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 ($10.8m 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 ≈ $85.25. Options: 13 managers hold calls ($19.8m notional), 14 hold puts ($30.2m).
Trends to Q4 2022
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 338 |
| Q4 2022 | 387 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $13.4m | $15.8m | 1.17 |
| Q4 2022 | $19.8m | $30.2m | 1.53 |
Biggest buyers
| VANGUARD GROUP INC | Added | +659.5k |
| BlackRock Inc. | Added | +656.7k |
| WELLINGTON MANAGEMENT GROUP LLP | New | +475.2k |
| JPMORGAN CHASE & CO | Added | +402.6k |
| LORD, ABBETT & CO. LLC | New | +352.5k |
| Hill City Capital, LP | New | +350.0k |
| Electron Capital Partners, LLC | Added | +255.0k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Added | +247.2k |
| PECONIC PARTNERS LLC | New | +234.3k |
| COOPER CREEK PARTNERS MANAGEMENT LLC | Added | +188.9k |
Biggest sellers
| Alyeska Investment Group, L.P. | Reduced | -430.9k |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | -400.3k |
| ExodusPoint Capital Management, LP | Sold out | -266.2k |
| Legacy Advisors, LLC | Reduced | -241.1k |
| Point72 Asset Management, L.P. | Reduced | -223.7k |
| GLENMEDE TRUST CO NA | Sold out | -200.6k |
| Verition Fund Management LLC | Sold out | -198.8k |
| Handelsbanken Fonder AB | Reduced | -187.0k |
| MARSHALL WACE, LLP | Reduced | -153.9k |
| NORDEA INVESTMENT MANAGEMENT AB | Reduced | -147.9k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $6.1m71.6k shares |
| CITADEL ADVISORS LLC | Added | $5.9m68.6k shares |
| Walleye Trading LLC | Added | $2.2m26.2k shares |
| PEAK6 Investments LLC | Added | $1.4m16.9k shares |
| JANE STREET GROUP, LLC | Added | $1.1m12.7k shares |
| SIMPLEX TRADING, LLC | Added | $964.0k11.3k shares |
| WOLVERINE TRADING, LLC | Reduced | $802.0k9.4k shares |
| HSBC HOLDINGS PLC | Unchanged | $447.4k5.3k shares |
| Walleye Capital LLC | New | $315.7k3.7k shares |
| TWO SIGMA SECURITIES, LLC | Reduced | $298.7k3.5k shares |
Biggest puts
| Caption Management, LLC | New | $6.2m72.7k shares |
| CITADEL ADVISORS LLC | Added | $5.8m68.4k shares |
| Walleye Trading LLC | Added | $3.4m39.9k shares |
| SIMPLEX TRADING, LLC | Added | $3.0m35.3k shares |
| SCOPUS ASSET MANAGEMENT, L.P. | New | $2.6m30.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.5m29.6k shares |
| GROUP ONE TRADING LLC | Added | $2.0m23.6k shares |
| JANE STREET GROUP, LLC | Reduced | $2.0m22.9k shares |
| Walleye Capital LLC | New | $1.2m14.3k shares |
| PEAK6 Investments LLC | Reduced | $512.0k6.0k 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 Q4 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 Q4 2022.
Holders, Q4 2022
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 6.0m $511.6m | Added +659.5k |
| BlackRock Inc. 0.02% of their portfolio | 5.9m $500.6m | Added +656.7k |
| Allspring Global Investments Holdings, LLC 0.48% of their portfolio | 3.3m $282.5m | Added +3.9k |
| NORDEA INVESTMENT MANAGEMENT AB 0.40% of their portfolio | 3.1m $256.7m | Reduced -147.9k |
| DIMENSIONAL FUND ADVISORS LP 0.07% of their portfolio | 2.4m $201.7m | Reduced -113.9k |
| MACQUARIE GROUP LTD 0.23% of their portfolio | 2.3m $192.9m | Reduced -98.2k |
| AMERIPRISE FINANCIAL INC 0.05% of their portfolio | 1.8m $153.1m | Reduced -26.3k |
| STATE STREET CORP 0.01% of their portfolio | 1.6m $140.0m | Added +115.4k |
| Invesco Ltd. 0.04% of their portfolio | 1.6m $137.0m | Added +177.2k |
| Legacy Advisors, LLC 24.77% of their portfolio | 1.6m $135.4m | Reduced -241.1k |
| Electron Capital Partners, LLC 6.01% of their portfolio | 1.6m $134.4m | Added +255.0k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 1.11% of their portfolio | 1.2m $102.0m | Reduced -400.3k |
| Hood River Capital Management LLC 3.66% of their portfolio | 1.2m $100.7m | Added +123.9k |
| PZENA INVESTMENT MANAGEMENT LLC 0.33% of their portfolio | 872.6k $74.5m | Reduced -26.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 806.1k $68.8m | Added +57.2k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 761.1k $64.9m | Added +402.6k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 636.1k $54.3m | Reduced -30.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 569.5k $48.6m | Added +30.9k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 548.1k $46.8m | Added +6.3k |
| NORGES BANK 0.01% of their portfolio | 547.0k $46.7m | Added +76.6k |
| MARSHALL WACE, LLP 0.12% of their portfolio | 538.1k $45.9m | Reduced -153.9k |
| Candriam S.C.A. 0.31% of their portfolio | 535.7k $45.7m | Added +2.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 475.2k $40.6m | New |
| Handelsbanken Fonder AB 0.24% of their portfolio | 456.5k $39.0m | Reduced -187.0k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 450.4k $38.4m | Reduced -16.6k |
| ACK Asset Management LLC 6.90% of their portfolio | 440.2k $37.6m | Added +135.2k |
| FMR LLC 0.00% of their portfolio | 430.1k $36.7m | Reduced -810 |
| Orbis Allan Gray Ltd 0.29% of their portfolio | 429.3k $36.6m | Added +100.9k |
| CREDIT SUISSE AG/ 0.04% of their portfolio | 418.0k $35.7m | Reduced -37.2k |
| MORGAN STANLEY 0.00% of their portfolio | 407.9k $34.8m | Added +33.5k |
| DNB Asset Management AS 0.24% of their portfolio | 405.0k $34.6m | Added +28.9k |
| M.D. Sass, LLC 5.95% of their portfolio | 389.3k $33.2m | Reduced -44.1k |
| Vontobel Holding Ltd. 0.32% of their portfolio | 385.9k $32.0m | Added +147.4k |
| Point72 Asset Management, L.P. 0.12% of their portfolio | 379.2k $32.4m | Reduced -223.7k |
| DekaBank Deutsche Girozentrale 0.08% of their portfolio | 378.1k $31.9m | Reduced -45.0k |
| LORD, ABBETT & CO. LLC 0.05% of their portfolio | 352.5k $30.1m | New |
| Hill City Capital, LP 5.20% of their portfolio | 350.0k $29.9m | New |
| Swedbank AB 0.06% of their portfolio | 336.9k $28.7m | Added +17.4k |
| EDMOND DE ROTHSCHILD HOLDING S.A. 0.64% of their portfolio | 324.1k $27.7m | Added +21.9k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.55% of their portfolio | 315.6k $26.9m | Reduced -41.7k |
| COUNTRY TRUST BANK 0.79% of their portfolio | 313.7k $26.8m | Added +38.9k |
| Mirae Asset Global Investments Co., Ltd. 0.07% of their portfolio | 301.4k $25.7m | Reduced -9.6k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.02% of their portfolio | 300.7k $25.7m | Added +247.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 289.1k $24.7m | Reduced -33.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 256.2k $21.9m | Added +13.8k |
| FIRST TRUST ADVISORS LP 0.03% of their portfolio | 254.4k $21.7m | Reduced -35.7k |
| BRUNI J V & CO /CO 2.86% of their portfolio | 239.3k $20.4m | Added +1.1k |
| PECONIC PARTNERS LLC 1.29% of their portfolio | 234.3k $20.0m | New |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 233.6k $19.9m | Added +35.0k |
| Bragg Financial Advisors, Inc 1.20% of their portfolio | 231.8k $19.8m | Added +249 |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 231.4k $19.7m | Added +8.4k |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 228.7k $19.5m | Added +28.4k |
| COOPER CREEK PARTNERS MANAGEMENT LLC 1.52% of their portfolio | 214.5k $18.3m | Added +188.9k |
| Pantechnicon Advisors LLP 9.06% of their portfolio | 198.0k $16.9m | First filing |
| Daiwa Securities Group Inc. 0.12% of their portfolio | 189.5k $16.2m | Reduced -2.5k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 189.2k $16.1m | Added +13.7k |
| Lombard Odier Asset Management (Europe) Ltd 0.69% of their portfolio | 188.9k $16.1m | Reduced -36.6k |
| AGF MANAGEMENT LTD 0.11% of their portfolio | 181.0k $15.4m | First filing |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.08% of their portfolio | 176.4k $15.1m | Added +89.6k |
| KIRR MARBACH & CO LLC /IN/ 4.60% of their portfolio | 172.9k $14.8m | Reduced -5.2k |
| Retirement Systems of Alabama 0.06% of their portfolio | 170.8k $14.6m | Added +2.9k |
| Arosa Capital Management LP 4.41% of their portfolio | 170.0k $14.5m | New |
| Merewether Investment Management, LP 1.39% of their portfolio | 167.3k $14.3m | New |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 158.3k $13.5m | New |
| Yaupon Capital Management LP 2.36% of their portfolio | 153.8k $13.1m | Added +103.4k |
| Swiss National Bank 0.01% of their portfolio | 150.5k $12.8m | Added +15.4k |
| SCOPUS ASSET MANAGEMENT, L.P. 0.52% of their portfolio | 150.4k $12.8m | New |
| TRUIST FINANCIAL CORP 0.02% of their portfolio | 147.6k $12.6m | Reduced -35.1k |
| California Public Employees Retirement System 0.01% of their portfolio | 136.8k $11.7m | Reduced -1.4k |
| COMMUNITY TRUST & INVESTMENT CO 1.05% of their portfolio | 135.0k $11.5m | Added +23.8k |
| MUHLENKAMP & CO INC 4.64% of their portfolio | 128.2k $10.9m | Reduced -124 |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 128.0k $10.9m | Added +2.8k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 126.3k $10.8m | Reduced -14.6k |
| Handelsinvest Investeringsforvaltning 1.48% of their portfolio | 110.0k $9.4m | Reduced -69.5k |
| MOORE CAPITAL MANAGEMENT, LP 0.25% of their portfolio | 105.6k $9.0m | New |
| KENNEDY CAPITAL MANAGEMENT LLC 0.25% of their portfolio | 104.4k $8.9m | New |
| Moran Wealth Management, LLC 0.33% of their portfolio | 103.2k $8.8m | First filing |
| CapWealth Advisors, LLC 1.03% of their portfolio | 102.6k $8.8m | Reduced -10.2k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio | 102.4k $8.7m | Reduced -2.8k |
| Pier Capital, LLC 1.29% of their portfolio | 92.6k $7.9m | Reduced -785 |
| AMERICAN INTERNATIONAL GROUP, INC. 0.05% of their portfolio | 91.9k $7.8m | Added +1.6k |
| Carmignac Gestion 0.14% of their portfolio | 88.2k $7.5m | Reduced -17.1k |
| Legal & General Group Plc 0.00% of their portfolio | 87.7k $7.5m | Added +4.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 80.9k $6.9m | Reduced -4.8k |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 79.6k $6.8m | Reduced -1.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 79.1k $6.8m | Added +6.1k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.01% of their portfolio | 79.0k $6.7m | Added +25.3k |
| First Washington CORP 3.27% of their portfolio | 78.1k $6.7m | Added +5.1k |
| Smith, Graham & Co., Investment Advisors, LP 0.74% of their portfolio | 71.0k $6.1m | Reduced -1.6k |
| UBS Group AG 0.00% of their portfolio | 66.5k $5.7m | Reduced -4.2k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 66.5k $5.7m | Added +14.4k |
| CASTLEARK MANAGEMENT LLC 0.29% of their portfolio | 65.4k $5.6m | New |
| Lombard Odier Asset Management (Switzerland) SA 0.43% of their portfolio | 63.1k $5.4m | Reduced -4.4k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 62.2k $5.2m | Reduced -55.3k |
| TOWNSEND ASSET MANAGEMENT CORP /NC/ /ADV 2.49% of their portfolio | 58.1k $5.0m | Added +18.0k |
| South Dakota Investment Council 0.11% of their portfolio | 57.8k $4.9m | Unchanged |
| Asset Management One Co., Ltd. 0.02% of their portfolio | 56.5k $4.8m | Added +568 |
| ARDSLEY ADVISORY PARTNERS LP 1.22% of their portfolio | 56.3k $4.8m | New |
| Qube Research & Technologies Ltd 0.03% of their portfolio | 56.2k $4.8m | Added +46.9k |
| Bellecapital International Ltd. 1.34% of their portfolio | 56.0k $4.8m | Added +585 |