Grantham, Mayo, Van Otterloo & Co (GMO)’s MasTec MTZ Stock Holding History

Grantham, Mayo, Van Otterloo & Co (GMO)’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	$352K	Buy	+847	New	+$324K	﹤0.01%	593
2024 Q2	–	Sell	-58,700	Closed	-$5.47M	–	564
2024 Q1	$5.47M	Buy	+58,700	New	+$4.46M	0.02%	301
2018 Q1	–	Sell	-11,600	Closed	-$568K	–	612
2017 Q4	$568K	Sell	11,600 -5,400	-32%	-$241K	﹤0.01%	447
2017 Q3	$789K	Sell	17,000 -11,100	-40%	-$483K	﹤0.01%	390
2017 Q2	$1.27M	Buy	28,100 +6,700	+31%	+$290K	0.01%	354
2017 Q1	$857K	Buy	+21,400	New	+$819K	﹤0.01%	375

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

Grantham, Mayo, Van Otterloo & Co (GMO)'s MTZ Position: Q2 2026 in Review

Grantham, Mayo, Van Otterloo & Co (GMO) opened a new position in MasTec (MTZ) in Q2 2026: 847 shares worth $352K. The stake represents ﹤0.01% of the portfolio and ranks #593 among its holdings. This is a return to the name: Grantham, Mayo, Van Otterloo & Co (GMO) previously reported a position in MTZ as recently as Q1 2024.

Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in MTZ in Q1 2017 and has held it in 6 quarters since. The position peaked at $5.47M in Q1 2024. 911 funds tracked by Wall St. Rank hold MTZ as of Q2 2026.

Grantham, Mayo, Van Otterloo & Co (GMO) held 847 shares of MasTec worth $352K as of Q2 2026.
MasTec was a new Grantham, Mayo, Van Otterloo & Co (GMO) position in Q2 2026.
MasTec made up ﹤0.01% of Grantham, Mayo, Van Otterloo & Co (GMO)'s portfolio in Q2 2026, its #593 holding.
Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in MasTec in Q1 2017 and has held it in 6 quarters since.
Grantham, Mayo, Van Otterloo & Co (GMO)'s MasTec position peaked at $5.47M in Q1 2024.
911 funds tracked by Wall St. Rank held MasTec as of Q2 2026.

Based on Grantham, Mayo, Van Otterloo & Co (GMO)'s 13F filing for Q2 2026, filed 13 Aug 2026.