D.E. Shaw & Co
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D.E. Shaw & Co’s Mayville Engineering Co MEC Stock Holding History

D.E. Shaw & Co’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 		– Sell
-19,416
Closed -$363K – 4843
2025
Q4 		$363K Buy
+19,416
New +$317K ﹤0.01% 4072
2022
Q4 		– Sell
-28,231
Closed -$183K – 4999
2022
Q3 		$183K Buy
28,231
+11,412
+68% +$82.1K ﹤0.01% 4492
2022
Q2 		$130K Sell
16,819
-4,703
-22% -$39.9K ﹤0.01% 4673
2022
Q1 		$202K Buy
21,522
+4,713
+28% +$53.5K ﹤0.01% 4861
2021
Q4 		$251K Sell
16,809
-1,915
-10% -$31.6K ﹤0.01% 4770
2021
Q3 		$352K Buy
+18,724
New +$321K ﹤0.01% 4271

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 $59B AUM 32.99% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return

D.E. Shaw & Co's MEC Position: Q1 2026 in Review

D.E. Shaw & Co sold out of Mayville Engineering Co (MEC) in Q1 2026, closing a stake of 19,416 shares — an estimated $363K sold.

D.E. Shaw & Co first reported a position in MEC in Q3 2021 and held it in 6 quarters. The position peaked at $363K in Q4 2025. 124 funds tracked by Wall St. Rank hold MEC as of Q1 2026.

  • D.E. Shaw & Co reported no remaining Mayville Engineering Co position as of Q1 2026 after selling out during the quarter.
  • D.E. Shaw & Co sold 19,416 Mayville Engineering Co shares in Q1 2026, an estimated $363K.
  • D.E. Shaw & Co first reported a position in Mayville Engineering Co in Q3 2021 and held it in 6 quarters.
  • D.E. Shaw & Co's Mayville Engineering Co position peaked at $363K in Q4 2025.
  • 124 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q1 2026.

Based on D.E. Shaw & Co's 13F filing for Q1 2026, filed 15 May 2026.