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 ($6.5m this quarter). Holder counts are more reliable. Shares outstanding: 79.5m as of 2024-04-29, 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 ≈ $93.28. Options: 22 managers hold calls ($195.5m notional), 19 hold puts ($114.6m).
Trends to Q1 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 338 |
| Q4 2022 | 387 |
| Q1 2023 | 393 |
| Q2 2023 | 394 |
| Q3 2023 | 384 |
| Q4 2023 | 369 |
| Q1 2024 | 382 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 195 | 154 |
| Q1 2023 | 167 | 184 |
| Q2 2023 | 153 | 190 |
| Q3 2023 | 172 | 206 |
| Q4 2023 | 169 | 197 |
| Q1 2024 | 177 | 178 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2023 | $36.3m | $30.3m | 0.83 |
| Q3 2023 | $44.8m | $36.0m | 0.80 |
| Q4 2023 | $133.2m | $99.8m | 0.75 |
| Q1 2024 | $195.5m | $114.6m | 0.59 |
Biggest buyers
| COOPER CREEK PARTNERS MANAGEMENT LLC | New | +1.1m |
| Wolf Hill Capital Management, LP | New | +502.3k |
| Balyasny Asset Management L.P. | New | +468.5k |
| CITADEL ADVISORS LLC | Added | +439.3k |
| SAMLYN CAPITAL, LLC | Added | +406.0k |
| MORGAN STANLEY | Added | +378.5k |
| MACKENZIE FINANCIAL CORP | New | +269.1k |
| Penn Capital Management Company, LLC | New | +168.0k |
| Invesco Ltd. | Added | +154.7k |
| TWO SIGMA INVESTMENTS, LP | Added | +134.0k |
Biggest sellers
| Allspring Global Investments Holdings, LLC | Reduced | -1.5m |
| Alyeska Investment Group, L.P. | Sold out | -1.2m |
| NORDEA INVESTMENT MANAGEMENT AB | Reduced | -775.7k |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | -623.5k |
| ALLIANCEBERNSTEIN L.P. | Reduced | -515.2k |
| Hood River Capital Management LLC | Reduced | -384.6k |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Reduced | -293.7k |
| SG Capital Management LLC | Reduced | -268.4k |
| Swedbank AB | Reduced | -223.5k |
| Legacy Advisors, LLC | Reduced | -204.0k |
Biggest calls
| Twin Tree Management, LP | Added | $47.5m509.1k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $21.6m231.7k shares |
| CITADEL ADVISORS LLC | Reduced | $19.4m208.3k shares |
| CAPITAL FUND MANAGEMENT S.A. | Reduced | $18.7m200.5k shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | New | $18.6m200.0k shares |
| SCOPUS ASSET MANAGEMENT, L.P. | Reduced | $16.3m175.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $9.1m97.9k shares |
| Cubist Systematic Strategies, LLC | Reduced | $8.9m95.5k shares |
| Walleye Trading LLC | Added | $6.5m70.0k shares |
| BANK OF MONTREAL /CAN/ | Unchanged | $5.1m55.0k shares |
Biggest puts
| Twin Tree Management, LP | Added | $18.9m202.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $16.6m177.9k shares |
| CAPITAL FUND MANAGEMENT S.A. | Reduced | $15.5m165.8k shares |
| CITADEL ADVISORS LLC | Added | $14.9m160.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $9.5m102.3k shares |
| PEAK6 Investments LLC | New | $8.9m95.1k shares |
| Cubist Systematic Strategies, LLC | Added | $8.2m88.2k shares |
| Walleye Trading LLC | Reduced | $3.6m39.1k shares |
| GTS SECURITIES LLC | Reduced | $3.1m32.8k shares |
| Caption Management, LLC | Reduced | $2.8m30.0k 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 Q1 2024
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.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2022 | 0 | — | 0 | — | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 2 | $173.3k | $173.3k |
| Q1 2024 | 0 | — | 0 | — | — |
None reported in Q1 2024.
Holders, Q1 2024
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 6.0m $557.6m | Added +10.6k |
| BlackRock Inc. 0.01% of their portfolio | 5.5m $517.0m | Added +119.3k |
| NORDEA INVESTMENT MANAGEMENT AB 0.35% of their portfolio | 3.2m $298.5m | Reduced -775.7k |
| ALLIANCEBERNSTEIN L.P. 0.10% of their portfolio | 3.0m $276.0m | Reduced -515.2k |
| Invesco Ltd. 0.05% of their portfolio | 2.3m $212.2m | Added +154.7k |
| Hill City Capital, LP 14.64% of their portfolio | 2.1m $198.6m | Added +60.0k |
| Allspring Global Investments Holdings, LLC 0.29% of their portfolio | 2.0m $186.4m | Reduced -1.5m |
| STATE STREET CORP 0.01% of their portfolio | 1.8m $167.9m | Added +35.3k |
| Electron Capital Partners, LLC 7.03% of their portfolio | 1.7m $160.4m | Reduced -5.1k |
| MORGAN STANLEY 0.00% of their portfolio | 1.5m $143.7m | Added +378.5k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 1.4m $128.7m | Added +1.7k |
| MACQUARIE GROUP LTD 0.13% of their portfolio | 1.2m $114.9m | Reduced -61.0k |
| CITADEL ADVISORS LLC 0.11% of their portfolio | 1.2m $113.5m | Added +439.3k |
| Legacy Advisors, LLC 13.76% of their portfolio | 1.2m $108.9m | Reduced -204.0k |
| MILLENNIUM MANAGEMENT LLC 0.09% of their portfolio | 1.1m $105.2m | Reduced -145.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.1m $103.2m | Reduced -193.8k |
| COOPER CREEK PARTNERS MANAGEMENT LLC 4.11% of their portfolio | 1.1m $101.1m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 981.9k $91.6m | Added +39.2k |
| Point72 Asset Management, L.P. 0.24% of their portfolio | 878.0k $81.9m | Reduced -144.7k |
| SAMLYN CAPITAL, LLC 1.26% of their portfolio | 777.3k $72.5m | Added +406.0k |
| ACK Asset Management LLC 8.39% of their portfolio | 772.3k $72.0m | Unchanged |
| Orbis Allan Gray Ltd 0.43% of their portfolio | 761.3k $71.0m | Reduced -151.7k |
| Hood River Capital Management LLC 1.55% of their portfolio | 747.5k $69.7m | Reduced -384.6k |
| MARSHALL WACE, LLP 0.11% of their portfolio | 688.5k $64.2m | Reduced -97.3k |
| NORGES BANK 0.01% of their portfolio | 649.5k $60.6m | Added +29.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 622.5k $58.0m | Added +24.8k |
| Wolf Hill Capital Management, LP 3.09% of their portfolio | 502.3k $46.8m | New |
| Bank of New York Mellon Corp 0.01% of their portfolio | 479.0k $44.7m | Reduced -20.9k |
| Vontobel Holding Ltd. 0.35% of their portfolio | 475.4k $44.3m | Reduced -43.0k |
| Balyasny Asset Management L.P. 0.11% of their portfolio | 468.5k $43.7m | New |
| DNB Asset Management AS 0.23% of their portfolio | 465.7k $43.4m | Reduced -34.2k |
| FIRST TRUST ADVISORS LP 0.04% of their portfolio | 445.3k $41.5m | Added +62.7k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.36% of their portfolio | 418.4k $39.0m | Reduced -623.5k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 388.8k $36.3m | Reduced -54.8k |
| Mirae Asset Global Investments Co., Ltd. 0.07% of their portfolio | 346.6k $32.8m | Reduced -64.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 344.7k $32.1m | Added +1.7k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.04% of their portfolio | 321.1k $29.9m | Reduced -293.7k |
| COUNTRY TRUST BANK 0.77% of their portfolio | 319.0k $29.7m | Reduced -35.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 285.3k $26.6m | Added +54.8k |
| TWO SIGMA ADVISERS, LP 0.06% of their portfolio | 284.3k $26.5m | Added +114.8k |
| MACKENZIE FINANCIAL CORP 0.04% of their portfolio | 269.1k $25.1m | New |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC 2.07% of their portfolio | 262.0k $24.4m | Added +132.0k |
| BRUNI J V & CO /CO 2.64% of their portfolio | 238.5k $22.2m | Added +510 |
| COMMUNITY TRUST & INVESTMENT CO 1.56% of their portfolio | 237.2k $22.1m | Added +1.4k |
| EDMOND DE ROTHSCHILD HOLDING S.A. 0.36% of their portfolio | 230.0k $21.4m | Added +10.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 227.7k $21.2m | Added +5.7k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 225.9k $21.1m | Reduced -7.5k |
| Candriam S.C.A. 0.13% of their portfolio | 211.3k $19.7m | Added +12.3k |
| PZENA INVESTMENT MANAGEMENT LLC 0.06% of their portfolio | 201.8k $18.8m | Unchanged |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 194.1k $18.1m | Reduced -202 |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 178.9k $16.7m | Reduced -6.7k |
| Man Group plc 0.04% of their portfolio | 175.9k $16.4m | Added +48.0k |
| KIRR MARBACH & CO LLC /IN/ 3.95% of their portfolio | 175.9k $16.4m | Added +1.6k |
| Penn Capital Management Company, LLC 1.40% of their portfolio | 168.0k $15.7m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 153.3k $14.3m | Added +94.0k |
| SG Capital Management LLC 4.57% of their portfolio | 149.6k $13.9m | Reduced -268.4k |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 148.2k $13.8m | Added +134.0k |
| PEAK6 Investments LLC 0.64% of their portfolio | 141.5k $13.2m | Reduced -30.4k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 141.4k $13.2m | Reduced -63.0k |
| Schonfeld Strategic Advisors LLC 0.10% of their portfolio | 136.2k $12.7m | Added +72.8k |
| MUHLENKAMP & CO INC 3.60% of their portfolio | 133.0k $12.4m | Added +2.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 130.3k $12.1m | Added +42.7k |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.35% of their portfolio | 129.6k $12.1m | Reduced -7.3k |
| Appian Way Asset Management LP 3.93% of their portfolio | 128.7k $12.0m | New |
| Gotham Asset Management, LLC 0.18% of their portfolio | 126.5k $11.8m | Added +40.9k |
| Assenagon Asset Management S.A. 0.03% of their portfolio | 125.4k $11.7m | Reduced -15.3k |
| Swiss National Bank 0.01% of their portfolio | 124.3k $11.6m | Unchanged |
| KENNEDY CAPITAL MANAGEMENT LLC 0.24% of their portfolio | 123.8k $11.5m | Reduced -28.3k |
| PINEBRIDGE INVESTMENTS, L.P. 0.09% of their portfolio | 117.9k $11.0m | Added +12.2k |
| SIR Capital Management, L.P. 1.01% of their portfolio | 107.1k $10.0m | New |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.04% of their portfolio | 103.9k $9.7m | Added +612 |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.03% of their portfolio | 101.8k $9.5m | Reduced -36.3k |
| CREDIT SUISSE AG/ 0.01% of their portfolio | 101.0k $9.4m | Added +688 |
| VAN ECK ASSOCIATES CORP 0.01% of their portfolio | 98.3k $9.2m | New |
| Aventail Capital Group, LP 0.69% of their portfolio | 96.8k $9.0m | New |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 96.4k $9.0m | Reduced -74.3k |
| Legal & General Group Plc 0.00% of their portfolio | 93.9k $8.8m | Added +3.2k |
| Sagefield Capital LP 1.06% of their portfolio | 92.9k $8.7m | Added +7.7k |
| ROYCE & ASSOCIATES LP 0.08% of their portfolio | 92.3k $8.6m | Unchanged |
| Moran Wealth Management, LLC 0.28% of their portfolio | 92.2k $8.6m | Added +124 |
| TRUIST FINANCIAL CORP 0.01% of their portfolio | 91.7k $8.6m | Reduced -3.1k |
| California Public Employees Retirement System 0.01% of their portfolio | 86.9k $8.1m | Reduced -26.4k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 86.0k $8.0m | Reduced -10.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 83.4k $7.8m | Reduced -15.7k |
| TWINBEECH CAPITAL LP 0.16% of their portfolio | 82.4k $7.7m | New |
| AMERICAN INTERNATIONAL GROUP, INC. 0.03% of their portfolio | 80.0k $7.5m | Reduced -1.6k |
| LGT Group Foundation 0.17% of their portfolio | 77.7k $7.2m | Added +3.9k |
| Engineers Gate Manager LP 0.19% of their portfolio | 77.2k $7.2m | Added +38.0k |
| DECADE RENEWABLE PARTNERS LP 3.77% of their portfolio | 76.3k $7.1m | New |
| Retirement Systems of Alabama 0.03% of their portfolio | 75.9k $7.1m | Reduced -107.8k |
| BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 0.05% of their portfolio | 75.0k $7.0m | Added +15.5k |
| BARCLAYS PLC 0.00% of their portfolio | 68.1k $6.3m | Added +3.6k |
| Holocene Advisors, LP 0.02% of their portfolio | 64.7k $6.0m | Added +37.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 63.6k $5.9m | Reduced -3.4k |
| First Washington CORP 2.26% of their portfolio | 63.5k $5.9m | Unchanged |
| Dana Investment Advisors, Inc. 0.19% of their portfolio | 62.7k $5.8m | New |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 60.4k $5.6m | Added +35.1k |
| Trexquant Investment LP 0.11% of their portfolio | 60.4k $5.6m | Added +38.9k |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.02% of their portfolio | 58.7k $5.5m | New |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 57.9k $5.4m | New |