. | 0.01% | New | 3,579 | $292K |
| Central Pacific Bank - Trust Division | 0.04% | Add +9.6% | 3,515 | $287K |
| Pictet Asset Management Holding SA | 0.00% | Add +11.6% | 3,406 | $278K |
| Cerity Partners LLC | 0.00% | Reduce -57.9% | 3,395 | $277K |
| Advisors Asset Management, Inc. | 0.01% | Add +0.5% | 3,357 | $274K |
| Algert Global LLC | 0.01% | New | 3,340 | $273K |
| PEAK6 LLC | 0.01% | New | 3,327 | $271K |
| Squarepoint Ops LLC | 0.00% | Reduce -54.1% | 3,265 | $266K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Reduce -24.3% | 3,207 | $262K |
| HSBC Holdings PLC | 0.00% | Add +3.5% | 3,152 | $257K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.07% | New | 3,119 | $254K |
| Teacher Retirement System of Texas | 0.00% | New | 3,034 | $248K |
| Orion Porfolio Solutions, LLC | 0.00% | Add +1.1% | 2,990 | $244K |
| Orion Portfolio Solutions, LLC | 0.00% | Add +1.1% | 2,990 | $244K |
| New Age Alpha Advisors, LLC | 0.01% | New | 2,990 | $244K |
| Wealthspire Advisors, LLC | 0.00% | Reduce -13.5% | 2,963 | $242K |
| Whittier Trust Co. | 0.00% | Add +0.1% | 2,822 | $230K |
| EntryPoint Capital, LLC | 0.10% | Add +19.4% | 2,691 | $220K |
| Ethic Inc. | 0.00% | Reduce -26.8% | 2,653 | $215K |
| MQS Management LLC | 0.12% | New | 2,593 | $212K |
| AQR Capital Management | 0.00% | New | 2,469 | $201K |
| Ameritas Investment Partners, Inc. | 0.01% | No change | 2,154 | $176K |
| GAMMA Investing LLC | 0.01% | Add +722.2% | 2,146 | $175K |
| Aquatic Capital Management LLC | 0.00% | New | 2,091 | $171K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 2,032 | $166K |
| Cullen/Frost Bankers, Inc. | 0.00% | No change | 1,875 | $153K |
| Quadrant Capital Group LLC | 0.01% | Add +539.3% | 1,739 | $142K |
| AdvisorNet Financial, Inc | 0.01% | No change | 1,302 | $106K |
| US Bancorp \de | 0.00% | Reduce -7.2% | 1,250 | $102K |
| Aster Capital Management (DIFC) Ltd | 0.02% | New | 936 | $86K |
| KBC Group NV | 0.00% | Add +1.9% | 899 | $73K |
| Brown, Lisle/Cummings, Inc. | 0.02% | No change | 854 | $70K |
| ARK Investment Management | 0.00% | Reduce -4.5% | 807 | $66K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -57.2% | 521 | $43K |
| First Horizon Advisors, Inc. | 0.00% | No change | 467 | $38K |
| Arax Advisory Partners | 0.00% | Add +12.3% | 446 | $36K |
| Blue Trust, Inc. | 0.00% | No change | 425 | $35K |
| Smartleaf Asset Management LLC | 0.00% | Reduce -7.1% | 405 | $34K |
| Anchor Investment Management, LLC | 0.00% | No change | 400 | $33K |
| Point72 Hong Kong Ltd | 0.00% | New | 393 | $32K |
| Versant Capital Management, Inc | 0.00% | Add +34.2% | 326 | $27K |
| Public Employees Retirement System of Ohio | 0.00% | Add +20.9% | 313 | $26K |
| NewEdge Advisors, LLC | 0.00% | No change | 298 | $24K |
| Point72 Asset Management | 0.00% | New | 295 | $24K |
| Cwm, LLC | 0.00% | Add +60.1% | 253 | $21K |
| Compass Wealth Management LLC | 0.01% | No change | 250 | $20K |
| Coldstream Capital Management Inc. | 0.00% | New | 248 | $20K |
| CBIZ Investment Advisory Services, LLC | 0.00% | Reduce -1.2% | 246 | $20K |
| Osaic Holdings, Inc. | 0.00% | Reduce -40.2% | 211 | $17K |
| Jones Financial Companies LLLP | 0.00% | New | 177 | $15K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 169 | $14K |
| Binnacle Investments Inc | 0.01% | — | 167 | $14K |
| Retirement Wealth Solutions LLC | 0.01% | Add +0.7% | 139 | $11K |
| Key Financial Inc | 0.00% | No change | 138 | $11K |
| Principal Securities, Inc. | 0.00% | No change | 105 | $10K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +36.7% | 123 | $10K |
| Sunbelt Securities, Inc. | 0.00% | No change | 100 | $8K |
| Fifth Third Bancorp | 0.00% | Add +2.3% | 89 | $7K |
| Signaturefd, LLC | 0.00% | Add +70.6% | 87 | $7K |
| UMB Bank, n.a. | 0.00% | Add +56.5% | 72 | $6K |
| Kayne Anderson Rudnick Investment Management LLC | 0.00% | No change | 72 | $6K |
| Cornerstone Planning Group LLC | 0.00% | Add +252.6% | 67 | $5K |
| Geneos Wealth Management Inc. | 0.00% | Add +56.1% | 64 | $5K |
| Farther Finance Advisors, LLC | 0.00% | No change | 60 | $5K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | No change | 59 | $5K |
| WPG Advisers, LLC | 0.00% | Add +477.8% | 52 | $4K |
| Harbor Capital Advisors, Inc. | 0.00% | No change | 47 | $4K |
| Whipplewood Advisors, LLC | 0.00% | Reduce -75.0% | 12 | $4K |
| Brooklyn Investment Group | 0.00% | Add +82.6% | 42 | $3K |
| Sterling Capital Management LLC | 0.00% | Reduce -32.8% | 41 | $3K |
| LRI Investments, LLC | 0.00% | No change | 33 | $3K |
| Parallel Advisors, LLC | 0.00% | Reduce -37.7% | 33 | $3K |
| Lindbrook Capital, LLC | 0.00% | Reduce -33.3% | 32 | $3K |
| Bokf, NA | 0.00% | No change | 28 | $2K |
| Sierra Ocean, LLC | 0.00% | New | 25 | $2K |
| Huntington National Bank | 0.00% | Reduce -31.4% | 24 | $2K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 27 | $2K |
| Quarry LP | 0.00% | New | 21 | $2K |
| Allworth Financial LP | 0.00% | Reduce -57.5% | 17 | $1K |
| Strategic Investment Solutions, Inc. | 0.00% | No change | 16 | $1K |
| Mather Group, Llc. | 0.00% | Reduce -84.6% | 16 | $1K |
| Parkside Financial Bank & Trust | 0.00% | Add +200.0% | 15 | $1K |
| Bogart Wealth, LLC | 0.00% | Reduce -31.8% | 15 | $1K |
| Harbour Investments, Inc. | 0.00% | No change | 15 | $1K |
| Farmers & Merchants Investments Inc. | 0.00% | No change | 15 | $1K |
| Montag A & Associates Inc. | 0.00% | No change | 13 | $1K |
| Rothschild Investment LLC | 0.00% | Reduce -66.7% | 10 | $816 |
| Laurel Wealth Advisors LLC | 0.00% | No change | 10 | $816 |
| MPWM Advisory Solutions, LLC | 0.00% | No change | 6 | $490 |
| Bell Investment Advisors, Inc | 0.00% | No change | 6 | $490 |
| Stephens Consulting, LLC | 0.00% | New | 5 | $408 |
| JFS Wealth Advisors, LLC | 0.00% | No change | 4 | $327 |
| True Wealth Design, LLC | 0.00% | New | 3 | $245 |
| Global Financial Private Client, LLC | 0.00% | Add +200.0% | 3 | $245 |
| Larson Financial Group LLC | 0.00% | No change | 3 | $245 |
| Abound Wealth Management | 0.00% | No change | 2 | $164 |
| CoreCap Advisors, LLC | 0.00% | New | 2 | $163 |
| MassMutual Private Wealth & Trust, FSB | 0.00% | No change | 1 | $82 |
| SJS Investment Consulting Inc. | 0.00% | No change | 1 | $82 |
| Hantz Financial Services, Inc. | 0.00% | New | 1 | $0 |
| Hemington Wealth Management | 0.00% | Reduce -42.9% | 4 | $0 |
| Covestor Ltd | 0.00% | No change | 1 | $0 |
"% of holder's portfolio" is MTRN's weight in each manager's 13F, not the share of Materion Corp. the manager owns.