Marshall Wace, LLP

SEC CIK: 0001318757
Latest filing: Aug 13, 2026

SEC filings (opens in a new tab)

MTZ holding history

Mastec Inc in every 13F filed by Marshall Wace, LLP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MTZ overview All 13F holders of MTZ Full Q2 2026 holdings

Shares (Q2 2026): 0; Sold out in Q2 2026
Value: $0
% of portfolio: 0.0%
Quarters held: 19; Since Q1 2021

Holdings of MTZ by Marshall Wace, LLP, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	0	$0	0.0%	−852−100.0%	Sold out	Holders
Q1 2026	852	$274.1K	<0.1%	−101,551−99.2%	Reduced	Holders
Q4 2025	102,403	$22.3M	<0.1%	+102,403	New	Holders
Q3 2025	0	$0	0.0%	−79,456−100.0%	Sold out	Holders
Q2 2025	79,456	$13.5M	<0.1%	−188,598−70.4%	Reduced	Holders
Q1 2025	268,054	$31.3M	<0.1%	+228,569+578.9%	Added	Holders
Q4 2024	39,485	$5.38M	<0.1%	−461,006−92.1%	Reduced	Holders
Q3 2024	500,491	$61.6M	0.1%	−217,595−30.3%	Reduced	Holders
Q2 2024	718,086	$76.8M	0.1%	+29,631+4.3%	Added	Holders
Q1 2024	688,455	$64.2M	0.1%	−97,280−12.4%	Reduced	Holders
Q4 2023	785,735	$59.5M	0.1%	−4,162−0.5%	Reduced	Holders
Q3 2023	789,897	$56.8M	0.1%	+326,716+70.5%	Added	Holders
Q2 2023	463,181	$54.6M	0.1%	−56,618−10.9%	Reduced	Holders
Q1 2023	519,799	$49.1M	0.1%	−18,267−3.4%	Reduced	Holders
Q4 2022	538,066	$45.9M	0.1%	−153,893−22.2%	Reduced	Holders
Q3 2022	691,959	$43.9M	0.1%	−170,019−19.7%	Reduced	Holders
Q2 2022	861,978	$61.8M	0.1%	+250,783+41.0%	Added	Holders
Q1 2022	611,195	$53.2M	0.1%	+333,910+120.4%	Added	Holders
Q4 2021	277,285	$25.6M	0.1%	+277,285	New	Holders
Q3 2021	0	$0	0.0%	−25,103−100.0%	Sold out	Holders
Q2 2021	25,103	$2.66M	<0.1%	+10,014+66.4%	Added	Holders
Q1 2021	15,089	$1.41M	<0.1%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.