Hartree Partners’s MasTec MTZ Stock Holding History

Hartree Partners’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	–	Sell	-800	Closed	-$257K	–	148
2026 Q1	$257K	Buy	+800	New	+$217K	0.06%	106
2025 Q3	–	Sell	-3,000	Closed	-$511K	–	94
2025 Q2	$511K	Buy	+3,000	New	+$432K	0.14%	44

Other funds holding MTZ

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Peconic Partners New York $8.04B AUM 107.18% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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 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 Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

Hartree Partners's MTZ Position: Q2 2026 in Review

Hartree Partners sold out of MasTec (MTZ) in Q2 2026, closing a stake of 800 shares — an estimated $257K sold.

Hartree Partners first reported a position in MTZ in Q2 2025 and held it in 2 quarters. The position peaked at $511K in Q2 2025. 911 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

Hartree Partners reported no remaining MasTec position as of Q2 2026 after selling out during the quarter.
Hartree Partners sold 800 MasTec shares in Q2 2026, an estimated $257K.
Hartree Partners first reported a position in MasTec in Q2 2025 and held it in 2 quarters.
Hartree Partners's MasTec position peaked at $511K in Q2 2025.
911 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Hartree Partners's 13F filing for Q2 2026, filed 12 Aug 2026.