Oppenheimer & Co’s MasTec MTZ Stock Holding History

Oppenheimer & Co’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	$325K	Buy	781 +19	+2%	+$7.26K	﹤0.01%	1442
2026 Q1	$245K	Buy	+762	New	+$206K	﹤0.01%	1480
2025 Q4	–	Sell	-8,472	Closed	-$1.8M	–	1687
2025 Q3	$1.8M	Buy	+8,472	New	+$1.55M	0.02%	645
2023 Q3	–	Sell	-1,953	Closed	-$230K	–	1435
2023 Q2	$230K	Sell	1,953 -2,300	-54%	-$225K	﹤0.01%	1247
2023 Q1	$402K	Buy	+4,253	New	+$404K	0.01%	1018
2018 Q3	–	Sell	-5,859	Closed	-$297K	–	1380
2018 Q2	$297K	Buy	+5,859	New	+$283K	0.01%	1066
2018 Q1	–	Sell	-6,945	Closed	-$340K	–	1371
2017 Q4	$340K	Buy	6,945 +248	+4%	+$11.1K	0.01%	1010
2017 Q3	$311K	Buy	6,697 +2,030	+43%	+$88.4K	0.01%	1023
2017 Q2	$211K	Sell	4,667 -1,529	-25%	-$66.1K	0.01%	1163
2017 Q1	$248K	Sell	6,196 -1,804	-23%	-$69K	0.01%	1073
2016 Q4	$306K	Hold	8,000	–	–	0.01%	987
2016 Q3	$238K	Sell	8,000 -11,500	-59%	-$315K	0.01%	1068
2016 Q2	$435K	Sell	19,500 -8,500	-30%	-$189K	0.01%	837
2016 Q1	$567K	Buy	+28,000	New	+$458K	0.02%	712

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

Oppenheimer & Co's MTZ Position: Q2 2026 in Review

Oppenheimer & Co increased its MasTec (MTZ) stake by 2.5% in Q2 2026, buying an estimated $7.26K and bringing the position to 781 shares worth $325K. The position accounts for ﹤0.01% of the portfolio, ranked #1442.

Oppenheimer & Co first reported a position in MTZ in Q1 2016 and has held it in 14 quarters since. The position peaked at $1.8M in Q3 2025. 911 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

Oppenheimer & Co held 781 shares of MasTec worth $325K as of Q2 2026.
Oppenheimer & Co bought 19 MasTec shares in Q2 2026, an estimated $7.26K.
MasTec made up ﹤0.01% of Oppenheimer & Co's portfolio in Q2 2026, its #1442 holding.
Oppenheimer & Co first reported a position in MasTec in Q1 2016 and has held it in 14 quarters since.
Oppenheimer & Co's MasTec position peaked at $1.8M in Q3 2025.
911 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Oppenheimer & Co's 13F filing for Q2 2026, filed 3 Aug 2026.