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Daniel Loeb’s MasTec MTZ Stock Holding History

Daniel Loeb’s Portfolio MTZ Stock Details MTZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$121M Sell
290,000
-30,000
-9% -$11.5M 2.58% 17
2026
Q1 		$103M Sell
320,000
-605,000
-65% -$164M 4.94% 6
2025
Q4 		$201M Buy
925,000
+200,000
+28% +$42M 2.76% 16
2025
Q3 		$154M Buy
+725,000
New +$133M 1.72% 25

Other funds holding MTZ

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PP
Peconic Partners New York $8.04B AUM 107.18% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
HCC
Hill City Capital Boston, Massachusetts $4.28B AUM 80.76% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
LPC
Lone Pine Capital Greenwich, Connecticut $16.4B AUM 99.7% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

Daniel Loeb's MTZ Position: Q2 2026 in Review

Daniel Loeb reduced its MasTec (MTZ) stake by 9.4% in Q2 2026, selling an estimated $11.5M and leaving 290,000 shares worth $121M. The position accounts for 2.58% of the portfolio, ranked #17.

Daniel Loeb first reported a position in MTZ in Q3 2025 and has held it in 4 quarters since. The position peaked at $201M in Q4 2025. 908 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

  • Daniel Loeb held 290,000 shares of MasTec worth $121M as of Q2 2026.
  • Daniel Loeb sold 30,000 MasTec shares in Q2 2026, an estimated $11.5M.
  • MasTec made up 2.58% of Daniel Loeb's portfolio in Q2 2026, its #17 holding.
  • Daniel Loeb first reported a position in MasTec in Q3 2025 and has held it in 4 quarters since.
  • Daniel Loeb's MasTec position peaked at $201M in Q4 2025.
  • 908 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Third Point's 13F filing for Q2 2026, filed 14 Aug 2026.