Simplex Trading, LLC
- SEC CIK
- 0001488542
- Latest filing
- Aug 12, 2026
MEC holding history
Mayville Engineering Company, Inc. in every 13F filed by Simplex Trading, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
MEC overviewAll 13F holders of MECFull Q2 2026 holdings
- Shares (Q2 2026)
- 1,529
- Value
- $57.3K
- % of portfolio
- <0.1%
- Quarters held
- 5
- Since Q4 2022
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,529 | $57.3K | <0.1% | +1,529 | New | Holders |
| Q1 2024 | 0 | $0 | 0.0% | −1,016−100.0% | Sold out | Holders |
| Q4 2023 | 1,016 | $14.0K | <0.1% | −678−40.0% | Reduced | Holders |
| Q3 2023 | 1,694 | $18.0K | <0.1% | +1,694 | New | Holders |
| Q2 2023 | 0 | $0 | 0.0% | −3,045−100.0% | Sold out | Holders |
| Q1 2023 | 3,045 | $45.0K | <0.1% | −2,214−42.1% | Reduced | Holders |
| Q4 2022 | 5,259 | $66.0K | <0.1% | +5,259 | New | Holders |