Position in MEC
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$57,276
+$42,626 QoQ
Shares Held
1,529
+50.5% QoQ
Ownership
0.006%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#128
of 153 holders
Holding Since
Dec 2022
5 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MEC Over Time
Shares Held
Position Value (USD)
Position in Metal Fabrication
Industrials · as of Jun 30, 2026SIMPLEX TRADING, LLC holds $2,208,114 across 8 Metal Fabrication names. MEC ranks #5 (2.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ATI |
Ati Inc
|
6,203 | $1,222,611 | |
| 2 | IIIN |
Insteel Industries Inc
|
19,057 | $575,521 | |
| 3 | GPGI |
GPGI, Inc.
|
10,763 | $170,593 | |
| 4 | WOR |
Worthington Enterprises, Inc.
|
2,608 | $140,206 | |
| 5 | MEC |
Mayville Engineering Company, Inc.
This page
|
1,529 | $57,276 | |
| 6 | CMC |
COMMERCIAL METALS Co
|
388 | $24,347 | |
| 7 | PRLB |
Proto Labs Inc
|
176 | $14,345 | |
| 8 | TG |
Tredegar Corp
|
404 | $3,215 |
All Filings in MEC
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $57,276 | 1,529 | Shares | Sole | 2026-08-12 | |
| 2023-12-31 | $14,650 | 1,016 | Shares | Sole | 2024-02-02 | |
| 2023-09-30 | $18,583 | 1,694 | Shares | Sole | 2023-11-01 | |
| 2023-03-31 | $45,431 | 3,045 | Shares | Sole | 2023-04-27 | |
| 2022-12-31 | $66,578 | 5,259 | Shares | Sole | 2023-02-02 | |
| No filing history on record for this holder in this stock. | ||||||