MTZ
Mastec Inc
$360.21
-12.68 (-3.40%)
At close · Jul 13
Market Cap
$28.85B
Shares
79,018,556
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 813
Total Value: $18,091,580,039
Total Shares: 56,136,656
Showing 1–100
of 837 holdings by value
· page 1 of 9
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 807 13F filersTop Holder
13.0%
of institutional value
Top 5
31.5%
of institutional value
Top 10
44.3%
of institutional value
HHI
330
Broadly held
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. | $2,351,793,590 | 13.00% | 7,309,609 | Shares | Sole | 2026-05-13 | ||||
| Mid PECONIC PARTNERS LLC | $1,151,324,389 | 6.36% | 3,578,431 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $902,253,873 | 4.99% | 2,804,295 | Shares | Defined | 2026-05-15 | ||||
| Mid Hill City Capital, LP | $693,349,700 | 3.83% | 2,155,000 | Shares | Sole | 2026-05-15 | ||||
| Mega STATE STREET CORP | $601,585,591 | 3.33% | 1,869,788 | Shares | Defined | 2026-05-15 | ||||
| Mega VICTORY CAPITAL MANAGEMENT INC | $512,378,350 | 2.83% | 1,592,523 | Shares | Sole | 2026-05-15 | ||||
| Large LONE PINE CAPITAL LLC | $492,600,027 | 2.72% | 1,531,050 | Shares | Sole | 2026-05-15 | ||||
| Mega FIRST TRUST ADVISORS LP | $454,163,036 | 2.51% | 1,411,584 | Shares | Sole | 2026-05-13 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $441,398,001 | 2.44% | 1,371,909 | Shares | Defined | 2026-05-15 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $427,935,433 | 2.37% | 1,330,066 | Shares | Defined | 2026-05-18 | ||||
| Mid Hood River Capital Management LLC | $416,777,169 | 2.30% | 1,295,385 | Shares | Sole | 2026-05-15 | ||||
| Mega Invesco Ltd. | $394,375,048 | 2.18% | 1,225,757 | Shares | Defined | 2026-05-12 | ||||
| Mega NORDEA INVESTMENT MANAGEMENT AB | $236,037,471 | 1.30% | 733,628 | Shares | Defined | 2026-05-13 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $235,401,068 | 1.30% | 731,650 | Shares | Sole | 2026-05-07 | ||||
| Mid Electron Capital Partners, LLC | $229,404,802 | 1.27% | 713,013 | Shares | Defined | 2026-05-15 | ||||
| Mega AQR CAPITAL MANAGEMENT LLC | $212,365,770 | 1.17% | 660,054 | Shares | Defined | 2026-05-15 | ||||
| Mega Bank of New York Mellon Corp Bank | $211,094,892 | 1.17% | 656,104 | Shares | Defined | 2026-05-05 | ||||
| Mega CANADA PENSION PLAN INVESTMENT BOARD Pension | $205,580,277 | 1.14% | 638,964 | Shares | Sole | 2026-05-15 | ||||
| Mega FMR LLC | $202,020,866 | 1.12% | 627,901 | Shares | Defined | 2026-05-15 | ||||
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $194,548,776 | 1.08% | 604,677 | Shares | Defined | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $188,778,684 | 1.04% | 586,743 | Shares | Defined | 2026-05-15 | ||||
| Large COATUE MANAGEMENT LLC | $187,766,498 | 1.04% | 583,597 | Shares | Defined | 2026-05-15 | ||||
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $164,487,322 | 0.91% | 511,243 | Shares | Sole | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $161,899,246 | 0.89% | 503,199 | Shares | Sole | 2026-05-15 | ||||
| Large Qube Research & Technologies Ltd | $156,167,769 | 0.86% | 485,385 | Shares | Sole | 2026-05-15 | ||||
| Mega GOLDMAN SACHS GROUP INC | $152,670,133 | 0.84% | 474,514 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $152,048,852 | 0.84% | 472,583 | Shares | Defined | 2026-05-14 | ||||
| Large Point72 Asset Management, L.P. | $139,332,080 | 0.77% | 433,058 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $123,489,281 | 0.68% | 383,817 | Shares | Defined | 2026-05-08 | ||||
| Mega UBS Group AG | $122,619,938 | 0.68% | 381,115 | Shares | Defined | 2026-05-05 | ||||
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $108,691,172 | 0.60% | 337,823 | Shares | Defined | 2026-05-15 | ||||
| Mid 140 Summer Partners LP | $105,923,242 | 0.59% | 329,220 | Shares | Defined | 2026-05-14 | ||||
| Mid Third Point LLC | $102,956,800 | 0.57% | 320,000 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $101,717,774 | 0.56% | 316,149 | Shares | Defined | 2026-05-13 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $100,827,846 | 0.56% | 313,383 | Shares | Defined | 2026-05-12 | ||||
| Mega CITADEL ADVISORS LLC | $90,015,773 | 0.50% | 279,778 | Shares | Defined | 2026-05-15 | ||||
| Mid Forest Avenue Capital Management LP | $86,821,860 | 0.48% | 269,851 | Shares | Sole | 2026-05-14 | ||||
| Large WESTFIELD CAPITAL MANAGEMENT CO LP | $80,428,565 | 0.44% | 249,980 | Shares | Sole | 2026-05-11 | ||||
| Large BESSEMER GROUP INC | $74,632,413 | 0.41% | 231,965 | Shares | Defined | 2026-05-06 | ||||
| Mega RAYMOND JAMES FINANCIAL INC | $74,611,181 | 0.41% | 231,899 | Shares | Defined | 2026-05-14 | ||||
| Mega AMERIPRISE FINANCIAL INC | $74,578,043 | 0.41% | 231,796 | Shares | Defined | 2026-05-15 | ||||
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $73,126,354 | 0.40% | 227,284 | Shares | Defined | 2026-05-14 | ||||
| Large Squarepoint Ops LLC | $72,600,631 | 0.40% | 225,650 | Shares | Defined | 2026-05-15 | ||||
| Mid Anomaly Capital Management, LP | $72,229,986 | 0.40% | 224,498 | Shares | Sole | 2026-05-15 | ||||
| Mid Merewether Investment Management, LP | $71,767,646 | 0.40% | 223,061 | Shares | Sole | 2026-05-15 | ||||
| Large Freestone Grove Partners LP | $70,911,496 | 0.39% | 220,400 | Shares | Sole | 2026-05-15 | ||||
| Mid BOWEN HANES & CO INC | $69,323,709 | 0.38% | 215,465 | Shares | Sole | 2026-05-14 | ||||
| Mid HENNESSY ADVISORS INC | $65,988,874 | 0.36% | 205,100 | Shares | Sole | 2026-04-21 | ||||
| Mega JPMORGAN CHASE & CO | $64,992,119 | 0.36% | 202,002 | Shares | Other | 2026-05-13 | ||||
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance | $60,471,033 | 0.33% | 187,950 | Shares | Defined | 2026-05-15 | ||||
| Large LORD, ABBETT & CO. LLC | $59,288,316 | 0.33% | 184,274 | Shares | Sole | 2026-05-14 | ||||
| Mid OP Asset Management Ltd | $58,985,237 | 0.33% | 183,332 | Shares | Sole | 2026-04-10 | ||||
| Large Vontobel Holding Ltd. | $58,067,955 | 0.32% | 180,481 | Shares | Defined | 2026-05-08 | ||||
| Mega Amundi | $55,206,399 | 0.31% | 171,587 | Shares | Defined | 2026-05-18 | ||||
| Large Gotham Asset Management, LLC | $54,943,539 | 0.30% | 170,770 | Shares | Sole | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $54,534,930 | 0.30% | 169,500 | Call | Other | 2026-05-15 | ||||
| Mega RHUMBLINE ADVISERS | $54,088,676 | 0.30% | 168,113 | Shares | Sole | 2026-05-12 | ||||
| Large Assenagon Asset Management S.A. | $53,754,535 | 0.30% | 129,199 | Shares | Sole | 2026-07-08 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $51,993,184 | 0.29% | 161,600 | Put | Other | 2026-05-15 | ||||
| Mega Nuveen, LLC | $51,974,201 | 0.29% | 161,541 | Shares | Defined | 2026-04-30 | ||||
| Small KIRR MARBACH & CO LLC /IN/ | $51,541,782 | 0.28% | 160,197 | Shares | Sole | 2026-04-17 | ||||
| Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $49,123,584 | 0.27% | 152,681 | Shares | Defined | 2026-05-07 | ||||
| Small Goodlander Investment Management, LLC | $46,652,300 | 0.26% | 145,000 | Shares | Sole | 2026-05-18 | ||||
| Small HILLMAN CO | $46,552,238 | 0.26% | 144,689 | Shares | Sole | 2026-04-23 | ||||
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP | $46,506,871 | 0.26% | 144,548 | Shares | Sole | 2026-05-14 | ||||
| Large SG Americas Securities, LLC Broker-Dealer | $44,660,407 | 0.25% | 138,809 | Shares | Sole | 2026-04-16 | ||||
| Mid SAMLYN CAPITAL, LLC | $44,425,857 | 0.25% | 138,080 | Shares | Defined | 2026-05-15 | ||||
| Mega PRINCIPAL FINANCIAL GROUP INC | $44,126,962 | 0.24% | 137,151 | Shares | Defined | 2026-05-04 | ||||
| Mid COUNTRY TRUST BANK Bank | $42,357,392 | 0.23% | 131,651 | Shares | Sole | 2026-04-10 | ||||
| Large Balyasny Asset Management L.P. | $41,384,772 | 0.23% | 128,628 | Shares | Sole | 2026-05-15 | ||||
| Mega Swiss National Bank Bank | $40,539,240 | 0.22% | 126,000 | Shares | Sole | 2026-05-07 | ||||
| Mid ALGERT GLOBAL LLC | $37,983,337 | 0.21% | 118,056 | Shares | Sole | 2026-05-14 | ||||
| Mega WELLS FARGO & COMPANY/MN | $37,647,438 | 0.21% | 117,012 | Shares | Defined | 2026-05-11 | ||||
| Mega California Public Employees Retirement System Pension | $37,426,083 | 0.21% | 116,324 | Shares | Sole | 2026-05-06 | ||||
| Small Paloma Partners Management Co | $36,678,360 | 0.20% | 114,000 | Put | Defined | 2026-05-15 | ||||
| Small Newbrook Capital Advisors LP | $36,351,793 | 0.20% | 112,985 | Shares | Sole | 2026-05-15 | ||||
| Small ThornTree Capital Partners LP | $36,273,289 | 0.20% | 112,741 | Shares | Sole | 2026-05-15 | ||||
| Large Driehaus Capital Management LLC | $33,461,603 | 0.18% | 104,002 | Shares | Sole | 2026-05-15 | ||||
| Large FEDERATED HERMES, INC. | $33,108,652 | 0.18% | 102,905 | Shares | Defined | 2026-05-11 | ||||
| Large Holocene Advisors, LP | $32,728,679 | 0.18% | 101,724 | Shares | Sole | 2026-05-15 | ||||
| Small Webs Creek Capital Management LP | $32,685,566 | 0.18% | 101,590 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $32,278,887 | 0.18% | 100,326 | Shares | Sole | 2026-05-15 | ||||
| Mega JENNISON ASSOCIATES LLC | $32,008,625 | 0.18% | 99,486 | Shares | Defined | 2026-05-06 | ||||
| Mega JANE STREET GROUP, LLC | $30,887,040 | 0.17% | 96,000 | Call | Defined | 2026-05-12 | ||||
| Mid COMMUNITY TRUST & INVESTMENT CO | $30,689,832 | 0.17% | 73,763 | Shares | Sole | 2026-07-08 | ||||
| Mid Brevan Howard Capital Management LP | $30,458,804 | 0.17% | 94,669 | Shares | Defined | 2026-05-15 | ||||
| Mega ENVESTNET ASSET MANAGEMENT INC | $30,419,873 | 0.17% | 94,548 | Shares | Sole | 2026-05-04 | ||||
| Mega JANE STREET GROUP, LLC | $30,229,402 | 0.17% | 93,956 | Shares | Defined | 2026-05-12 | ||||
| Small Legacy Advisors, LLC | $30,228,438 | 0.17% | 93,953 | Shares | Sole | 2026-05-05 | ||||
| Large Trexquant Investment LP | $29,636,114 | 0.16% | 92,112 | Shares | Sole | 2026-05-15 | ||||
| Mega Legal & General Group Plc | $29,555,678 | 0.16% | 91,862 | Shares | Defined | 2026-05-08 | ||||
| Large SEI INVESTMENTS CO | $28,669,929 | 0.16% | 89,109 | Shares | Sole | 2026-05-13 | ||||
| Large Alyeska Investment Group, L.P. | $28,147,745 | 0.16% | 87,486 | Shares | Sole | 2026-05-15 | ||||
| Mega ALLIANCEBERNSTEIN L.P. | $27,684,118 | 0.15% | 86,045 | Shares | Defined | 2026-05-15 | ||||
| Large Quantinno Capital Management LP | $27,150,673 | 0.15% | 84,387 | Shares | Sole | 2026-05-15 | ||||
| Mid COOPER CREEK PARTNERS MANAGEMENT LLC | $26,931,568 | 0.15% | 83,706 | Shares | Sole | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $26,736,594 | 0.15% | 83,100 | Call | Defined | 2026-05-15 | ||||
| Mid LGT Group Foundation Endowment | $26,115,313 | 0.14% | 81,169 | Shares | Defined | 2026-04-28 | ||||
| Mega LPL Financial LLC | $26,011,713 | 0.14% | 80,847 | Shares | Sole | 2026-05-06 | ||||
| Large TORONTO DOMINION BANK Bank | $25,747,243 | 0.14% | 80,025 | Shares | Defined | 2026-05-15 | ||||
| No holders match your search. | ||||||||||