MPM
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Mountaineer Partners Management’s Materion MTRN Stock Holding History

Mountaineer Partners Management’s Portfolio MTRN Stock Details MTRN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q1 		– Sell
-79,742
Closed -$7.88M – 15
2024
Q4 		$7.88M Sell
79,742
-2,034
-2% -$221K 5.77% 12
2024
Q3 		$9.15M Sell
81,776
-13,874
-15% -$1.54M 5.7% 11
2024
Q2 		$10.3M Sell
95,650
-4,521
-5% -$520K 5.38% 8
2024
Q1 		$13.2M Sell
100,171
-5,629
-5% -$713K 6.09% 3
2023
Q4 		$13.8M Buy
+105,800
New +$11.6M 7% 4

Other funds holding MTRN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
TI
Trigran Investments Northbrook, Illinois $418M AUM 3.34% 1-Year Est. Return
VNIM
Vaughan Nelson Investment Management Houston, Texas $11.3B AUM 53% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AAM
ACK Asset Management Greenwich, Connecticut $801M AUM 60.42% 1-Year Est. Return

Mountaineer Partners Management's MTRN Position: Q1 2025 in Review

Mountaineer Partners Management sold out of Materion (MTRN) in Q1 2025, closing a stake of 79,742 shares — an estimated $7.88M sold.

Mountaineer Partners Management first reported a position in MTRN in Q4 2023 and held it in 5 quarters. The position peaked at $13.8M in Q4 2023. 252 funds tracked by Wall St. Rank hold MTRN as of Q1 2025.

  • Mountaineer Partners Management reported no remaining Materion position as of Q1 2025 after selling out during the quarter.
  • Mountaineer Partners Management sold 79,742 Materion shares in Q1 2025, an estimated $7.88M.
  • Mountaineer Partners Management first reported a position in Materion in Q4 2023 and held it in 5 quarters.
  • Mountaineer Partners Management's Materion position peaked at $13.8M in Q4 2023.
  • 252 funds tracked by Wall St. Rank held Materion as of Q1 2025.

Based on Mountaineer Partners Management's 13F filing for Q1 2025, filed 15 May 2025.