Position in MTRN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$68,679,820
+$9,652,684 QoQ
Shares Held
474,800
0.0% QoQ
Ownership
2.28%
of shares outstanding
% of Portfolio
8.87%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MTRN Over Time
Shares Held
Position Value (USD)
Position in Other Industrial Metals & Mining
Basic Materials · as of Mar 31, 2026ACK Asset Management LLC holds $68,679,820 across 1 Other Industrial Metals & Mining name. MTRN ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MTRN |
MATERION Corp
This page
|
474,800 | $68,679,820 |
All Filings in MTRN
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25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $68,679,820 | 474,800 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $59,027,136 | 474,800 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $63,401,088 | 524,800 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $41,653,376 | 524,800 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $37,470,720 | 459,200 | Shares | Sole | 2025-05-13 | |
| 2024-12-31 | $48,925,824 | 494,800 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $56,545,230 | 505,500 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $54,659,715 | 505,500 | Shares | Sole | 2024-08-13 | |
| 2024-03-31 | $63,305,875 | 480,500 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $62,527,465 | 480,500 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $48,967,755 | 480,500 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $54,873,100 | 480,500 | Shares | Sole | 2023-08-15 | |
| 2023-03-31 | $55,738,000 | 480,500 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $45,111,405 | 515,500 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $33,576,000 | 419,700 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $30,944,481 | 419,700 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $35,985,078 | 419,700 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $38,155,100 | 415,000 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $23,632,752 | 344,300 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $23,358,500 | 310,000 | Shares | Sole | 2021-07-13 | |
| 2021-03-31 | $17,884,800 | 270,000 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $10,918,422 | 171,350 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $9,477,264 | 182,150 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $12,224,212 | 198,800 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $1,225,350 | 35,000 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||