Position in MTRN
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$16,944,092
+$7,657,129 QoQ
Shares Held
56,976
-11.3% QoQ
Ownership
0.273%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#59
of 400 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 58%
Shared 0%
None 42%
Common Shares in MTRN Over Time
Shares Held
Position Value (USD)
Position in Other Industrial Metals & Mining
Basic Materials · as of Jun 30, 2026RHUMBLINE ADVISERS holds $57,822,990 across 27 Other Industrial Metals & Mining names. MTRN ranks #2 (29.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MP |
MP Materials Corp. / DE
|
347,751 | $19,477,533 | |
| 2 | MTRN |
MATERION Corp
This page
|
56,976 | $16,944,092 | |
| 3 | USAR |
USA Rare Earth, Inc.
|
243,567 | $5,256,175 | |
| 4 | ALM |
Almonty Industries Inc.
|
196,406 | $3,252,483 | |
| 5 | BHP |
BHP Group Ltd
|
32,863 | $2,737,816 | |
| 6 | RIO |
Rio Tinto PLC
|
22,301 | $2,117,033 | |
| 7 | VALE |
Vale S.A.
|
133,196 | $2,003,267 | |
| 8 | CMP |
Compass Minerals International Inc
|
41,985 | $1,306,993 |
All Filings in MTRN
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $16,944,092 | 56,976 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $9,286,963 | 64,203 | Shares | Sole | 2026-05-12 | |
| 2025-12-31 | $7,868,212 | 63,290 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $8,264,491 | 68,409 | Shares | Sole | 2025-11-06 | |
| 2025-06-30 | $5,416,050 | 68,238 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $5,343,168 | 65,480 | Shares | Sole | 2025-05-29 | |
| 2024-12-31 | $6,486,429 | 65,599 | Shares | Sole | 2025-05-29 | |
| 2024-09-30 | $7,029,058 | 62,838 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $7,063,484 | 65,324 | Shares | Sole | 2024-08-01 | |
| 2024-03-31 | $8,548,203 | 64,882 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $8,451,162 | 64,944 | Shares | Sole | 2024-02-08 | |
| 2023-09-30 | $6,835,205 | 67,071 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $7,619,880 | 66,724 | Shares | Sole | 2023-08-08 | |
| 2023-03-31 | $7,827,796 | 67,481 | Shares | Sole | 2023-05-11 | |
| 2022-12-31 | $5,641,069 | 64,462 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $5,089,600 | 63,620 | Shares | Sole | 2022-11-10 | |
| 2022-06-30 | $4,495,318 | 60,970 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $5,280,640 | 61,589 | Shares | Sole | 2022-05-12 | |
| 2021-12-31 | $5,520,445 | 60,044 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $4,177,224 | 60,857 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $5,181,819 | 68,770 | Shares | Sole | 2021-08-05 | |
| 2021-03-31 | $4,790,741 | 72,324 | Shares | Sole | 2021-05-06 | |
| 2020-12-31 | $4,560,058 | 71,564 | Shares | Sole | 2021-02-10 | |
| 2020-09-30 | $3,490,328 | 67,083 | Shares | Sole | 2020-11-12 | |
| 2020-06-30 | $4,466,818 | 72,643 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $2,745,099 | 78,409 | Shares | Sole | 2020-05-06 | |
| No filing history on record for this holder in this stock. | ||||||