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Of the 10 tracked institutions holding MEC, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +5.1pt. It's a gauge of who owns the name, not just how many.
Among the 10 tracked institutional investors we monitor, MEC (MAYVILLE ENGR CO INC) is held with a combined value of $151.96M across 4,370,658 shares. The largest holder is FMR LLC with a position worth $47.96M. 2 funds opened new positions in the most recent quarter. 4 funds increased their holdings. 4 funds reduced their position.
Total Institutional Value
$151.96M
Total Shares Held
4,370,658
Institutional Holders
10
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $47.96M | 0.00% | +29943.9% |
| 2 | BlackRock, Inc. | $44.33M | 0.00% | +34.2% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | $17.89M | 0.00% | New |
| 4 | VANGUARD GROUP INC | $11.75M | 0.00% | -28.0% |
| 5 | STATE STREET CORP | $10.91M | 0.00% | +1.9% |
| 6 | MILLENNIUM MANAGEMENT LLC | $9.50M | 0.01% | -33.4% |
| 7 | CITADEL ADVISORS LLC | $7.44M | 0.00% | +249.9% |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $1.05M | 0.00% | -55.5% |
| 9 | AQR CAPITAL MANAGEMENT LLC | $682.67K | 0.00% | -10.6% |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | $451.00K | 0.00% | New |
SEC Schedule 13D (activist) and 13G (passive) filings for MEC. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of MEC with a position worth $47.96M, representing 0.00% of their portfolio. In total, 10 institutional investors hold MEC with a combined value of $151.96M.
In the most recent quarter, 2 funds opened a new position in MEC. Additionally, 4 increased their holdings and 4 reduced their positions.
Institutional investors hold $151.96M worth of MEC stock across 10 positions. The largest institutional holder is FMR LLC with $47.96M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For MEC, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their MEC positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$14.45
2026-10-21
YTD
-23.7%
8% of 52-week range
