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Rossby Financial’s MasTec MTZ Stock Holding History

Rossby Financial’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 		$122K Sell
364
-2,577
-88% -$698K 0.02% 494
2025
Q4 		$639K Buy
2,941
+191
+7% +$40.1K 0.2% 91
2025
Q3 		$591K Buy
+2,750
New +$504K 0.19% 99

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

Rossby Financial's MTZ Position: Q1 2026 in Review

Rossby Financial reduced its MasTec (MTZ) stake by 88% in Q1 2026, selling an estimated $698K and leaving 364 shares worth $122K. The position accounts for 0.02% of the portfolio, ranked #494.

Rossby Financial first reported a position in MTZ in Q3 2025 and has held it in 3 quarters since. The position peaked at $639K in Q4 2025. 805 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.

  • Rossby Financial held 364 shares of MasTec worth $122K as of Q1 2026.
  • Rossby Financial sold 2,577 MasTec shares in Q1 2026, an estimated $698K.
  • MasTec made up 0.02% of Rossby Financial's portfolio in Q1 2026, its #494 holding.
  • Rossby Financial first reported a position in MasTec in Q3 2025 and has held it in 3 quarters since.
  • Rossby Financial's MasTec position peaked at $639K in Q4 2025.
  • 805 funds tracked by Wall St. Rank held MasTec as of Q1 2026.

Based on Rossby Financial's 13F filing for Q1 2026, filed 11 May 2026.