MASTEC INC
Ticker: MTZIndustrialsConstructionThe business
MasTec, Inc. (NYSE: MTZ) is a leading North American infrastructure engineering and construction company with over 95 years of operating history. The company maintains approximately 36,000 employees across 810 locations and operates primarily throughout the United States and Canada. MasTec provides integrated, solutions-based services across communications, energy, utility, and other critical infrastructure sectors, operating under the MasTec service mark and ranking among the top five contractors in Engineering News-Record's Top 400 Contractors list.
The company operates through five reportable segments: Communications, Clean Energy and Infrastructure, Power Delivery, Pipeline Infrastructure, and Other. The Communications segment performs engineering, construction, maintenance, and customer fulfillment activities for wireless and wireline/fiber networks, data center buildout, and install-to-the-home services. The Clean Energy and Infrastructure segment installs and constructs power generation facilities from renewable sources including wind, solar, and biomass, alongside heavy civil infrastructure services for roads, bridges, and rail, plus environmental remediation services. The Power Delivery segment engineers, constructs, and maintains transmission and distribution infrastructure, including grid modernization and emergency restoration services. The Pipeline Infrastructure segment provides engineering, construction, and maintenance services for natural gas, water, and carbon capture sequestration pipelines, along with pipeline integrity services. The Other segment includes equity investees and small international business units.
MasTec's business model centers on providing labor-based construction services under multi-year master service agreements and project-specific contracts. The company serves a diversified customer base including major communications providers, utilities, power generators, data center operators, and government entities. The company's competitive strengths include its diverse customer relationships, reputation for technical expertise and reliable service, extensive North American geographic footprint, ability to rapidly deploy resources across multiple end-markets, and experienced management team. MasTec has pursued significant transformation since 2021, including substantial business combination activity to expand scale and capacity in renewable energy, power delivery, heavy civil, and telecommunications services. The company website is mastec.com.
- Sector
- Industrials
- Industry
- Construction
- HQ
- CORAL GABLES, FL
- FY end
- 12-31
- CIK
- 15615
- SIC
- 1623
Ownership
Who holds MASTEC INC — across funds, superinvestors and bonds · N-PORT 2026Q1 · 13F 2026-03-31
Top fund holders
| Fund | % of fund | Value |
|---|---|---|
| iShares Core S&P Mid-Cap ETF IJH · iShares Trust | 0.62% | $653.40M |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VTI · VANGUARD INDEX FUNDS | 0.03% | $644.13M |
| VANGUARD SMALL-CAP INDEX FUND VB · VANGUARD INDEX FUNDS | 0.28% | $468.25M |
| First Trust RBA American Industrial Renaissance ETF AIRR · First Trust Exchange-Traded Fund VI | 4.65% | $389.57M |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VBK · VANGUARD INDEX FUNDS | 0.68% | $261.97M |
Superinvestors in MASTEC INC
Share of each manager's reported 13F portfolio.
Bonds held by funds
Funds report holding 3 issues of MASTEC INC's debt, $466.65M at fund-held market value — what funds hold, not the company's debt outstanding. Weighted-average coupon 5.30%, maturing 2028–2029.
| Issue | Coupon | Matures | Funds | Fund-held |
|---|---|---|---|---|
| MasTec, Inc. | 5.900% | 2029-06-15 | 93 | $231.24M |
| MasTec Inc | 4.500% | 2028-08-15 | 47 | $211.51M |
| MasTec Inc | 6.625% | 2029-08-15 | 12 | $23.90M |
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
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