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

Walleye 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 		$3.5M Buy
+93,444
New +$2.5M 0.01% 1061
2024
Q4 		– Sell
-21,672
Closed -$457K – 5257
2024
Q3 		$457K Sell
21,672
-2,428
-10% -$45.4K ﹤0.01% 3379
2024
Q2 		$402K Buy
+24,100
New +$364K ﹤0.01% 3694

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

Walleye Capital's MEC Position: Q2 2026 in Review

Walleye Capital opened a new position in Mayville Engineering Co (MEC) in Q2 2026: 93,444 shares worth $3.5M. The stake represents 0.01% of the portfolio and ranks #1061 among its holdings. This is a return to the name: Walleye Capital previously reported a position in MEC as recently as Q3 2024.

Walleye Capital first reported a position in MEC in Q2 2024 and has held it in 3 quarters since. 155 funds tracked by Wall St. Rank hold MEC as of Q2 2026.

  • Walleye Capital held 93,444 shares of Mayville Engineering Co worth $3.5M as of Q2 2026.
  • Mayville Engineering Co was a new Walleye Capital position in Q2 2026.
  • Mayville Engineering Co made up 0.01% of Walleye Capital's portfolio in Q2 2026, its #1061 holding.
  • Walleye Capital first reported a position in Mayville Engineering Co in Q2 2024 and has held it in 3 quarters since.
  • 155 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q2 2026.

Based on Walleye Capital's 13F filing for Q2 2026, filed 3 Aug 2026.