PEAK6 LLC

SEC CIK: 0001389958
Latest filing: Aug 12, 2026

SEC filings (opens in a new tab)

MTZ holding history

Mastec Inc in every 13F filed by PEAK6 LLC, 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): 3,744
Value: $1.56M
% of portfolio: <0.1%
Quarters held: 4; Since Q3 2025

Holdings of MTZ by PEAK6 LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	3,744	$1.56M	<0.1%	+368+10.9%	Added	Holders
Q1 2026	3,376	$1.09M	<0.1%	−25,841−88.4%	Reduced	Holders
Q4 2025	29,217	$6.35M	0.2%	+27,983+2,267.7%	Added	Holders
Q3 2025	1,234	$262.6K	<0.1%	+1,234	New	Holders