13FBOX
MAYVILLE ENGR CO INC · 13F Institutional Holdings
Options Calculator Rankings
M

MAYVILLE ENGR CO INC

MEC
Institutions
157
Combined AUM (Q2 2026)
$816.0M
Combined Shares (Q2 2026)
21.9M
Overall Trend
Increase
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+10.7M
100 · 57 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-3.2M
61 · 23 Exit · ≈
⚖️ Net
+7.5M
Net Buy
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$816.0M
Institutions
157
New Buys
57
Adds
43
Reduces
38
Exits
23
Unchanged
19
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
Portolan Capital Management, LLC
1.82%0.78%#3$48.7M1.3M$14.7M821,136+478,120+58.23%Add
FMR LLC
<0.01%<0.01%#84$48.0M1.3M$76,4874,261+1.3M+29,943.89%Add
BlackRock, Inc.
<0.01%<0.01%#105$44.3M1.2M$15.8M881,854+301,589+34.20%Add
Allspring Global Investments Holdings, LLC
0.06%0.06%#33$37.8M1.1M$35.8M2.0M-927,434-46.36%Reduce
DRIEHAUS CAPITAL MANAGEMENT LLC
0.18%#21$31.7M846,354$00+846,354New Buy
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC
0.53%#14$30.0M800,000$00+800,000New Buy
DIMENSIONAL FUND ADVISORS LP
0.01%<0.01%#68$29.3M782,276$16.6M926,216-143,940-15.54%Reduce
ROYCE & ASSOCIATES LP
0.23%0.13%#19$28.2M752,083$13.5M751,001+1,082+0.14%Add
VANGUARD CAPITAL MANAGEMENT LLC
<0.01%<0.01%#107$27.9M743,621$10.7M594,938+148,683+24.99%Add
Boston Partners
0.02%<0.01%#48$25.8M696,429$4.2M232,637+463,792+199.36%Add
Jupiter Topco LLC
0.01%#64$21.5M575,278$00+575,278New Buy
BLAIR WILLIAM & CO/IL
0.05%0.03%#35$20.5M546,714$10.1M565,300-18,586-3.29%Reduce
WELLINGTON MANAGEMENT GROUP LLP
<0.01%#77$17.9M477,583$00+477,583New Buy
EVR Research LP
8.17%6.34%#1$16.6M441,908$11.1M620,000-178,092-28.72%Reduce
JANE STREET GROUP, LLC
<0.01%#95$15.1M403,351$00+403,351New Buy
GEODE CAPITAL MANAGEMENT, LLC
<0.01%<0.01%#102$14.0M374,578$6.0M335,835+38,743+11.54%Add
First Eagle Investment Management, LLC
0.02%0.01%#46$13.8M369,575$7.3M404,075-34,500-8.54%Reduce
SUSQUEHANNA INTERNATIONAL GROUP, LLP
<0.01%#97$13.5M361,462$00+361,462New Buy
JPMORGAN CHASE & CO
<0.01%<0.01%#103$13.0M347,224$95,8085,481+341,743+6,235.05%Add
KENNEDY CAPITAL MANAGEMENT LLC
0.22%0.04%#20$12.6M336,377$1.9M106,791+229,586+214.99%Add
Ophir Asset Management Pty Ltd
1.01%#8$12.2M326,699$00+326,699New Buy
Granahan Investment Management, LLC
0.43%0.34%#16$12.1M324,108$7.0M387,470-63,362-16.35%Reduce
SILVERCREST ASSET MANAGEMENT GROUP LLC
0.08%0.03%#29$11.8M313,943$4.8M269,681+44,262+16.41%Add
STATE STREET CORP
<0.01%<0.01%#115$10.9M291,168$5.1M285,850+5,318+1.86%Add
Nuveen, LLC
<0.01%<0.01%#81$10.6M281,914$851,15447,418+234,496+494.53%Add
BANK OF AMERICA CORP /DE/
<0.01%<0.01%#104$10.4M276,317$3.3M183,599+92,718+50.50%Add
CITADEL ADVISORS LLC
<0.01%<0.01%#96$10.0M266,412$1.0M56,786+209,626+369.15%Add
MILLENNIUM MANAGEMENT LLC
<0.01%<0.01%#75$9.5M253,677$6.8M380,972-127,295-33.41%Reduce
JB CAPITAL PARTNERS LP
1.45%0.77%#5$9.4M250,512$4.5M250,51200.00%Unchanged
Squarepoint Ops LLC
0.01%<0.01%#62$8.9M238,766$2.0M110,569+128,197+115.94%Add
CONGRUENCE CAPITAL, LLC
2.31%1.41%#2$8.8M235,580$4.2M234,475+1,105+0.47%Add
BRIDGEWAY CAPITAL MANAGEMENT, LLC
0.13%0.08%#24$7.5M200,980$4.0M222,703-21,723-9.75%Reduce
TWO SIGMA INVESTMENTS, LP
0.01%<0.01%#67$7.5M198,912$623,00934,708+164,204+473.10%Add
AWM Investment Company, Inc.
0.59%#12$6.7M180,000$00+180,000New Buy
OSTERWEIS CAPITAL MANAGEMENT INC
0.31%#18$6.5M174,600$00+174,600New Buy
TUDOR INVESTMENT CORP ET AL
0.01%#63$6.4M169,848$00+169,848New Buy
LORD, ABBETT & CO. LLC
0.02%#54$5.7M152,175$00+152,175New Buy
PEAK6 LLC
0.01%#59$5.6M150,000$00+150,000New Buy
Wealthspire Advisors, LLC
0.03%0.02%#41$5.3M141,607$2.5M141,60700.00%Unchanged
Pillsbury Lake Capital LLC
1.39%#6$5.1M136,746$00+136,746New Buy
Informed Momentum Co LLC
0.43%#17$4.8M129,182$00+129,182New Buy
Russell Investments Group, Ltd.
<0.01%<0.01%#74$4.7M125,513$2.5M138,215-12,702-9.19%Reduce
SEI INVESTMENTS CO
<0.01%<0.01%#72$4.4M118,607$2.2M122,878-4,271-3.48%Reduce
Empowered Funds, LLC
0.02%0.01%#47$4.4M116,570$2.2M123,293-6,723-5.45%Reduce
NORTHERN TRUST CORP
<0.01%<0.01%#110$4.3M114,995$1.8M100,384+14,611+14.56%Add
Caption Management, LLC
0.02%#52$4.3M114,092$00+114,092New Buy
BNP PARIBAS FINANCIAL MARKETS
<0.01%<0.01%#85$4.2M112,455$50,2242,798+109,657+3,919.12%Add
NEEDHAM INVESTMENT MANAGEMENT LLC
0.12%0.02%#25$4.1M110,000$359,00020,000+90,000+450.00%Add
HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC
0.46%#15$4.0M107,528$00+107,528New Buy
Trexquant Investment LP
0.02%#50$3.8M100,517$00+100,517New Buy

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow