Calamos Advisors’s MasTec MTZ Stock Holding History

Calamos Advisors’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	$3.53M	Sell	8,482 -5,045	-37%	-$1.93M	0.01%	597
2026 Q1	$4.35M	Buy	13,527 +3,886	+40%	+$1.05M	0.02%	577
2025 Q4	$2.1M	Hold	9,641	–	–	0.01%	612
2025 Q3	$2.05M	Buy	+9,641	New	+$1.77M	0.01%	624
2020 Q1	–	Sell	-103,938	Closed	-$6.67M	–	761
2019 Q4	$6.67M	Sell	103,938 -26,302	-20%	-$1.73M	0.03%	466
2019 Q3	$8.46M	Buy	130,240 +28,621	+28%	+$1.67M	0.05%	382
2019 Q2	$5.24M	Buy	+101,619	New	+$5.02M	0.03%	513
2015 Q4	–	Sell	-27,990	Closed	-$443K	–	676
2015 Q3	$443K	Buy	+27,990	New	+$488K	﹤0.01%	604

Other funds holding MTZ

BlackRock New York $6.73T AUM 46.02% 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

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Nordea Investment Management Stockholm, Sweden $123B AUM 38.85% 1-Year Est. Return

HAI

Hennessy Advisors Inc Novato, California $3.13B AUM 77.26% 1-Year Est. Return

OAM

OP Asset Management Helsinki $9.38B AUM 42.35% 1-Year Est. Return

CTB

Country Trust Bank Bloomington, Illinois $5.71B AUM 25.48% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return

KMC

Kirr Marbach & Co Columbus, Indiana $594M AUM 34% 1-Year Est. Return

Calamos Advisors's MTZ Position: Q2 2026 in Review

Calamos Advisors reduced its MasTec (MTZ) stake by 37% in Q2 2026, selling an estimated $1.93M and leaving 8,482 shares worth $3.53M. The position accounts for 0.01% of the portfolio, ranked #597.

Calamos Advisors first reported a position in MTZ in Q3 2015 and has held it in 8 quarters since. The position peaked at $8.46M in Q3 2019. 446 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

Calamos Advisors held 8,482 shares of MasTec worth $3.53M as of Q2 2026.
Calamos Advisors sold 5,045 MasTec shares in Q2 2026, an estimated $1.93M.
MasTec made up 0.01% of Calamos Advisors's portfolio in Q2 2026, its #597 holding.
Calamos Advisors first reported a position in MasTec in Q3 2015 and has held it in 8 quarters since.
Calamos Advisors's MasTec position peaked at $8.46M in Q3 2019.
446 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.