MASTEC INC (MTZ)
Institutional ownership reported to the SEC as of Q3 2026, across 32 quarters.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Venture Visionary Partners LLC | $1.3M | 5,937 | 0.03% | 7q | +9.1%+$106.0K |
| Veracity Capital LLC | $683.6K | 3,200 | 0.18% | 2q | -0.9%-$6.4K |
| Bangor Savings Bank | $643.6K | 3,013 | 0.05% | 24q | -0.7%-$4.7K |
| GILPIN WEALTH MANAGEMENT, LLC | $435.8K | 2,040 | 0.29% | 4q | -5.1%-$23.5K |
| GAMMA Investing LLC | $409.5K | 1,917 | 0.01% | 12q | -12.5%-$58.5K |
| Barden Capital Management, Inc. | $360.6K | 1,688 | 0.33% | new | NEW |
| Sprinkle Financial Consultants LLC | $313.6K | 1,468 | 0.12% | 4q | HELD |
| Versant Capital Management, Inc | $253.6K | 1,187 | 0.02% | 23q | -16.6%-$50.4K |
| Wedmont Private Capital | $227.7K | 1,051 | 0.01% | 3q | HELD |
| Acropolis Investment Management, LLC | $122.4K | 573 | 0.00% | 3q | -50.0%-$122.4K |
| Farther Finance Advisors, LLC | $69.0K | 323 | 0.00% | 12q | -71.6%-$173.7K |
| CoreCap Advisors, LLC | $53.6K | 251 | 0.00% | 8q | -74.9%-$160.2K |
| ARMSTRONG ADVISORY GROUP, INC | $42.1K | 197 | 0.00% | 10q | +40.7%+$12.2K |
| GK Wealth Management LLC | $28.9K | 135 | 0.02% | new | NEW |
| ELEVATION WEALTH PARTNERS, LLC | $23.5K | 110 | 0.01% | 5q | +223.5%+$16.2K |
| MassMutual Private Wealth & Trust, FSB | $20.7K | 97 | 0.00% | 16q | -22.4%-$6.0K |
| Retirement Wealth Solutions LLC | $13.9K | 65 | 0.01% | 2q | +828.6%+$12.4K |
| EASTERN BANK | $8.1K | 38 | 0.00% | 9q | HELD |
| Byrne Asset Management LLC | $5.3K | 25 | 0.00% | 20q | HELD |
| Mn Services Vermogensbeheer B.V. | $3.8K | 17,800 | 0.03% | 2q | HELD |
| TOTH FINANCIAL ADVISORY CORP | $2.6K | 12 | 0.00% | 7q | -50.0%-$2.6K |
| MJT & Associates Financial Advisory Group, Inc. | $1.5K | 7 | 0.00% | 2q | +600.0%+$1.3K |
| Planning Strategies Inc. | $1.1K | 5 | 0.00% | 2q | -37.5% |
| Davis Capital Management | $427 | 2 | 0.00% | 2q | -50.0% |
| Grove Bank & Trust | $214 | 1 | 0.00% | 2q | HELD |
| CX Institutional | $15 | 70 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-13 | 13D/A | Jose Ramon Mas INDIVIDUALwith 6 co-filers | 7.7% |
| 2026-08-13 | 13D/A | Jorge Mas INDIVIDUALwith 7 co-filers | 14.8% |
| 2026-07-29 | 13G/A | BlackRock, Inc. | 8.1% |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-03 | Csiszar Ernst N | Director | Sold | 6,500 | $2.4M |
| 2026-05-04 | Campbell C Robert | Director | Sold | 3,000 | $1.3M |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 24 | $5.0M | 23,342 | 2 | 5 | 12 | 0.0% |
| Q2 2026 | 922 | $28.0B | 64,732,942 | 184 | 310 | 282 | 4.0% |
| Q1 2026 | 806 | $19.3B | 58,721,454 | 171 | 240 | 250 | 2.1% |
| Q4 2025 | 698 | $13.2B | 59,159,296 | 86 | 224 | 214 | 2.5% |
| Q3 2025 | 656 | $12.5B | 57,735,291 | 133 | 193 | 214 | 1.9% |
| Q2 2025 | 599 | $9.7B | 55,880,111 | 116 | 190 | 178 | 2.0% |
| Q1 2025 | 529 | $6.7B | 56,417,511 | 78 | 192 | 151 | 2.1% |
| Q4 2024 | 538 | $8.1B | 58,163,681 | 88 | 176 | 149 | 2.2% |
| Q3 2024 | 475 | $7.4B | 58,204,260 | 81 | 137 | 143 | 3.5% |
| Q2 2024 | 438 | $6.7B | 59,917,986 | 79 | 125 | 144 | 3.9% |
| Q1 2024 | 391 | $6.0B | 60,649,058 | 57 | 104 | 132 | 5.2% |
| Q4 2023 | 377 | $5.0B | 62,868,817 | 55 | 116 | 113 | 4.7% |
| Q3 2023 | 387 | $4.2B | 57,119,294 | 57 | 102 | 139 | 1.9% |
| Q2 2023 | 398 | $6.9B | 58,113,287 | 36 | 108 | 151 | 1.0% |
| Q1 2023 | 397 | $5.6B | 58,818,861 | 46 | 118 | 132 | 1.0% |
| Q4 2022 | 390 | $5.0B | 58,426,040 | 75 | 114 | 123 | 1.0% |
| Q3 2022 | 340 | $3.6B | 55,527,081 | 39 | 90 | 124 | 0.8% |
| Q2 2022 | 356 | $4.0B | 54,597,010 | 32 | 103 | 140 | 1.0% |
| Q1 2022 | 385 | $4.8B | 54,466,054 | 51 | 143 | 110 | 0.7% |
| Q4 2021 | 391 | $4.8B | 51,779,427 | 51 | 98 | 134 | 1.0% |
| Q3 2021 | 368 | $4.6B | 52,434,287 | 31 | 119 | 125 | 1.9% |
| Q2 2021 | 419 | $5.9B | 54,467,999 | 62 | 110 | 165 | 1.5% |
| Q1 2021 | 398 | $5.7B | 59,645,519 | 82 | 107 | 134 | 1.4% |
| Q4 2020 | 359 | $4.3B | 61,588,852 | 62 | 94 | 137 | 1.7% |
| Q3 2020 | 326 | $2.6B | 61,708,233 | 44 | 85 | 140 | 1.2% |
| Q2 2020 | 319 | $3.0B | 65,723,320 | 56 | 91 | 127 | 1.3% |
| Q1 2020 | 314 | $2.1B | 61,240,031 | 28 | 108 | 127 | 2.0% |
| Q4 2019 | 397 | $4.3B | 64,814,977 | 65 | 115 | 150 | 2.5% |
| Q3 2019 | 369 | $4.1B | 61,280,472 | 82 | 93 | 141 | 2.6% |
| Q2 2019 | 318 | $3.7B | 71,527,097 | 39 | 88 | 120 | 1.1% |
| Q1 2019 | 336 | $3.2B | 65,895,238 | 62 | 76 | 128 | 2.4% |
| Q4 2018 | 304 | $2.9B | 68,801,471 | 5 | 11 | 2 | 3.4% |