Mayville Engineering Co Inc
$13.90-2.2%
+$297.9M
Net Activity
+52.09% total shares
Institutions Holding
159
Popularity Rank
#3555
Avg Weight
0.17%
Total Value
$817.6M
Market Cap
$284.6M
159 institutions currently hold MEC, with 104 net buyers and 61 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
61
Net Buying Institutions
104
Top 5 by Value
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Across its top 20 institutional holders, MEC's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 6/100, avg. turnover score 40/100).
MEC ranks #3555 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
MEC is a top-conviction position for EVR Research LP — at 8.2% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in MEC belongs to Portolan Capital Management, LLC, but the position matters far more to EVR Research LP, who has 8.2% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
MEC is down 2.2% today, but institutions show net buying of $297.9M this quarter — a divergence between today's price move and the underlying institutional flow.
MEC reported a net loss of $17.3M over the trailing twelve months.
+$387.4M
Total Buy Value
$97.0M
Total Sell Value
104
Net Buyers
61
Net Sellers
MEC
Q2 2026
Top 5 Institutional Movers
+$47.9M
+$33.9M
+$31.7M
+$28.5M
MEC does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
2
Filings (90d)
$335K
Total Est. Value
13K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Leuba Sean P | 2026-08-06 | $26K |
| Leuba Sean P | 2026-08-06 | $309K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
0
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Allspring Global Investments Holdings, LLC | 13G/A | 2026-07-08 | 4.2% |
1
Filings (14d)
Mayville Engineering Company (MEC) issued a press release on August 4, 2026, reporting its financial results for the three months ended June 30, 2026. The release was furnished with this 8-K filing as Exhibit 99.1. The excerpt doesn't include specific revenue or profit figures, so it only confirms that the earnings announcement took place.
View Full Filing (SEC EDGAR)578605107
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,146
Total reported value
$257.5B
Held by 4146 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,137
Total reported value
$279.7B
Held by 4137 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,136
Total reported value
$649.5B
Held by 4136 institutions — one of the most-tracked stocks on AlphaSMO
Access MEC's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MECCLI
npx alphasmo stocks get MEC