Arrowstreet Capital
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Arrowstreet Capital’s Mayville Engineering Co MEC Stock Holding History

Arrowstreet Capital’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 		– Sell
-185,261
Closed -$3.33M – 2047
2026
Q1 		$3.33M Sell
185,261
-103,189
-36% -$1.99M ﹤0.01% 1279
2025
Q4 		$5.4M Buy
288,450
+19,815
+7% +$323K ﹤0.01% 1114
2025
Q3 		$3.7M Hold
268,635
– – ﹤0.01% 1276
2025
Q2 		$4.29M Buy
268,635
+2,235
+0.8% +$31.9K ﹤0.01% 1226
2025
Q1 		$3.58M Buy
266,400
+14,004
+6% +$211K ﹤0.01% 1121
2024
Q4 		$3.97M Buy
252,396
+80,905
+47% +$1.48M ﹤0.01% 1069
2024
Q3 		$3.62M Buy
171,491
+139,016
+428% +$2.6M ﹤0.01% 1061
2024
Q2 		$541K Buy
+32,475
New +$491K ﹤0.01% 1319
2023
Q4 		– Sell
-11,454
Closed -$126K – 1500
2023
Q3 		$126K Sell
11,454
-34,687
-75% -$401K ﹤0.01% 1214
2023
Q2 		$575K Sell
46,141
-23,425
-34% -$296K ﹤0.01% 1051
2023
Q1 		$1.04M Buy
69,566
+32,999
+90% +$481K ﹤0.01% 1055
2022
Q4 		$463K Buy
+36,567
New +$365K ﹤0.01% 1145
2022
Q2 		– Sell
-41,616
Closed -$390K – 1345
2022
Q1 		$390K Sell
41,616
-40,036
-49% -$454K ﹤0.01% 1055
2021
Q4 		$1.22M Buy
81,652
+41,147
+102% +$678K ﹤0.01% 1120
2021
Q3 		$761K Sell
40,505
-1,615
-4% -$27.7K ﹤0.01% 1348
2021
Q2 		$847K Buy
42,120
+25,603
+155% +$452K ﹤0.01% 1577
2021
Q1 		$238K Buy
+16,517
New +$243K ﹤0.01% 2120

Other funds holding MEC

PCM
Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Allspring Global Investments
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
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
RA
Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Arrowstreet Capital's MEC Position: Q2 2026 in Review

Arrowstreet Capital sold out of Mayville Engineering Co (MEC) in Q2 2026, closing a stake of 185,261 shares — an estimated $3.33M sold.

Arrowstreet Capital first reported a position in MEC in Q1 2021 and held it in 17 quarters. The position peaked at $5.4M in Q4 2025. 155 funds tracked by Wall St. Rank hold MEC as of Q2 2026.

  • Arrowstreet Capital reported no remaining Mayville Engineering Co position as of Q2 2026 after selling out during the quarter.
  • Arrowstreet Capital sold 185,261 Mayville Engineering Co shares in Q2 2026, an estimated $3.33M.
  • Arrowstreet Capital first reported a position in Mayville Engineering Co in Q1 2021 and held it in 17 quarters.
  • Arrowstreet Capital's Mayville Engineering Co position peaked at $5.4M in Q4 2025.
  • 155 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.