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David Shaw’s Mayville Engineering Co MEC Stock Holding History

David Shaw’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 $65.2B AUM 39.42% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return
RA
Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return
ER
EVR Research Richmond, Virginia $203M AUM 60.82% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
William Blair & Company
William Blair & Company Chicago, Illinois $38.4B AUM 25.71% 1-Year Est. Return
First Eagle Investment Management
First Eagle Investment Management New York $59.9B AUM 27.01% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.81B AUM 83.9% 1-Year Est. Return

David Shaw's MEC Position: Q1 2026 in Review

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

David Shaw 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.

  • David Shaw reported no remaining Mayville Engineering Co position as of Q1 2026 after selling out during the quarter.
  • David Shaw sold 19,416 Mayville Engineering Co shares in Q1 2026, an estimated $363K.
  • David Shaw first reported a position in Mayville Engineering Co in Q3 2021 and held it in 6 quarters.
  • David Shaw'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.