GSA Capital Partners’s Mayville Engineering Co MEC Stock Holding History

GSA Capital Partners’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	$255K	Buy	+6,814	New	+$182K	0.02%	1398
2025 Q2	–	Sell	-26,552	Closed	-$357K	–	1986
2025 Q1	$357K	Buy	26,552 +6,296	+31%	+$94.7K	0.03%	1032
2024 Q4	$318K	Buy	+20,256	New	+$370K	0.02%	1166
2023 Q2	–	Sell	-10,949	Closed	-$163K	–	1773
2023 Q1	$163K	Sell	10,949 -18,331	-63%	-$267K	0.02%	1293
2022 Q4	$371K	Sell	29,280 -7,271	-20%	-$72.5K	0.05%	799
2022 Q3	$238K	Buy	+36,551	New	+$263K	0.03%	1088

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

GSA Capital Partners's MEC Position: Q2 2026 in Review

GSA Capital Partners opened a new position in Mayville Engineering Co (MEC) in Q2 2026: 6,814 shares worth $255K. The stake represents 0.02% of the portfolio and ranks #1398 among its holdings. This is a return to the name: GSA Capital Partners previously reported a position in MEC as recently as Q1 2025.

GSA Capital Partners first reported a position in MEC in Q3 2022 and has held it in 6 quarters since. The position peaked at $371K in Q4 2022. 155 funds tracked by Wall St. Rank hold MEC as of Q2 2026.

GSA Capital Partners held 6,814 shares of Mayville Engineering Co worth $255K as of Q2 2026.
Mayville Engineering Co was a new GSA Capital Partners position in Q2 2026.
Mayville Engineering Co made up 0.02% of GSA Capital Partners's portfolio in Q2 2026, its #1398 holding.
GSA Capital Partners first reported a position in Mayville Engineering Co in Q3 2022 and has held it in 6 quarters since.
GSA Capital Partners's Mayville Engineering Co position peaked at $371K in Q4 2022.
155 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q2 2026.

Based on GSA Capital Partners's 13F filing for Q2 2026, filed 6 Aug 2026.