Latest Period
Q1 2026
Security Snapshot
MASTEC INC - Common Stock (MTZ) Institutional Ownership
CUSIP: 576323109
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
796
Shares (Excl. Options)
57,965,604
Price
$321.74
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- Security type / class
- Equity / Common Stock
- Symbol
- MTZ on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 57,965,604
- Total 13F value
- $18,622,019,535
- Portfolio coverage rank
- 0.03%
- Share change
- -914,282
- Value change
- -$119,327,330
- Number of holders
- 796
- Shares outstanding
- 79,148,207
- SEC-reported price per share
- $423.79
- Insider filing price
- $423.79
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MTZ - MASTEC INC - Common Stock is tracked under CUSIP 576323109.
- 796 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 691 to 796 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $12,762,681,797 to $18,622,019,535.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 796 institutions filings for Q1 2026.
Security key
576323109
Latest holder period
Q1 2026
13F holders
796
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
MTZ full holder history
MASTEC INC SEC filings
MASTEC INC company facts
MASTEC INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 576323109:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
MTZ
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| MAS JORGE | 15% | $2,234,710,041 | 11,872,231 | Jorge Mas | 21 Aug 2025 | |||
| MAS JOSE RAMON | 7.8% | $1,164,555,858 | 6,186,877 | Jose Ramon Mas | 21 Aug 2025 | |||
| BlackRock, Inc. | 6.8% | -27% | $690,019,947 | -$239,294,887 | 5,415,319 | -26% | BlackRock, Inc. | 31 Mar 2025 |
| NORDEA INVESTMENT MANAGEMENT AB | 2.5% | $253,025,284 | 1,985,758 | NORDEA INVESTMENT MANAGEMENT AB | 30 Sep 2024 |
As of 31 Mar 2026, 796 institutional investors reported holding 57,965,604 shares of MASTEC INC - Common Stock (MTZ). This represents 73% of the company’s total 79,148,207 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
48%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.2% | 7,309,609 | +2.8% | 0.04% | $2,351,793,580 |
| PECONIC PARTNERS LLC | 4.5% | 3,578,431 | +124% | 20% | $1,151,324,390 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.5% | 2,804,295 | 0% | 0.02% | $902,253,873 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.5% | 2,770,038 | 0% | 0.05% | $891,232,026 |
| Hill City Capital, LP | 2.7% | 2,155,000 | 0% | 25% | $693,349,700 |
| STATE STREET CORP | 2.4% | 1,869,788 | +2.4% | 0.02% | $601,585,591 |
| VICTORY CAPITAL MANAGEMENT INC | 2% | 1,592,523 | -40% | 0.33% | $512,381,476 |
| LONE PINE CAPITAL LLC | 1.9% | 1,531,050 | 3.9% | $492,600,027 | |
| FIRST TRUST ADVISORS LP | 1.8% | 1,411,584 | +7.6% | 0.32% | $454,162,810 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.7% | 1,371,909 | +12% | 0.03% | $441,485,062 |
| BANK OF AMERICA CORP /DE/ | 1.7% | 1,330,066 | +6% | 0.03% | $427,935,435 |
| Hood River Capital Management LLC | 1.6% | 1,295,385 | -13% | 4.2% | $416,777,170 |
| Invesco Ltd. | 1.5% | 1,225,757 | -19% | 0.06% | $394,375,016 |
| NORDEA INVESTMENT MANAGEMENT AB | 0.93% | 733,628 | -36% | 0.21% | $228,752,547 |
| DIMENSIONAL FUND ADVISORS LP | 0.92% | 731,650 | -16% | 0.05% | $235,328,292 |
| Electron Capital Partners, LLC | 0.9% | 713,013 | -11% | 11% | $229,404,803 |
| AQR CAPITAL MANAGEMENT LLC | 0.83% | 660,054 | -9.7% | 0.1% | $209,540,584 |
| Bank of New York Mellon Corp | 0.83% | 656,104 | +3.1% | 0.04% | $211,094,792 |
| CANADA PENSION PLAN INVESTMENT BOARD | 0.81% | 638,964 | +326% | 0.13% | $205,580,277 |
| FMR LLC | 0.79% | 627,901 | -5.5% | 0.01% | $202,021,017 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.76% | 604,677 | +8.4% | 0.26% | $194,535,836 |
| MORGAN STANLEY | 0.74% | 586,743 | +20% | 0.01% | $188,779,181 |
| COATUE MANAGEMENT LLC | 0.74% | 583,597 | -14% | 0.65% | $187,766,498 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.65% | 511,243 | +1.8% | 0.03% | $164,487,323 |
| MILLENNIUM MANAGEMENT LLC | 0.64% | 503,199 | -31% | 0.12% | $161,899,246 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 57,965,604 | $18,622,019,535 | -$119,327,330 | $321.74 | 796 |
| 2025 Q4 | 58,697,736 | $12,762,681,797 | +$239,499,498 | $217.37 | 691 |
| 2025 Q3 | 57,040,453 | $12,131,237,112 | +$207,584,114 | $212.81 | 646 |
| 2025 Q2 | 55,709,511 | $9,492,509,064 | +$72,107,272 | $170.43 | 584 |
| 2025 Q1 | 56,298,048 | $6,558,267,396 | -$175,476,772 | $116.71 | 517 |
| 2024 Q4 | 57,468,980 | $7,823,296,055 | -$72,107,458 | $136.14 | 526 |
| 2024 Q3 | 57,521,402 | $7,083,783,978 | -$233,909,917 | $123.10 | 465 |
| 2024 Q2 | 60,736,753 | $6,505,984,087 | -$34,667,836 | $106.99 | 425 |
| 2024 Q1 | 59,054,198 | $5,508,783,907 | -$196,180,643 | $93.25 | 380 |
| 2023 Q4 | 61,616,342 | $4,662,422,973 | +$341,790,988 | $75.72 | 364 |
| 2023 Q3 | 57,060,392 | $4,108,558,281 | -$155,900,559 | $71.97 | 370 |
| 2023 Q2 | 58,106,169 | $6,845,394,728 | -$3,888,225 | $117.97 | 387 |
| 2023 Q1 | 58,162,760 | $5,486,202,780 | +$3,406,465 | $94.44 | 389 |
| 2022 Q4 | 58,284,819 | $4,968,529,088 | +$233,779,101 | $85.33 | 381 |
| 2022 Q3 | 55,449,459 | $3,533,898,388 | +$49,733,326 | $63.50 | 326 |
| 2022 Q2 | 54,578,478 | $3,906,772,476 | +$29,243,614 | $71.66 | 341 |
| 2022 Q1 | 54,030,910 | $4,701,392,915 | +$191,151,852 | $87.10 | 372 |
| 2021 Q4 | 51,733,419 | $4,773,079,881 | -$299,775,166 | $92.28 | 380 |
| 2021 Q3 | 52,428,792 | $4,529,865,458 | -$187,781,134 | $86.28 | 359 |
| 2021 Q2 | 54,393,750 | $5,768,561,882 | -$514,144,747 | $106.10 | 406 |
| 2021 Q1 | 59,605,667 | $5,579,612,489 | -$122,997,747 | $93.70 | 383 |
| 2020 Q4 | 61,508,935 | $4,194,153,003 | +$25,397,014 | $68.18 | 342 |
| 2020 Q3 | 61,685,831 | $2,605,917,662 | -$121,768,900 | $42.20 | 313 |
| 2020 Q2 | 64,563,061 | $2,893,777,771 | +$201,580,984 | $44.87 | 310 |
| 2020 Q1 | 60,398,966 | $1,974,800,787 | -$210,684,261 | $32.73 | 304 |