O'SHAUGHNESSY ASSET MANAGEMENT, LLC
Position in MEC — Mayville Engineering Company, Inc.
CIK 1423442
Stamford, CT
Position in MEC
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$816,066
+$342,725 QoQ
Shares Held
21,785
-17.4% QoQ
Ownership
0.085%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#87
of 154 holders
Holding Since
Dec 2020
19 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, 2026O'SHAUGHNESSY ASSET MANAGEMENT, LLC holds $43,294,046 across 10 Metal Fabrication names. MEC ranks #6 (1.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MLI |
Mueller Industries Inc
|
413,262 | $25,401,148 | |
| 2 | ATI |
Ati Inc
|
38,521 | $7,592,489 | |
| 3 | CRS |
Carpenter Technology Corp
|
7,797 | $4,809,501 | |
| 4 | CMC |
COMMERCIAL METALS Co
|
26,829 | $1,683,519 | |
| 5 | AP |
Ampco Pittsburgh Corp
|
174,312 | $1,507,798 | |
| 6 | MEC |
Mayville Engineering Company, Inc.
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|
21,785 | $816,066 | |
| 7 | TG |
Tredegar Corp
|
63,089 | $502,188 | |
| 8 | GPGI |
GPGI, Inc.
|
24,655 | $390,781 |
All Filings in MEC
Export CSV
19 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $816,066 | 21,785 | Shares | Sole | 2026-08-13 | |
| 2026-03-31 | $473,341 | 26,370 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $508,135 | 27,144 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $410,708 | 29,848 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $488,280 | 30,594 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $410,649 | 30,577 | Shares | Sole | 2025-05-13 | |
| 2024-12-31 | $650,226 | 41,363 | Shares | Sole | 2025-02-12 | |
| 2024-09-30 | $852,053 | 40,420 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $417,566 | 25,064 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $245,874 | 17,158 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $445,361 | 30,885 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $392,177 | 35,750 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $583,427 | 46,824 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $461,803 | 30,952 | Shares | Sole | 2023-05-12 | |
| 2021-12-31 | $158,359 | 10,621 | Shares | Defined | 2022-02-11 | |
| 2021-09-30 | $396,134 | 21,071 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $395,382 | 19,661 | Shares | Sole | 2021-08-09 | |
| 2021-03-31 | $242,547 | 16,867 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $144,613 | 10,776 | Shares | Sole | 2021-02-11 | |
| No filing history on record for this holder in this stock. | ||||||