RhumbLine Advisers
MEC icon

RhumbLine Advisers’s Mayville Engineering Co MEC Stock Holding History

RhumbLine Advisers’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
Q3 		$309K Buy
20,594
+593
+3% +$14.3K ﹤0.01% 3018
2026
Q2 		$749K Buy
20,001
+1,801
+10% +$48.1K ﹤0.01% 2503
2026
Q1 		$327K Buy
18,200
+168
+0.9% +$3.23K ﹤0.01% 2876
2025
Q4 		$338K Sell
18,032
-2,021
-10% -$33K ﹤0.01% 2899
2025
Q3 		$276K Buy
20,053
+84
+0.4% +$1.26K ﹤0.01% 3052
2025
Q2 		$319K Buy
19,969
+1,526
+8% +$21.8K ﹤0.01% 2952
2025
Q1 		$248K Sell
18,443
-742
-4% -$11.2K ﹤0.01% 3000
2024
Q4 		$302K Buy
19,185
+613
+3% +$11.2K ﹤0.01% 2982
2024
Q3 		$391K Sell
18,572
-709
-4% -$13.3K ﹤0.01% 2872
2024
Q2 		$321K Buy
19,281
+6,348
+49% +$96K ﹤0.01% 2957
2024
Q1 		$185K Sell
12,933
-164
-1% -$2.14K ﹤0.01% 3220
2023
Q4 		$189K Sell
13,097
-171
-1% -$2.12K ﹤0.01% 3218
2023
Q3 		$146K Buy
13,268
+518
+4% +$5.98K ﹤0.01% 3321
2023
Q2 		$159K Buy
+12,750
New +$161K ﹤0.01% 3357

Other funds holding MEC

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $64.1B AUM 28.9% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
EVR Research
EVR Research Richmond, Virginia $179M AUM 29.7% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $123B AUM 30.05% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Royce & Associates
Royce & Associates New York $11B AUM 39.4% 1-Year Est. Return
William Blair & Company
William Blair & Company Chicago, Illinois $38.6B AUM 22.09% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

RhumbLine Advisers's MEC Position: Q3 2026 in Review

RhumbLine Advisers increased its Mayville Engineering Co (MEC) stake by 3% in Q3 2026, buying an estimated $14.3K and bringing the position to 20,594 shares worth $309K. The position accounts for ﹤0.01% of the portfolio, ranked #3018.

RhumbLine Advisers first reported a position in MEC in Q2 2023 and has held it in 14 quarters since. The position peaked at $749K in Q2 2026. 92 funds tracked by Wall St. Rank hold MEC as of Q3 2026.

  • RhumbLine Advisers held 20,594 shares of Mayville Engineering Co worth $309K as of Q3 2026.
  • RhumbLine Advisers bought 593 Mayville Engineering Co shares in Q3 2026, an estimated $14.3K.
  • Mayville Engineering Co made up ﹤0.01% of RhumbLine Advisers's portfolio in Q3 2026, its #3018 holding.
  • RhumbLine Advisers first reported a position in Mayville Engineering Co in Q2 2023 and has held it in 14 quarters since.
  • RhumbLine Advisers's Mayville Engineering Co position peaked at $749K in Q2 2026.
  • 92 funds tracked by Wall St. Rank held Mayville Engineering Co as of Q3 2026.

Based on RhumbLine Advisers's 13F filing for Q3 2026, filed 10 Nov 2026.