State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Mayville Engineering Co MEC Stock Holding History

State of Wisconsin Investment Board’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 		$579K Sell
32,262
-8,435
-21% -$162K ﹤0.01% 1923
2025
Q4 		$762K Buy
40,697
+4,900
+14% +$79.9K ﹤0.01% 1776
2025
Q3 		$493K Buy
35,797
+11,500
+47% +$173K ﹤0.01% 1907
2025
Q2 		$388K Buy
24,297
+9,500
+64% +$136K ﹤0.01% 1969
2025
Q1 		$199K Buy
14,797
+600
+4% +$9.02K ﹤0.01% 2108
2024
Q4 		$223K Buy
+14,197
New +$260K ﹤0.01% 2115
2024
Q3 		– Sell
-12,119
Closed -$202K – 2332
2024
Q2 		$202K Buy
+12,119
New +$183K ﹤0.01% 2155
2023
Q3 		– Sell
-26,400
Closed -$329K – 2567
2023
Q2 		$329K Sell
26,400
-12,900
-33% -$163K ﹤0.01% 1968
2023
Q1 		$586K Sell
39,300
-11,500
-23% -$168K ﹤0.01% 1797
2022
Q4 		$643K Sell
50,800
-7,879
-13% -$78.6K ﹤0.01% 1785
2022
Q3 		$382K Sell
58,679
-10,818
-16% -$77.8K ﹤0.01% 2100
2022
Q2 		$538K Buy
69,497
+25,297
+57% +$215K ﹤0.01% 2042
2022
Q1 		$414K Buy
44,200
+25,200
+133% +$286K ﹤0.01% 2001
2021
Q4 		$283K Buy
19,000
+5,300
+39% +$87.3K ﹤0.01% 2000
2021
Q3 		$258K Buy
+13,700
New +$235K ﹤0.01% 2021

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 $59.9B AUM 27.01% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return

State of Wisconsin Investment Board's MEC Position: Q1 2026 in Review

State of Wisconsin Investment Board reduced its Mayville Engineering Co (MEC) stake by 21% in Q1 2026, selling an estimated $162K and leaving 32,262 shares worth $579K. The position accounts for ﹤0.01% of the portfolio, ranked #1923.

State of Wisconsin Investment Board first reported a position in MEC in Q3 2021 and has held it in 15 quarters since. The position peaked at $762K in Q4 2025. 124 funds tracked by Wall St. Rank hold MEC as of Q1 2026.

  • State of Wisconsin Investment Board held 32,262 shares of Mayville Engineering Co worth $579K as of Q1 2026.
  • State of Wisconsin Investment Board sold 8,435 Mayville Engineering Co shares in Q1 2026, an estimated $162K.
  • Mayville Engineering Co made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #1923 holding.
  • State of Wisconsin Investment Board first reported a position in Mayville Engineering Co in Q3 2021 and has held it in 15 quarters since.
  • State of Wisconsin Investment Board's Mayville Engineering Co position peaked at $762K in Q4 2025.
  • 124 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.