Position in MTRN
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$39,850
+$39,105 QoQ
Shares Held
134
+2133.3% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#331
of 400 holders
Holding Since
Sep 2025
3 quarters on record
Voting authority
Sole 0%
Shared 100%
None 0%
Common Shares in MTRN Over Time
Shares Held
Position Value (USD)
Position in Other Industrial Metals & Mining
Basic Materials · as of Jun 30, 2026Optiver Holding B.V. holds $15,612,507 across 8 Other Industrial Metals & Mining names. MTRN ranks #4 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RIO |
Rio Tinto PLC
|
105,835 | $10,046,916 | |
| 2 | VALE |
Vale S.A.
|
326,354 | $4,908,364 | |
| 3 | USAR |
USA Rare Earth, Inc.
|
27,599 | $595,586 | |
| 4 | MTRN |
MATERION Corp
This page
|
134 | $39,850 | |
| 5 | CMP |
Compass Minerals International Inc
|
682 | $21,230 | |
| 6 | LAR |
Lithium Argentina AG
|
55 | $454 | |
| 7 | CRML |
Critical Metals Corp.
|
9 | $92 | |
| 8 | LZM |
Lifezone Metals Ltd
|
4 | $15 |
All Filings in MTRN
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $39,850 | 134 | Shares | Defined | 2026-08-12 | |
| 2025-12-31 | $745 | 6 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $13,530 | 112 | Shares | Defined | 2025-11-10 | |
| No filing history on record for this holder in this stock. | ||||||