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
Q2 		– Sell
-124
Closed -$2.23K – 2961
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

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

Optiver Holding's MEC Position: Q2 2026 in Review

Optiver Holding sold out of Mayville Engineering Co (MEC) in Q2 2026, closing a stake of 124 shares — an estimated $2.23K sold.

Optiver Holding first reported a position in MEC in Q3 2025 and held it in 3 quarters. The position peaked at $4.42K in Q4 2025. 155 funds tracked by Wall St. Rank hold MEC as of Q2 2026.

  • Optiver Holding reported no remaining Mayville Engineering Co position as of Q2 2026 after selling out during the quarter.
  • Optiver Holding sold 124 Mayville Engineering Co shares in Q2 2026, an estimated $2.23K.
  • Optiver Holding first reported a position in Mayville Engineering Co in Q3 2025 and held it in 3 quarters.
  • Optiver Holding's Mayville Engineering Co position peaked at $4.42K in Q4 2025.
  • 155 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.