Ossiam’s MasTec MTZ Stock Holding History

Ossiam’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	$508K	Buy	+1,221	New	+$467K	0.01%	503
2025 Q4	–	Sell	-6,545	Closed	-$1.39M	–	586
2025 Q3	$1.39M	Buy	+6,545	New	+$1.2M	0.02%	399

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

Ossiam's MTZ Position: Q2 2026 in Review

Ossiam opened a new position in MasTec (MTZ) in Q2 2026: 1,221 shares worth $508K. The stake represents 0.01% of the portfolio and ranks #503 among its holdings. This is a return to the name: Ossiam previously reported a position in MTZ as recently as Q3 2025.

Ossiam first reported a position in MTZ in Q3 2025 and has held it in 2 quarters since. The position peaked at $1.39M in Q3 2025. 911 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

Ossiam held 1,221 shares of MasTec worth $508K as of Q2 2026.
MasTec was a new Ossiam position in Q2 2026.
MasTec made up 0.01% of Ossiam's portfolio in Q2 2026, its #503 holding.
Ossiam first reported a position in MasTec in Q3 2025 and has held it in 2 quarters since.
Ossiam's MasTec position peaked at $1.39M in Q3 2025.
911 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Ossiam's 13F filing for Q2 2026, filed 13 Aug 2026.