MEC Mayville Engineering Company, Inc.: institutional ownership and insider trading
158 funds reported holding $825M of Mayville Engineering Company, Inc. in their latest 13F filings; in Q2 2026 funds net bought $259M, with 54 new positions and 20 funds selling out; over the last 12 months insiders bought $0 and sold $3.24M on the open market.
Famous investors holding MEC
- Two Sigma (Two Sigma Investments): $7.45M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $9.98M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $9.50M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $1.05M, 0.0% of the portfolio
Largest institutional holders of MEC
- Portolan Capital Management, LLC — $48.7M
- FMR LLC — $48.0M
- BlackRock, Inc. (BLK) — $44.3M
- Allspring Global Investments Holdings, LLC — $37.8M
- DRIEHAUS CAPITAL MANAGEMENT LLC — $31.7M
- SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC — $30.0M
- DIMENSIONAL FUND ADVISORS LP — $29.3M
- ROYCE & ASSOCIATES LP — $28.2M
- VANGUARD CAPITAL MANAGEMENT LLC — $27.9M
- Boston Partners — $25.8M
Recent MEC insider trades
- Aug 6, 2026: Leuba Sean P sold 12,855 shares ($327K)
- Jun 11, 2026: Reddy Jagadeesh A sold 15,688 shares ($550K)
- Jun 8, 2026: Reddy Jagadeesh A sold 1,300 shares ($45.5K)
- Jun 1, 2026: Reddy Jagadeesh A sold 17,294 shares ($519K)
5%+ owners
- Portolan Capital Management, LLC: 5.9% (Schedule 13G, filed May 28, 2026)
- FMR LLC: 5.0% (Schedule 13G, filed Aug 6, 2026)