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MasTec Ownership | Who Owns MasTec?

OverviewForecastRevenueFinancialsChartTranscripts

MasTec Ownership Summary

MasTec is owned by 76.83% institutional investors, 21.16% insiders, and 2.01% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 9.80% of MTZ shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 2.64% of its assets in MasTec shares.

MTZ Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockMasTec76.83%21.16%2.01%
SectorIndustrials Stocks 67.86%16.45%15.69%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de7.64M9.80%$3.18B
Vanguard group5.93M7.64%$1.29B
Blackrock5.84M7.49%$624.79M
Peconic partners3.68M4.72%$1.53B
Vanguard capital management2.83M3.63%$1.18B
State street2.24M2.88%$933.96M
Hill city capital, lp2.15M2.76%$896.61M
Lone pine capital1.35M1.73%$559.67M
Bank of america corp /de/1.34M1.71%$555.82M
First trust advisors lp1.33M1.70%$552.69M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Hill city capital, lp2.15M22.90%$896.61M
Hillman130.91K19.27%$54.47M
Peconic partners3.68M19.02%$1.53B
Goodlander investment management105.00K13.19%$43.69M
Electron capital partners620.19K10.30%$258.04M
Kirr marbach & co llc /in/133.73K9.37%$55.64M
140 summer partners lp268.17K7.97%$111.57M
Newbrook capital advisors lp134.43K7.55%$55.93M
Webs creek capital management lp70.08K5.52%$29.16M
Thorntree capital partners lp87.83K5.00%$36.54M

Top Buyers

HolderShares% AssetsChange
Jpmorgan chase1.32M0.03%1.12M
T. rowe price investment management593.72K0.16%593.72K
Sixth street partners management company551.32K0.03%551.32K
Ameriprise financial734.98K0.06%503.18K
State street2.24M0.03%374.98K

Top Sellers

HolderShares% AssetsChange
D1 capital partners---664.83K
Millennium management43.90K0.01%-459.30K
Victory capital management1.21M0.28%-382.44K
Cartenna capital, lp---300.00K
Citadel advisors---279.78K

New Positions

HolderShares% AssetsChangeValue
Sixth street partners management company551.32K0.03%551.32K$229.38M
Clearbridge investments218.59K0.08%218.59K$90.95M
Maplelane capital88.80K0.67%88.80K$36.95M
Zimmer partners, lp85.00K0.81%85.00K$35.37M
Norges bank55.57K0.00%55.57K$23.12M

Sold Out

HolderChange
Wealth watch advisors-1.00
New millennium group-2.00
Frazier financial advisors-2.00
Stephens consulting-2.00
Tortoise investment management-2.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 202693812.34%59,892,2623.21%761.38%51315.80%29412.64%
Mar 31, 202680312.31%56,208,883-4.21%721.27%42216.57%25612.28%
Dec 31, 2025270-59.70%11,719,627-79.46%150.28%130-61.76%78-65.02%
Sep 30, 2025302-50.81%13,255,656-76.27%160.33%158-50.93%95-48.92%
Jun 30, 202560811.36%55,769,826-0.56%711.39%31911.15%18617.72%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
iShares Core S&P Mid-Cap ETF2.12M2.64%65.00
Vanguard Morn Total Stk Mkt Idx Investor2.01M2.54%-2.81K
Vanguard Total Stock Mkt Idx Inv2.01M2.54%-2.81K
Vanguard US Total Market Shares ETF1.99M2.52%-42.56K
Vanguard MStar Total Stk Mkt Idx Invest2.01M2.51%5.84K
Pacer US Cash Cows 100 ETF1.66M2.09%2.44K
Vanguard Small Cap Index1.45M1.81%2.61K
First Trust RBA Amer Indl RenaisTM ETF1.16M1.46%-670.00
Vanguard Small Cap Growth Index Inv837.16K1.06%19.65K
Vanguard Morn Small Cap Growth Index Inv837.16K1.06%19.65K

Recent Insider Transactions

DateNameRoleActivityValue
Jun 03, 2026Csiszar Ernst N-Sell$2.41M
May 04, 2026Campbell C Robert-Sell$1.25M
Mar 25, 2026Palomarez Javier Alberto-Sell$309.16K
Mar 03, 2026Csiszar Ernst N-Sell$1.95M
Nov 03, 2025Love Timothy Michael CAOSell$397.66K

Insider Transactions Trends

DateBuySell
2026 Q3--
2026 Q2-2
2026 Q1-2
2025 Q4-1
2025 Q3-7

MTZ Ownership FAQ

Who owns the most shares of MasTec?

MasTec’s largest shareholders are Blackrock funding, inc. /de (7.64M shares, 9.80%), Vanguard group (5.93M shares, 7.64%), and Blackrock (5.84M shares, 7.49%). Together, they hold 24.93% of MasTec’s total shares outstanding.

Does Blackrock own MasTec?

Yes, BlackRock owns 7.49% of MasTec, totaling 5.84M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 624.79M$. In the last quarter, BlackRock increased its holdings by 294.93K shares, a 5.32% change.

Who is MasTec’s biggest shareholder by percentage of total assets invested?

Hill city capital, lp is MasTec’s biggest shareholder by percentage of total assets invested, with 22.90% of its assets in 2.16M MasTec shares, valued at 896.61M$.

Who is the top mutual fund holder of MasTec shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of MasTec shares, with 2.64% of its total shares outstanding invested in 2.12M MasTec shares.

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