Boston Partners
- SEC CIK
- 0001386060
- Latest filing
- Aug 4, 2026
MEC holding history
Mayville Engineering Company, Inc. in every 13F filed by Boston Partners, 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)
- 696,429
- Value
- $25.8M
- % of portfolio
- <0.1%
- Quarters held
- 4
- Since Q3 2025
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 696,429 | $25.8M | <0.1% | +463,792+199.4% | Added | Holders |
| Q1 2026 | 232,637 | $4.18M | <0.1% | +9,907+4.4% | Added | Holders |
| Q4 2025 | 222,730 | $4.17M | <0.1% | +24,570+12.4% | Added | Holders |
| Q3 2025 | 198,160 | $2.73M | <0.1% | +198,160 | New | Holders |