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Driehaus Capital Management’s Mayville Engineering Co MEC Stock Holding History

Driehaus Capital Management’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 		$31.7M Buy
+846,354
New +$22.6M 0.18% 171
2019
Q4 		– Sell
-316,171
Closed -$4.17M – 542
2019
Q3 		$4.17M Buy
316,171
+12,437
+4% +$166K 0.14% 181
2019
Q2 		$4.19M Buy
+303,734
New +$4.68M 0.13% 179

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
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
JT
Jupiter Topco New York $245B AUM

Driehaus Capital Management's MEC Position: Q2 2026 in Review

Driehaus Capital Management opened a new position in Mayville Engineering Co (MEC) in Q2 2026: 846,354 shares worth $31.7M. The stake represents 0.18% of the portfolio and ranks #171 among its holdings. This is a return to the name: Driehaus Capital Management previously reported a position in MEC as recently as Q3 2019.

Driehaus Capital Management first reported a position in MEC in Q2 2019 and has held it in 3 quarters since. 155 funds tracked by Wall St. Rank hold MEC as of Q2 2026.

  • Driehaus Capital Management held 846,354 shares of Mayville Engineering Co worth $31.7M as of Q2 2026.
  • Mayville Engineering Co was a new Driehaus Capital Management position in Q2 2026.
  • Mayville Engineering Co made up 0.18% of Driehaus Capital Management's portfolio in Q2 2026, its #171 holding.
  • Driehaus Capital Management first reported a position in Mayville Engineering Co in Q2 2019 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 Driehaus Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.