MTZ

MASTEC INC

Industrials · Construction · CORAL GABLES, FL · CIK 0000015615

The 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.

Ownership

Who holds MASTEC INC — from fund N-PORT and institutional 13F filings · N-PORT 2026Q1 · 13F 2026-03-31

499
funds hold it
2 of 36
superinvestors hold it
$6.32B
fund-held value
3
bond issues held by funds

Top fund holders

Fund% of fundValue
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

Stephen MandelNEW
Lone Pine Capital
3.9%
Daniel LoebDECREASED -65.4%
Third Point
4.9%

Share of each manager's reported 13F portfolio.

Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.

15 years of MASTEC INC's financials

Income statement, balance sheet and cash flow across 15 years, every filing with its disclosures, and each number traceable to the filing it came from — free with an account, no card required.

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