Oppenheimer Asset Management’s MasTec MTZ Stock Holding History

Oppenheimer Asset Management’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	$218K	Buy	+677	New	+$183K	﹤0.01%	1044
2025 Q4	–	Sell	-1,029	Closed	-$219K	–	1161
2025 Q3	$219K	Buy	+1,029	New	+$188K	﹤0.01%	1076
2020 Q2	–	Sell	-1,439	Closed	-$47K	–	1293
2020 Q1	$47K	Sell	1,439 -1,408	-49%	-$71.6K	﹤0.01%	1271
2019 Q4	$183K	Buy	2,847 +170	+6%	+$11.2K	﹤0.01%	1078
2019 Q3	$173K	Buy	2,677 +370	+16%	+$21.6K	﹤0.01%	1069
2019 Q2	$119K	Buy	2,307 +168	+8%	+$8.3K	﹤0.01%	1181
2019 Q1	$103K	Sell	2,139 -52	-2%	-$2.34K	﹤0.01%	1199
2018 Q4	$89K	Sell	2,191 -5,404	-71%	-$233K	﹤0.01%	1214
2018 Q3	$339K	Buy	7,595 +200	+3%	+$9.26K	0.01%	925
2018 Q2	$376K	Sell	7,395 -735	-9%	-$35.5K	0.01%	879
2018 Q1	$383K	Sell	8,130 -322	-4%	-$16.3K	0.01%	853
2017 Q4	$392K	Hold	8,452	–	–	0.01%	855
2017 Q3	$392K	Sell	8,452 -96	-1%	-$4.18K	0.01%	859
2017 Q2	$386K	Buy	8,548 +6,908	+421%	+$299K	0.01%	853
2017 Q1	$66K	Buy	+1,640	New	+$62.8K	﹤0.01%	1281

Other funds holding MTZ

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Peconic Partners New York $5.78B AUM 127.23% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

HCC

Hill City Capital Boston, Massachusetts $2.8B AUM 79.27% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return

LPC

Lone Pine Capital Greenwich, Connecticut $12.5B AUM 54.4% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Oppenheimer Asset Management's MTZ Position: Q1 2026 in Review

Oppenheimer Asset Management opened a new position in MasTec (MTZ) in Q1 2026: 677 shares worth $218K. The stake represents ﹤0.01% of the portfolio and ranks #1044 among its holdings. This is a return to the name: Oppenheimer Asset Management previously reported a position in MTZ as recently as Q3 2025.

Oppenheimer Asset Management first reported a position in MTZ in Q1 2017 and has held it in 15 quarters since. The position peaked at $392K in Q4 2017. 806 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.

Oppenheimer Asset Management held 677 shares of MasTec worth $218K as of Q1 2026.
MasTec was a new Oppenheimer Asset Management position in Q1 2026.
MasTec made up ﹤0.01% of Oppenheimer Asset Management's portfolio in Q1 2026, its #1044 holding.
Oppenheimer Asset Management first reported a position in MasTec in Q1 2017 and has held it in 15 quarters since.
Oppenheimer Asset Management's MasTec position peaked at $392K in Q4 2017.
806 funds tracked by Wall St. Rank held MasTec as of Q1 2026.

Based on Oppenheimer Asset Management's 13F filing for Q1 2026, filed 24 Apr 2026.