Zweig-DiMenna Associates’s MasTec MTZ Stock Holding History

Zweig-DiMenna Associates’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 Q1	–	Sell	-40,000	Closed	-$8.69M	–	88
2025 Q4	$8.69M	Buy	+40,000	New	+$8.39M	0.54%	62

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

HCC

Hill City Capital Boston, Massachusetts $4.28B AUM 80.76% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return

LPC

Lone Pine Capital Greenwich, Connecticut $16.4B AUM 99.7% 1-Year Est. Return

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

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Zweig-DiMenna Associates's MTZ Position: Q1 2026 in Review

Zweig-DiMenna Associates sold out of MasTec (MTZ) in Q1 2026, closing a stake of 40,000 shares — an estimated $8.69M sold.

Zweig-DiMenna Associates first reported a position in MTZ in Q4 2025 and held it in 1 quarter. The position peaked at $8.69M in Q4 2025. 811 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.

Zweig-DiMenna Associates reported no remaining MasTec position as of Q1 2026 after selling out during the quarter.
Zweig-DiMenna Associates sold 40,000 MasTec shares in Q1 2026, an estimated $8.69M.
Zweig-DiMenna Associates first reported a position in MasTec in Q4 2025 and held it in 1 quarter.
Zweig-DiMenna Associates's MasTec position peaked at $8.69M in Q4 2025.
811 funds tracked by Wall St. Rank held MasTec as of Q1 2026.

Based on Zweig-DiMenna Associates's 13F filing for Q1 2026, filed 5 May 2026.