PEAK6
MTZ icon

PEAK6’s MasTec MTZ Stock Holding History

PEAK6’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 		$3.22M Sell
10,000
-70,000
-88% -$19M 0.01% 1115
2025
Q4 		$17.4M Buy
80,000
+77,000
+2,567% +$16.2M 0.03% 421
2025
Q3 		$638K Buy
3,000
+700
+30% +$128K ﹤0.01% 2045
2025
Q2 		$392K Sell
2,300
-2,500
-52% -$360K ﹤0.01% 2221
2025
Q1 		$560K Sell
4,800
-8,700
-64% -$1.17M ﹤0.01% 2038
2024
Q4 		$1.84M Buy
+13,500
New +$1.81M ﹤0.01% 1475

Other funds holding MTZ

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
PP
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Victory Capital Management
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
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

PEAK6's MTZ Position: Q1 2026 in Review

PEAK6 reduced its MasTec (MTZ) stake by 88% in Q1 2026, selling an estimated $7M and leaving 3,376 shares worth $1.09M. The position accounts for ﹤0.01% of the portfolio, ranked #1658.

PEAK6 first reported a position in MTZ in Q3 2025 and has held it in 3 quarters since. The position peaked at $6.35M in Q4 2025. 805 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.

  • PEAK6 held 3,376 shares of MasTec worth $1.09M as of Q1 2026.
  • PEAK6 sold 25,841 MasTec shares in Q1 2026, an estimated $7M.
  • MasTec made up ﹤0.01% of PEAK6's portfolio in Q1 2026, its #1658 holding.
  • PEAK6 first reported a position in MasTec in Q3 2025 and has held it in 3 quarters since.
  • PEAK6's MasTec position peaked at $6.35M in Q4 2025.
  • 805 funds tracked by Wall St. Rank held MasTec as of Q1 2026.

Based on PEAK6's 13F filing for Q1 2026, filed 14 May 2026.