Optiver Holding
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Optiver Holding’s Mayville Engineering Co MEC Stock Holding History

Optiver Holding’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 		$2.23K Sell
124
-112
-47% -$2.16K ﹤0.01% 1799
2025
Q4 		$4.42K Hold
236
– – ﹤0.01% 1459
2025
Q3 		$3.25K Buy
+236
New +$3.55K ﹤0.01% 2130

Other funds holding MEC

Allspring Global Investments
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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

Optiver Holding's MEC Position: Q1 2026 in Review

Optiver Holding reduced its Mayville Engineering Co (MEC) stake by 47% in Q1 2026, selling an estimated $2.16K and leaving 124 shares worth $2.23K. The position accounts for ﹤0.01% of the portfolio, ranked #1799.

Optiver Holding first reported a position in MEC in Q3 2025 and has held it in 3 quarters since. The position peaked at $4.42K in Q4 2025. 124 funds tracked by Wall St. Rank hold MEC as of Q1 2026.

  • Optiver Holding held 124 shares of Mayville Engineering Co worth $2.23K as of Q1 2026.
  • Optiver Holding sold 112 Mayville Engineering Co shares in Q1 2026, an estimated $2.16K.
  • Mayville Engineering Co made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #1799 holding.
  • Optiver Holding first reported a position in Mayville Engineering Co in Q3 2025 and has held it in 3 quarters since.
  • Optiver Holding's Mayville Engineering Co position peaked at $4.42K in Q4 2025.
  • 124 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.