MASTEC INC MTZ
COM · Common Stock · CUSIP 576323109 · ISIN US5763231090
Infrastructure and construction company
- SectorIndustrials
- IndustryWater, Sewer, Pipeline, Comm & Power Line Construction
- HeadquartersCoral Gables, FL
- Founded1994
- Websitemastec.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($15.3m this quarter). Holder counts are more reliable. Shares outstanding: 78.2m as of 2022-10-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $63.74. Options: 13 managers hold calls ($13.4m notional), 11 hold puts ($15.8m).
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $4.5m70.8k shares |
| CITADEL ADVISORS LLC | — | $3.2m49.8k shares |
| Caption Management, LLC | — | $1.6m25.0k shares |
| Walleye Trading LLC | — | $1.2m18.9k shares |
| JANE STREET GROUP, LLC | — | $718.0k11.3k shares |
| WOLVERINE TRADING, LLC | — | $708.0k10.8k shares |
| PEAK6 Investments LLC | — | $610.0k9.6k shares |
| HSBC HOLDINGS PLC | — | $344.0k5.3k shares |
| SIMPLEX TRADING, LLC | — | $336.0k5.3k shares |
| TWO SIGMA SECURITIES, LLC | — | $229.0k3.6k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $4.3m68.0k shares |
| CITADEL ADVISORS LLC | — | $3.9m61.5k shares |
| Walleye Trading LLC | — | $2.4m37.6k shares |
| PEAK6 Investments LLC | — | $2.4m37.5k shares |
| JANE STREET GROUP, LLC | — | $1.5m23.5k shares |
| SIMPLEX TRADING, LLC | — | $768.0k12.1k shares |
| WOLVERINE TRADING, LLC | — | $249.0k3.8k shares |
| HSBC HOLDINGS PLC | — | $175.0k2.7k shares |
| GROUP ONE TRADING LLC | — | $70.0k1.1k shares |
| Cutler Group LLC / CA | — | $4.0k300 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
MAS JORGE
13D · may seek influence
-0.2 pts · filed 2026-08-13
Stated purposeThe purpose of this filing to is report the entry by JM Holdings I on August 10, 2026 into an amendment (the "Fourth Amendment") to the previously reported prepaid variable forward sale contract entered into by JM Holdings I with an unaffiliated party (the "2019 Prepaid Forward Contract," and, as amended to date, the "Prepaid Forward Contract"). The Fourth Amendment amends the Floor Price (as defined below) and Cap Price (as defined below) for each Tranche 1 Component (as defined below), which were determined based on the volume weighted average price (the "VWAP") of MasTec, Inc.'s common stock for a specified period ended on August 11, 2026. The Prepaid Forward Contract provides for the settlement of the transaction, at the option of JM Holdings I, in cash or in Shares. At settlement JM … Full filing |
14.8% |
| BlackRock, Inc. 13G · institution +1.3 pts · filed 2026-07-29 | 8.1% |
MAS JOSE RAMON
13D · may seek influence
-0.1 pts · filed 2026-08-13
Stated purposeThe purpose of this filing to is report entry by Jose Ramon Mas on August 10, 2026 into an amendment (the "Fourth Amendment") to the previously reported prepaid variable forward sale contract entered into by Jose Ramon Mas with an unaffiliated party (the "JR 2019 Prepaid Forward Contract," and, as amended to date, the "Prepaid Forward Contract"). The Fourth Amendment amends the Floor Price (as defined below) and Cap Price (as defined below) for each Tranche 2 Component (as defined below), which were determined based on the volume weighted average price (the "VWAP") of MasTec, Inc.'s common stock for a specified period ended on August 11, 2026. The Prepaid Forward Contract provides for the settlement of the transaction, at the option of Jose Ramon Mas, in cash or in Shares. At settlement J… Full filing |
7.7% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales in Q3 2022
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported in Q3 2022.
Holders, Q3 2022
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 5.3m $338.8m | — |
| BlackRock Inc. 0.01% of their portfolio | 5.2m $330.8m | — |
| Allspring Global Investments Holdings, LLC 0.37% of their portfolio | 3.3m $210.0m | — |
| NORDEA INVESTMENT MANAGEMENT AB 0.35% of their portfolio | 3.2m $214.4m | — |
| DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio | 2.5m $157.4m | — |
| MACQUARIE GROUP LTD 0.18% of their portfolio | 2.4m $149.8m | — |
| Legacy Advisors, LLC 25.63% of their portfolio | 1.8m $116.1m | — |
| AMERIPRISE FINANCIAL INC 0.04% of their portfolio | 1.8m $115.6m | — |
| FRONTIER CAPITAL MANAGEMENT CO LLC 1.19% of their portfolio | 1.6m $101.3m | — |
| STATE STREET CORP 0.01% of their portfolio | 1.5m $96.9m | — |
| Invesco Ltd. 0.03% of their portfolio | 1.4m $90.7m | — |
| Electron Capital Partners, LLC 4.01% of their portfolio | 1.3m $83.8m | — |
| Hood River Capital Management LLC 2.56% of their portfolio | 1.1m $67.1m | — |
| PZENA INVESTMENT MANAGEMENT LLC 0.28% of their portfolio | 898.8k $57.1m | — |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 748.8k $47.5m | — |
| MARSHALL WACE, LLP 0.11% of their portfolio | 692.0k $43.9m | — |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 666.4k $42.3m | — |
| Handelsbanken Fonder AB 0.27% of their portfolio | 643.5k $40.9m | — |
| Point72 Asset Management, L.P. 0.17% of their portfolio | 602.9k $38.3m | — |
| Bank of New York Mellon Corp 0.01% of their portfolio | 541.8k $34.4m | — |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 538.7k $34.2m | — |
| Candriam S.C.A. 0.24% of their portfolio | 533.3k $33.9m | — |
| NORGES BANK 0.01% of their portfolio | 470.4k $29.9m | — |
| NORTHERN TRUST CORP 0.01% of their portfolio | 467.0k $29.7m | — |
| CREDIT SUISSE AG/ 0.03% of their portfolio | 455.2k $28.9m | — |
| Alyeska Investment Group, L.P. 0.32% of their portfolio | 434.8k $27.6m | — |
| M.D. Sass, LLC 5.05% of their portfolio | 433.4k $27.5m | — |
| FMR LLC 0.00% of their portfolio | 430.9k $27.4m | — |
| DekaBank Deutsche Girozentrale 0.08% of their portfolio | 423.1k $27.5m | — |
| DNB Asset Management AS 0.18% of their portfolio | 376.1k $23.9m | — |
| MORGAN STANLEY 0.00% of their portfolio | 374.4k $23.8m | — |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 358.5k $22.8m | — |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.49% of their portfolio | 357.3k $22.7m | — |
| Orbis Allan Gray Ltd 0.17% of their portfolio | 328.3k $20.9m | — |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 322.6k $20.5m | — |
| Swedbank AB 0.05% of their portfolio | 319.5k $20.3m | — |
| Mirae Asset Global Investments Co., Ltd. 0.05% of their portfolio | 310.9k $19.7m | — |
| ACK Asset Management LLC 5.13% of their portfolio | 305.0k $19.4m | — |
| EDMOND DE ROTHSCHILD HOLDING S.A. 0.51% of their portfolio | 302.2k $19.2m | — |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 290.0k $18.4m | — |
| COUNTRY TRUST BANK 0.55% of their portfolio | 274.8k $17.4m | — |
| ExodusPoint Capital Management, LP 0.24% of their portfolio | 266.2k $16.9m | — |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 242.4k $15.4m | — |
| Vontobel Holding Ltd. 0.18% of their portfolio | 238.5k $15.6m | — |
| BRUNI J V & CO /CO 2.37% of their portfolio | 238.2k $15.1m | — |
| Bragg Financial Advisors, Inc 1.01% of their portfolio | 231.6k $14.7m | — |
| Lombard Odier Asset Management (Europe) Ltd 0.74% of their portfolio | 225.5k $14.3m | — |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 223.0k $14.2m | — |
| GLENMEDE TRUST CO NA 0.08% of their portfolio | 200.6k $12.7m | — |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 200.3k $12.7m | — |
| Verition Fund Management LLC 0.09% of their portfolio | 198.8k $12.6m | — |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 198.6k $12.6m | — |
| Daiwa Securities Group Inc. 0.10% of their portfolio | 192.0k $12.2m | — |
| AGF INVESTMENTS INC. 0.11% of their portfolio | 183.0k $11.6m | — |
| TRUIST FINANCIAL CORP 0.02% of their portfolio | 182.7k $11.6m | — |
| Handelsinvest Investeringsforvaltning 1.79% of their portfolio | 179.5k $11.4m | — |
| KIRR MARBACH & CO LLC /IN/ 3.83% of their portfolio | 178.1k $11.3m | — |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 175.5k $11.1m | — |
| Retirement Systems of Alabama 0.05% of their portfolio | 167.9k $10.7m | — |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 141.0k $9.0m | — |
| California Public Employees Retirement System 0.01% of their portfolio | 138.2k $8.8m | — |
| Swiss National Bank 0.01% of their portfolio | 135.1k $8.6m | — |
| MUHLENKAMP & CO INC 3.64% of their portfolio | 128.3k $8.2m | — |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 125.2k $8.0m | — |
| SEI INVESTMENTS CO 0.02% of their portfolio | 124.4k $7.9m | — |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 117.5k $7.5m | — |
| CapWealth Advisors, LLC 0.95% of their portfolio | 112.8k $7.2m | — |
| COMMUNITY TRUST & INVESTMENT CO 0.67% of their portfolio | 111.2k $7.1m | — |
| Carmignac Gestion 0.14% of their portfolio | 105.2k $6.7m | — |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 105.1k $6.7m | — |
| Rockefeller Capital Management L.P. 0.03% of their portfolio | 93.9k $6.0m | — |
| Pier Capital, LLC 1.02% of their portfolio | 93.4k $5.9m | — |
| AMERICAN INTERNATIONAL GROUP, INC. 0.04% of their portfolio | 90.2k $5.7m | — |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 88.4k $5.6m | — |
| Man Group plc 0.03% of their portfolio | 86.9k $5.5m | — |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.03% of their portfolio | 86.8k $5.5m | — |
| Cubist Systematic Strategies, LLC 0.04% of their portfolio | 86.3k $5.5m | — |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 85.7k $5.4m | — |
| Legal & General Group Plc 0.00% of their portfolio | 83.5k $5.3m | — |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 81.2k $5.2m | — |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 73.0k $4.6m | — |
| First Washington CORP 2.34% of their portfolio | 73.0k $4.6m | — |
| Smith, Graham & Co., Investment Advisors, LP 0.61% of their portfolio | 72.7k $4.6m | — |
| Lighthouse Investment Partners, LLC 1.85% of their portfolio | 72.5k $4.6m | — |
| UBS Group AG 0.00% of their portfolio | 70.7k $4.5m | — |
| Lombard Odier Asset Management (Switzerland) SA 0.36% of their portfolio | 67.6k $4.3m | — |
| WILBANKS SMITH & THOMAS ASSET MANAGEMENT LLC 0.16% of their portfolio | 58.9k $3.7m | — |
| LGT Group Foundation 0.14% of their portfolio | 58.0k $3.7m | — |
| South Dakota Investment Council 0.09% of their portfolio | 57.8k $3.7m | — |
| FIRST NATIONAL BANK OF OMAHA 0.24% of their portfolio | 57.6k $3.7m | — |
| Asset Management One Co., Ltd. 0.02% of their portfolio | 55.9k $3.5m | — |
| Bellecapital International Ltd. 1.07% of their portfolio | 55.4k $3.5m | — |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.01% of their portfolio | 53.7k $3.4m | — |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 53.5k $3.4m | — |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 52.1k $3.3m | — |
| US BANCORP \DE\ 0.01% of their portfolio | 52.0k $3.3m | — |
| Mariner, LLC 0.01% of their portfolio | 50.7k $3.2m | — |
| Yaupon Capital Management LP 1.07% of their portfolio | 50.3k $3.2m | — |
| Profit Investment Management, LLC 2.41% of their portfolio | 49.5k $3.1m | — |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC 0.02% of their portfolio | 48.8k $3.1m | — |