SEI Investments’s Mayville Engineering Co MEC Stock Holding History

SEI Investments’s Portfolio MEC Stock Details MEC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$4.44M	Sell	118,607 -4,271	-3%	-$114K	﹤0.01%	1564
2026 Q1	$2.21M	Buy	122,878 +39,309	+47%	+$757K	﹤0.01%	1958
2025 Q4	$1.56M	Buy	83,569 +28,255	+51%	+$461K	﹤0.01%	1978
2025 Q3	$761K	Buy	55,314 +3,824	+7%	+$57.5K	﹤0.01%	2073
2025 Q2	$822K	Buy	51,490 +6,103	+13%	+$87.2K	﹤0.01%	2000
2025 Q1	$610K	Sell	45,387 -3,183	-7%	-$47.9K	﹤0.01%	2079
2024 Q4	$764K	Buy	48,570 +2,353	+5%	+$43K	﹤0.01%	2042
2024 Q3	$974K	Buy	46,217 +7,585	+20%	+$142K	﹤0.01%	1955
2024 Q2	$644K	Buy	38,632 +5,444	+16%	+$82.3K	﹤0.01%	2072
2024 Q1	$476K	Hold	33,188	–	–	﹤0.01%	2128
2023 Q4	$479K	Sell	33,188 -956	-3%	-$11.9K	﹤0.01%	2128
2023 Q3	$375K	Buy	34,144 +6,564	+24%	+$75.8K	﹤0.01%	2223
2023 Q2	$344K	Buy	27,580 +2,834	+11%	+$35.8K	﹤0.01%	2284
2023 Q1	$369K	Buy	+24,746	New	+$361K	﹤0.01%	2255
2022 Q4	–	Sell	-15,592	Closed	-$102K	–	2619
2022 Q3	$102K	Hold	15,592	–	–	﹤0.01%	2563
2022 Q2	$121K	Buy	+15,592	New	+$132K	﹤0.01%	2544

Other funds holding MEC

PCM

Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Allspring Global Investments Charlotte, North Carolina $65.2B AUM 39.42% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return

SPPAM

Summit Partners Public Asset Management Boston, Massachusetts $5.69B AUM 259.25% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

SEI Investments's MEC Position: Q2 2026 in Review

SEI Investments reduced its Mayville Engineering Co (MEC) stake by 3.5% in Q2 2026, selling an estimated $114K and leaving 118,607 shares worth $4.44M. The position accounts for ﹤0.01% of the portfolio, ranked #1564.

SEI Investments first reported a position in MEC in Q2 2022 and has held it in 16 quarters since. 155 funds tracked by Wall St. Rank hold MEC as of Q2 2026.

SEI Investments held 118,607 shares of Mayville Engineering Co worth $4.44M as of Q2 2026.
SEI Investments sold 4,271 Mayville Engineering Co shares in Q2 2026, an estimated $114K.
Mayville Engineering Co made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #1564 holding.
SEI Investments first reported a position in Mayville Engineering Co in Q2 2022 and has held it in 16 quarters since.
155 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.