MasTec Ownership | Who Owns MasTec?
MasTec Ownership Summary
MasTec is owned by 15.08% institutional investors, 21.49% insiders, and 63.43% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 9.15% of MTZ shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 2.58% of its assets in MasTec shares.
MTZ Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | MasTec | 15.08% | 21.49% | 63.43% |
| Sector | Industrials Stocks | 47.66% | 12.56% | 39.78% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 7.11M | 9.15% | $1.55B |
| Vanguard group | 5.93M | 7.64% | $1.29B |
| Blackrock | 5.84M | 7.49% | $624.79M |
| Hill city capital, lp | 2.15M | 2.76% | $458.61M |
| State street | 1.84M | 2.35% | $390.96M |
| Invesco | 1.66M | 2.13% | $354.20M |
| Hood river capital management | 1.65M | 2.11% | $350.38M |
| Millennium management | 1.46M | 1.87% | $198.81M |
| Geode capital management | 1.22M | 1.57% | $265.40M |
| Nordea investment management ab | 1.15M | 1.48% | $252.13M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Hill city capital, lp | 2.15M | 19.39% | $458.61M |
| Hillman | 144.69K | 18.10% | $46.55M |
| Goodlander investment management | 181.00K | 14.69% | $38.52M |
| Kirr marbach & co llc /in/ | 160.20K | 9.39% | $51.54M |
| Legacy advisors | 380.71K | 8.89% | $82.75M |
| Electron capital partners | 819.09K | 7.90% | $174.31M |
| 140 summer partners lp | 383.04K | 7.08% | $81.51M |
| Forest avenue capital management lp | 421.87K | 6.62% | $89.78M |
| Muhlenkamp | 105.76K | 6.18% | $22.99M |
| Decade renewable partners lp | 70.33K | 4.68% | $9.58M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Victory capital management | 946.55K | 0.12% | 936.75K |
| Peconic partners | 750.00K | 4.41% | 750.00K |
| Third point | 725.00K | 1.72% | 725.00K |
| Fmr | 465.60K | 0.01% | 460.54K |
| Forest avenue capital management lp | 421.87K | 6.62% | 421.87K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| D1 capital partners | - | - | -664.83K |
| Blackrock funding, inc. /de | 7.11M | 0.03% | -632.11K |
| Macquarie group | - | - | -615.97K |
| Cooper creek partners management | 120.57K | 0.79% | -303.35K |
| Cartenna capital, lp | - | - | -300.00K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Peconic partners | 750.00K | 4.41% | 750.00K | $159.61M |
| Third point | 725.00K | 1.72% | 725.00K | $154.29M |
| Forest avenue capital management lp | 421.87K | 6.62% | 421.87K | $89.78M |
| 140 summer partners lp | 383.04K | 7.08% | 383.04K | $81.51M |
| Bowen hanes | 195.44K | 1.07% | 195.44K | $42.48M |
Sold Out
| Holder | Change |
|---|---|
| Tortoise investment management | -2.00 |
| Stephens consulting | -2.00 |
| New millennium group | -2.00 |
| Advisornet financial | -2.00 |
| Greenline partners | -3.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 270 | -59.70% | 11,719,627 | -79.46% | 15 | 0.28% | 130 | -61.76% | 78 | -65.02% |
| Sep 30, 2025 | 302 | -50.81% | 13,255,656 | -76.27% | 16 | 0.33% | 158 | -50.93% | 95 | -48.92% |
| Jun 30, 2025 | 608 | 11.36% | 55,769,826 | -0.56% | 71 | 1.39% | 319 | 11.15% | 186 | 17.72% |
| Mar 31, 2025 | 545 | -1.80% | 56,221,407 | -2.28% | 71 | 1.32% | 286 | -5.30% | 158 | 0.64% |
| Dec 31, 2024 | 508 | 2.42% | 55,033,010 | -4.52% | 70 | 1.29% | 274 | 15.61% | 147 | - |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 2.03M | 2.58% | 3.13K |
| Vanguard Total Stock Mkt Idx Inv | 2.00M | 2.54% | 8.20K |
| Vanguard US Total Market Shares ETF | 1.99M | 2.52% | -42.56K |
| Pacer US Cash Cows 100 ETF | 1.66M | 2.09% | 2.44K |
| Vanguard Small Cap Index | 1.46M | 1.85% | 23.53K |
| First Trust RBA Amer Indl RenaisTM ETF | 1.21M | 1.53% | 6.40K |
| Vanguard Small Cap Growth Index Inv | 815.68K | 1.03% | 20.00K |
| Hood River Small-Cap Growth Instl | 811.18K | 1.03% | 811.18K |
| Delaware Small Cap Value A | 707.93K | 0.89% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 685.40K | 0.87% | 17.29K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 25, 2026 | Palomarez Javier Alberto | - | Sell | $309.16K |
| Mar 03, 2026 | Csiszar Ernst N | - | Sell | $1.95M |
| Nov 03, 2025 | Love Timothy Michael | CAO | Sell | $397.66K |
| Sep 29, 2025 | Campbell C Robert | - | Sell | $420.78K |
| Sep 18, 2025 | Apple Robert E | COO | Sell | $20.11K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 2 |
| 2025 Q4 | - | 1 |
| 2025 Q3 | - | 7 |
| 2025 Q2 | - | 2 |
| 2025 Q1 | - | 1 |
MTZ Ownership FAQ
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