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
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

Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return
RA
Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return
ER
EVR Research Richmond, Virginia $250M AUM 41.5% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
William Blair & Company
William Blair & Company Chicago, Illinois $34.9B AUM 18.88% 1-Year Est. Return
First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return

Arrowstreet Capital's MEC Position: Q1 2026 in Review

Arrowstreet Capital reduced its Mayville Engineering Co (MEC) stake by 36% in Q1 2026, selling an estimated $1.99M and leaving 185,261 shares worth $3.33M. The position accounts for ﹤0.01% of the portfolio, ranked #1279.

Arrowstreet Capital first reported a position in MEC in Q1 2021 and has held it in 17 quarters since. The position peaked at $5.4M in Q4 2025. 124 funds tracked by Wall St. Rank hold MEC as of Q1 2026.

  • Arrowstreet Capital held 185,261 shares of Mayville Engineering Co worth $3.33M as of Q1 2026.
  • Arrowstreet Capital sold 103,189 Mayville Engineering Co shares in Q1 2026, an estimated $1.99M.
  • Mayville Engineering Co made up ﹤0.01% of Arrowstreet Capital's portfolio in Q1 2026, its #1279 holding.
  • Arrowstreet Capital first reported a position in Mayville Engineering Co in Q1 2021 and has held it in 17 quarters since.
  • Arrowstreet Capital's Mayville Engineering Co position peaked at $5.4M in Q4 2025.
  • 124 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q1 2026.

Based on Arrowstreet Capital's 13F filing for Q1 2026, filed 14 May 2026.