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Harvey Partners’s Materion MTRN Stock Holding History

Harvey Partners’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
2026
Q2 		$65.4M Sell
220,068
-73,053
-25% -$15.3M 4.48% 2
2026
Q1 		$42.4M Sell
293,121
-26,379
-8% -$3.84M 3.37% 7
2025
Q4 		$39.7M Buy
319,500
+1,500
+0.5% +$185K 3.52% 7
2025
Q3 		$38.4M Buy
+318,000
New +$33.4M 3.42% 9

Other funds holding MTRN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Fisher Asset Management
Fisher Asset Management Camas, Washington $336B AUM 34.66% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return

Harvey Partners's MTRN Position: Q2 2026 in Review

Harvey Partners reduced its Materion (MTRN) stake by 25% in Q2 2026, selling an estimated $15.3M and leaving 220,068 shares worth $65.4M. The position accounts for 4.48% of the portfolio, ranked #2.

Harvey Partners first reported a position in MTRN in Q3 2025 and has held it in 4 quarters since. 402 funds tracked by Wall St. Rank hold MTRN as of Q2 2026.

  • Harvey Partners held 220,068 shares of Materion worth $65.4M as of Q2 2026.
  • Harvey Partners sold 73,053 Materion shares in Q2 2026, an estimated $15.3M.
  • Materion made up 4.48% of Harvey Partners's portfolio in Q2 2026, its #2 holding.
  • Harvey Partners first reported a position in Materion in Q3 2025 and has held it in 4 quarters since.
  • 402 funds tracked by Wall St. Rank held Materion as of Q2 2026.

Based on Harvey Partners's 13F filing for Q2 2026, filed 14 Aug 2026.