Mastec Inc
MTZ- Exchange
- NYSE
- Industry
- Water, Sewer, Pipeline, Comm & Power Line Construction
- SEC CIK
- 0000015615
No open-market purchases or sales by Mastec Inc insiders were filed in the last 90 days; 911 institutions reported holding it in 13F filings for Q2 2026, worth $24.7B in total; 4 superinvestors hold it, including Lone Pine Capital and Coatue Management.
13F holders, Q1 2026
Institutional positions in Mastec Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 811
- +122 vs. Q4 2025
- Shares held
- 58.0M
- +5.36M (+10.2%) vs. Q4 2025
- Total value
- $18.6B
- +$7.19B (+62.7%) vs. Q4 2025
- New holders
- 184
- 256 more added
- Sold out
- 62
- 263 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MTZ on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 911 | $24.7B |
| Q1 2026 | 811 | $18.6B |
| Q4 2025 | 695 | $12.8B |
| Q3 2025 | 652 | $12.2B |
| Q2 2025 | 594 | $9.50B |
| Q1 2025 | 523 | $6.56B |
| Q4 2024 | 532 | $7.83B |
| Q3 2024 | 470 | $7.09B |
| Q2 2024 | 430 | $6.35B |
| Q1 2024 | 382 | $5.51B |
| Q4 2023 | 368 | $4.66B |
| Q3 2023 | 382 | $4.11B |
| Q2 2023 | 393 | $6.85B |
| Q1 2023 | 394 | $5.49B |
| Q4 2022 | 386 | $4.97B |
| Q3 2022 | 338 | $3.53B |
| Q2 2022 | 356 | $3.91B |
| Q1 2022 | 388 | $4.70B |
| Q4 2021 | 388 | $4.77B |
| Q3 2021 | 366 | $4.53B |
| Q2 2021 | 415 | $5.77B |
| Q1 2021 | 392 | $5.59B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Mastec Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7,309,609 | $2.35B | 0.04% | +198,355+2.8% | Added |
| Peconic Partners LLC | 3,578,431 | $1.15B | 19.92% | +1,978,431+123.7% | Added |
| Vanguard Capital Management LLC | 2,804,295 | $902.3M | 0.02% | +2,804,295 | New |
| Vanguard Portfolio Management LLC | 2,770,038 | $891.2M | 0.05% | +2,770,038 | New |
| Hill City Capital, LP | 2,155,000 | $693.3M | 24.77% | 00.0% | Unchanged |
| State Street Corp | 1,869,788 | $601.6M | 0.02% | +43,366+2.4% | Added |
| Victory Capital Management Inc | 1,592,523 | $512.4M | 0.33% | −1,044,928−39.6% | Reduced |
| Lone Pine Capital LLCSuperinvestorLone Pine Capital | 1,531,050 | $492.6M | 3.93% | +1,531,050 | New |
| First Trust Advisors LP | 1,411,584 | $454.2M | 0.32% | +100,151+7.6% | Added |
| Geode Capital Management, LLC | 1,371,909 | $441.5M | 0.03% | +151,206+12.4% | Added |
| Bank of America Corp | 1,330,066 | $427.9M | 0.03% | +75,100+6.0% | Added |
| Hood River Capital Management LLC | 1,295,385 | $416.8M | 4.18% | −188,276−12.7% | Reduced |
| Invesco Ltd. | 1,225,757 | $394.4M | 0.04% | −294,273−19.4% | Reduced |
| Dimensional Fund Advisors LP | 731,650 | $235.3M | 0.05% | −139,196−16.0% | Reduced |
| Electron Capital Partners, LLC | 713,013 | $229.4M | 10.78% | −91,290−11.4% | Reduced |
| Nordea Investment Management AB | 733,628 | $228.8M | 0.21% | −416,641−36.2% | Reduced |
| Bank of New York Mellon Corp | 656,104 | $211.1M | 0.04% | +19,745+3.1% | Added |
| AQR Capital Management LLC | 660,054 | $209.5M | 0.10% | −70,925−9.7% | Reduced |
| Canada Pension Plan Investment Board | 638,964 | $205.6M | 0.13% | +488,849+325.6% | Added |
| FMR LLC | 627,901 | $202.0M | 0.01% | −36,689−5.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 604,677 | $194.5M | 0.26% | +46,900+8.4% | Added |
| Morgan Stanley | 586,743 | $188.8M | 0.01% | +96,832+19.8% | Added |
| Coatue Management LLCSuperinvestorCoatue Management | 583,597 | $187.8M | 0.65% | −94,312−13.9% | Reduced |
| Charles Schwab Investment Management Inc | 511,243 | $164.5M | 0.03% | +9,117+1.8% | Added |
| Millennium Management LLC | 503,199 | $161.9M | 0.12% | −229,074−31.3% | Reduced |
| Qube Research & Technologies Ltd | 485,385 | $156.2M | 0.22% | +124,526+34.5% | Added |
| Goldman Sachs Group Inc | 474,514 | $152.7M | 0.02% | +123,860+35.3% | Added |
| Northern Trust Corp | 472,583 | $152.0M | 0.02% | +16,786+3.7% | Added |
| Point72 Asset Management, L.P. | 433,058 | $139.3M | 0.24% | −287,713−39.9% | Reduced |
| Vanguard Fiduciary Trust Co | 383,817 | $123.5M | 0.03% | +383,817 | New |
| UBS Group AG | 381,115 | $122.6M | 0.02% | −69,888−15.5% | Reduced |
| Nomura Asset Management International Inc. | 337,823 | $108.7M | 0.19% | −204,910−37.8% | Reduced |
| 140 Summer Partners LP | 329,220 | $105.9M | 9.35% | −45,029−12.0% | Reduced |
| Third Point LLCSuperinvestorThird Point | 320,000 | $103.0M | 4.94% | −605,000−65.4% | Reduced |
| UBS Asset Management Americas Inc | 316,149 | $101.7M | 0.02% | −2,249−0.7% | Reduced |
| BNP Paribas Arbitrage, SA | 313,383 | $100.8M | 0.07% | +142,307+83.2% | Added |
| Citadel Advisors LLC | 279,778 | $90.0M | 0.06% | +258,511+1,215.5% | Added |
| Forest Avenue Capital Management LP | 269,851 | $86.8M | 5.49% | −224,160−45.4% | Reduced |
| Assenagon Asset Management S.A. | 255,222 | $82.1M | 0.13% | +90,682+55.1% | Added |
| Westfield Capital Management Co LP | 249,980 | $80.4M | 0.34% | +249,980 | New |
| Bessemer Group Inc | 231,965 | $74.6M | 0.12% | +229,129+8,079.3% | Added |
| Ameriprise Financial Inc | 231,796 | $74.6M | 0.02% | −704−0.3% | Reduced |
| Raymond James Financial Inc | 231,899 | $73.7M | 0.02% | −42,949−15.6% | Reduced |
| Arrowstreet Capital, Limited Partnership | 227,284 | $73.1M | 0.04% | +73,615+47.9% | Added |
| Squarepoint Ops LLC | 225,650 | $72.6M | 0.16% | +110,969+96.8% | Added |
| Anomaly Capital Management, LP | 224,498 | $72.2M | 4.37% | +224,498 | New |
| Merewether Investment Management, LP | 223,061 | $71.8M | 1.39% | −346,079−60.8% | Reduced |
| Freestone Grove Partners LP | 220,400 | $70.9M | 0.51% | −235,217−51.6% | Reduced |
| Bowen Hanes & Co Inc | 215,465 | $69.3M | 1.69% | +20,025+10.2% | Added |
| Hennessy Advisors Inc | 205,100 | $66.0M | 2.38% | −21,500−9.5% | Reduced |
| JPMorgan Chase & Co | 202,002 | $61.8M | 0.00% | −14,195−6.6% | Reduced |
| Manufacturers Life Insurance Company, The | 187,950 | $60.5M | 0.05% | −51,575−21.5% | Reduced |
| Lord, Abbett & Co. LLC | 184,274 | $59.3M | 0.19% | −83,240−31.1% | Reduced |
| OP Asset Management Ltd | 183,332 | $59.0M | 0.59% | −1,588−0.9% | Reduced |
| Vontobel Holding Ltd. | 180,481 | $58.1M | 0.20% | +18,453+11.4% | Added |
| Amundi | 171,587 | $55.2M | 0.02% | +101,653+145.4% | Added |
| Gotham Asset Management, LLC | 170,770 | $54.9M | 0.17% | −36,759−17.7% | Reduced |
| Rhumbline Advisers | 168,113 | $54.1M | 0.05% | +3,486+2.1% | Added |
| Nuveen, LLC | 161,541 | $52.0M | 0.01% | +2,476+1.6% | Added |
| Kirr Marbach & Co LLC | 160,197 | $51.5M | 9.39% | −7,359−4.4% | Reduced |
| Northwestern Mutual Wealth Management Co | 152,681 | $49.1M | 0.03% | −36,334−19.2% | Reduced |
| Goodlander Investment Management, LLC | 145,000 | $46.7M | 16.14% | −25,000−14.7% | Reduced |
| Hillman Co | 144,689 | $46.6M | 18.10% | 00.0% | Unchanged |
| Schroder Investment Management Group | 144,548 | $46.5M | 0.04% | −55,695−27.8% | Reduced |
| SG Americas Securities, LLC | 138,809 | $44.7M | 0.05% | +109,040+366.3% | Added |
| Samlyn Capital, LLC | 138,080 | $44.4M | 0.76% | −168,283−54.9% | Reduced |
| Principal Financial Group Inc | 137,151 | $44.1M | 0.02% | −13,050−8.7% | Reduced |
| Country Trust Bank | 131,651 | $42.4M | 0.81% | −60,471−31.5% | Reduced |
| Balyasny Asset Management LLC | 128,628 | $41.4M | 0.08% | +497+0.4% | Added |
| Swiss National Bank | 126,000 | $40.5M | 0.02% | +1,500+1.2% | Added |
| Algert Global LLC | 118,056 | $38.0M | 0.57% | −8,179−6.5% | Reduced |
| Wells Fargo & Company | 117,012 | $37.6M | 0.01% | −19,184−14.1% | Reduced |
| California Public Employees Retirement System | 116,324 | $37.4M | 0.02% | −184−0.2% | Reduced |
| Newbrook Capital Advisors LP | 112,985 | $36.4M | 6.76% | +112,985 | New |
| ThornTree Capital Partners LP | 112,741 | $36.3M | 6.44% | +112,741 | New |
| Community Trust & Investment Co | 109,913 | $35.4M | 1.92% | −14,122−11.4% | Reduced |
| Driehaus Capital Management LLC | 104,002 | $33.5M | 0.25% | −193−0.2% | Reduced |
| Federated Hermes, Inc. | 102,905 | $33.1M | 0.05% | −4,001−3.7% | Reduced |
| Holocene Advisors, LP | 101,724 | $32.7M | 0.08% | −307,022−75.1% | Reduced |
| Webs Creek Capital Management LP | 101,590 | $32.7M | 5.66% | −100,274−49.7% | Reduced |
| Two Sigma Investments, LP | 100,326 | $32.3M | 0.03% | +4,022+4.2% | Added |
| Jennison Associates LLC | 99,486 | $32.0M | 0.02% | −3,370−3.3% | Reduced |
| Envestnet Asset Management Inc | 94,548 | $30.4M | 0.01% | +24,552+35.1% | Added |
| Jane Street Group, LLC | 93,956 | $30.2M | 0.03% | +90,393+2,537.0% | Added |
| Legacy Advisors, LLC | 93,953 | $30.2M | 3.56% | −286,755−75.3% | Reduced |
| Trexquant Investment LP | 92,112 | $29.6M | 0.21% | +92,112 | New |
| Legal & General Group Plc | 91,862 | $29.6M | 0.01% | −4,967−5.1% | Reduced |
| Brevan Howard Capital Management LP | 94,669 | $29.5M | 0.30% | +86,020+994.6% | Added |
| SEI Investments Co | 89,109 | $28.7M | 0.03% | −12,607−12.4% | Reduced |
| Alyeska Investment Group, L.P. | 87,486 | $28.1M | 0.08% | +46,586+113.9% | Added |
| Quantinno Capital Management LP | 84,387 | $27.2M | 0.05% | +11,193+15.3% | Added |
| Cooper Creek Partners Management LLC | 83,706 | $26.9M | 1.30% | −100,132−54.5% | Reduced |
| LGT Group Foundation | 81,169 | $26.1M | 0.32% | +81,169 | New |
| LPL Financial LLC | 80,847 | $26.0M | 0.01% | −2,225−2.7% | Reduced |
| Toronto Dominion Bank | 80,025 | $25.7M | 0.05% | +79,983+190,435.7% | Added |
| Makena Capital Management LLC | 79,225 | $25.5M | 2.94% | −23,198−22.6% | Reduced |
| Retirement Systems of Alabama | 75,196 | $24.2M | 0.08% | +1,582+2.1% | Added |
| Russell Investments Group, Ltd. | 74,850 | $24.1M | 0.03% | −112,666−60.1% | Reduced |
| California State Teachers Retirement System | 73,004 | $23.5M | 0.02% | +13,187+22.0% | Added |
| Cushing Asset Management, LP | 70,900 | $22.8M | 1.14% | +400+0.6% | Added |