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ACK Asset Management’s Matrix Service MTRX Stock Holding History

ACK Asset Management’s Portfolio MTRX Stock Details MTRX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-1,087,100
Closed -$14.7M – 25
2025
Q2 		$14.7M Sell
1,087,100
-97,000
-8% -$1.17M 1.93% 18
2025
Q1 		$14.7M Buy
1,184,100
+4,199
+0.4% +$56.2K 2.42% 17
2024
Q4 		$14.1M Buy
1,179,901
+378,901
+47% +$4.64M 1.89% 19
2024
Q3 		$9.24M Buy
+801,000
New +$7.95M 1.14% 17

Other funds holding MTRX

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
NIM
Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return
WCM
Westerly Capital Management San Francisco, California $368M AUM 42.67% 1-Year Est. Return
GJL
Gendell Jeffrey L $7.34B AUM 183.72% 1-Year Est. Return
HP
Harvey Partners Tarrytown, New York $1.26B AUM 64.44% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
FWSM
First Wilshire Securities Management Pasadena, California $444M AUM 42.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

ACK Asset Management's MTRX Position: Q3 2025 in Review

ACK Asset Management sold out of Matrix Service (MTRX) in Q3 2025, closing a stake of 1,087,100 shares — an estimated $14.7M sold.

ACK Asset Management first reported a position in MTRX in Q3 2024 and held it in 4 quarters. The position peaked at $14.7M in Q1 2025. 143 funds tracked by Wall St. Rank hold MTRX as of Q3 2025.

  • ACK Asset Management reported no remaining Matrix Service position as of Q3 2025 after selling out during the quarter.
  • ACK Asset Management sold 1,087,100 Matrix Service shares in Q3 2025, an estimated $14.7M.
  • ACK Asset Management first reported a position in Matrix Service in Q3 2024 and held it in 4 quarters.
  • ACK Asset Management's Matrix Service position peaked at $14.7M in Q1 2025.
  • 143 funds tracked by Wall St. Rank held Matrix Service as of Q3 2025.

Based on ACK Asset Management's 13F filing for Q3 2025, filed 14 Nov 2025.