Westfield Capital Management
MTZ icon

Westfield Capital Management’s MasTec MTZ Stock Holding History

Westfield Capital Management’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 		$80.4M Buy
+249,980
New +$67.7M 0.34% 98
2018
Q4 		– Sell
-532,659
Closed -$23.8M – 258
2018
Q3 		$23.8M Sell
532,659
-238,010
-31% -$11M 0.17% 170
2018
Q2 		$39.1M Buy
770,669
+290,379
+60% +$14M 0.29% 112
2018
Q1 		$22.6M Sell
480,290
-351,385
-42% -$17.8M 0.17% 168
2017
Q4 		$40.7M Buy
831,675
+455,660
+121% +$20.3M 0.31% 121
2017
Q3 		$17.4M Buy
376,015
+108,600
+41% +$4.73M 0.13% 193
2017
Q2 		$12.1M Buy
+267,415
New +$11.6M 0.1% 193
2017
Q1 		– Sell
-291,906
Closed -$11.2M – 288
2016
Q4 		$11.2M Sell
291,906
-457,020
-61% -$15.5M 0.1% 208
2016
Q3 		$22.3M Buy
748,926
+255,175
+52% +$7M 0.18% 164
2016
Q2 		$11M Sell
493,751
-48,139
-9% -$1.07M 0.09% 197
2016
Q1 		$11M Buy
+541,890
New +$8.87M 0.08% 193
2014
Q2 		– Sell
-1,213,119
Closed -$52.7M – 338
2014
Q1 		$52.7M Buy
+1,213,119
New +$46M 0.32% 109

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

Westfield Capital Management's MTZ Position: Q1 2026 in Review

Westfield Capital Management opened a new position in MasTec (MTZ) in Q1 2026: 249,980 shares worth $80.4M. The stake represents 0.34% of the portfolio and ranks #98 among its holdings. This is a return to the name: Westfield Capital Management previously reported a position in MTZ as recently as Q3 2018.

Westfield Capital Management first reported a position in MTZ in Q1 2014 and has held it in 12 quarters since. 805 funds tracked by Wall St. Rank hold MTZ as of Q1 2026.

  • Westfield Capital Management held 249,980 shares of MasTec worth $80.4M as of Q1 2026.
  • MasTec was a new Westfield Capital Management position in Q1 2026.
  • MasTec made up 0.34% of Westfield Capital Management's portfolio in Q1 2026, its #98 holding.
  • Westfield Capital Management first reported a position in MasTec in Q1 2014 and has held it in 12 quarters since.
  • 805 funds tracked by Wall St. Rank held MasTec as of Q1 2026.

Based on Westfield Capital Management's 13F filing for Q1 2026, filed 11 May 2026.