MAYVILLE ENGINEERING CO INC (MEC) Institutional Ownership and Insiders Activity
MAYVILLE ENGINEERING CO INC (MEC) is widely held by institutional investors, with 151 firms reporting positions valued at approximately $762.71M based on SEC Form 13F filings for the quarter ended June 30, 2026.
Portolan Capital Management, Llc is the largest disclosed holder, reporting approximately $48.67M in MEC holdings in its latest filing.
Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
151
Total Reported Value
$762.71M
Largest Holder
Portolan Capital Management, Llc
Largest Position
$48.67M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
53
Funds Exiting Positions
25
Top Institutional Owners
View allInvestorReported Balance
- Portolan Capital Management, Llc$48.67M
- Fmr Llc$47.96M
- Blackrock, Inc.$44.33M
- Allspring Global Investments Holdings, Llc$37.78M
- Driehaus Capital Management Llc$31.70M
Related MEC Institutional Insights:
- MEC 13F Institutional Holders
- MEC Top Institutional Shareholders
- MEC Institutional Ownership Changes
- Industrials Sector Institutional Ownership
- Industrials Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Industrials Stocks By Institutional Investors
- Most Sold Industrials Stocks By Institutional Investors
- MEC Insider Trading & SEC Form 4 Activity
- MEC Articles
- Top Institutional Investor Stock Rankings