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Sterling Infrastructure, Inc. (NASDAQ: STRL)—often called Sterling Construction—does not have one perfect publicly traded peer. Its three businesses span data-center and industrial site development, transportation infrastructure, and residential concrete work. Quanta Services is a useful scale comparison, but its utility- and power-heavy mix is quite different. A sound comparison looks at business mix, geography, profitability, acquisitions, backlog definitions, and the kinds of projects each company pursues—not revenue alone.
What Sterling Infrastructure does
Sterling operates through three segments, each serving different customers and markets. The company says it works primarily across the Southern, Northeastern, Mid-Atlantic, and Rocky Mountain regions, as well as the Pacific Islands. Sterling’s 2025 Form 10-K describes its operations and market positioning.
| Segment | Work and end markets |
|---|---|
| E-Infrastructure Solutions | Large-scale site development and mission-critical electrical services for data centers, semiconductor fabrication, manufacturing, distribution centers, warehousing, and power generation. |
| Transportation Solutions | Highways, roads, bridges, airports, ports, rail, and storm drainage. |
| Building Solutions | Residential and commercial concrete foundations and other concrete work, plumbing, and surveying, including work tied to new single-family home construction. |
Sterling has described its target as a middle market: projects too large for small local contractors but too small for the largest national and international firms. That position is not protected from competition; Sterling’s 10-K warns that weaker market conditions could draw contractors from both ends of the market toward its projects, increasing bid pressure.
Which publicly traded companies are relevant comparisons?
There is no single peer group that matches all three Sterling segments. Comfort Systems USA’s 2025 annual report names Comfort Systems USA, EMCOR Group, IES Holdings, MasTec, MYR Group, Primoris Services, Quanta Services, and Sterling Infrastructure among large publicly traded U.S. construction-services companies. It also notes that competition varies by geography and that many services are local or regional. This is a useful list of possible comparisons—not proof that every company competes directly with Sterling on every project. Comfort Systems USA’s 2025 annual report
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Among the companies named, Quanta Services is especially useful for comparing infrastructure scale and contract visibility. It is not a like-for-like match: its business mix and markets differ substantially from Sterling’s.
Sterling and Quanta: scale is not the same as similarity
Quanta’s work spans utility, power generation, load center, communications, pipeline, and energy markets. The company estimated its 2025 revenue mix as 70% utility and power, 17% energy and other, and 13% technology, manufacturing, and communications. Its investor-relations page reports fiscal 2025 revenue of $28.5 billion, net income of $1,028.4 million, and adjusted EBITDA of $2,876 million for the year ended December 31, 2025. Quanta Services investor relations
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Quanta’s February 19, 2026 results release reported consolidated 2025 revenue of $28.48 billion and total backlog of $43.98 billion at December 31, 2025. Sterling reported $2.490 billion in 2025 revenue. Those figures show the difference in reported scale, but revenue alone does not show which company is more comparable: Sterling’s business spans site development, transportation work, and building services, while Quanta’s reported mix is weighted toward utility and power. Quanta’s 2025 results release
Quanta’s CEO, Duke Austin, described the company’s results and backlog as follows: “Quanta closed 2025 with another strong quarter, delivering double-digit year-over-year growth in revenue and adjusted EBITDA, while achieving record fourth-quarter and full-year results across multiple key financial metrics. Backlog was exceptionally strong at a record $44.0 billion, reflecting accelerating demand in our Electric segment and sustained activity across our end markets, which positions us well heading into 2026.” This is company commentary, not an independent assessment.
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How to compare contractors beyond revenue
1. Match the work and end markets
Start with what each contractor builds and who pays for it. Sterling’s transportation projects may be exposed to public infrastructure programs, while its E-Infrastructure segment serves private investment in data centers, manufacturing, semiconductors, and related facilities. Building Solutions has a distinct exposure to residential construction. A contractor focused on electric utilities, pipelines, or building mechanical systems may share some customers or project ecosystems without having the same revenue drivers.
2. Account for geography and customer exposure
Construction-services competition and opportunity can vary by region. Compare where a company operates, whether its work is concentrated among a limited set of customers or markets, and whether its projects depend on public agencies, utilities, or private capital spending. A national footprint does not by itself mean that a contractor competes with Sterling in every local market.
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3. Read revenue and profitability with acquisition effects in view
Sterling’s 2025 revenue requires a specific consolidation caveat. The company deconsolidated Road and Highway Builders (RHB) beginning January 1, 2025, so RHB revenue is not included in Sterling’s 2025 consolidated revenue. Sterling also acquired CEC Facilities Group on September 1, 2025, adding a specialty electrical and mechanical contractor to E-Infrastructure Solutions. As a result, an unadjusted year-over-year revenue comparison can reflect changes in the consolidation perimeter as well as operating performance. Sterling’s 2025 Form 10-K
Profitability comparisons also need consistent measures and periods. Quanta reports net income and adjusted EBITDA in its 2025 investor materials; Sterling’s 2026 guidance is for adjusted EBITDA, not realized results. Do not treat margins or earnings as directly comparable unless the calculation, reporting period, and treatment of acquisitions and adjustments are aligned.
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4. Check what “backlog” includes
Backlog can offer a view of future work, but companies may define it differently, and projects do not necessarily convert into revenue on the same timetable. Sterling’s RHB backlog is excluded from consolidated backlog beginning December 31, 2024. Quanta reported $43.98 billion of total backlog at December 31, 2025. These reported figures have different businesses and may not represent the same contract scope or conversion profile.
Sterling’s second-quarter 2026 release said mission-critical projects—including data centers, manufacturing, and semiconductor facilities—represented 92% of E-Infrastructure backlog at quarter-end. It also described a more-than-$7.0 billion pool combining signed backlog, unsigned awards, and future-phase opportunities. That combined opportunity pool is not the same measure as signed backlog. Sterling’s second-quarter 2026 results
5. Separate public infrastructure from private investment cycles
Sterling participates in both public works, especially through Transportation Solutions, and private-sector construction and site development through E-Infrastructure and Building Solutions. Quanta’s utility and power exposure ties it to a different set of customers and investment needs, even where demand for electricity, data centers, or industrial facilities creates adjacent opportunities. A peer comparison should identify these drivers rather than assume that all infrastructure contractors respond to the same spending cycle.
6. Compare scale and project size in context
Large consolidated revenue can indicate broader operations, but it does not establish that a company pursues the same-size contracts or serves the same markets. Sterling’s stated middle-market positioning is a useful starting point; compare each peer’s disclosed project types, geographic reach, and segment mix before drawing conclusions about scale or direct competition.
Sterling’s 2026 outlook: guidance, not results
In its second-quarter 2026 release, Sterling raised full-year guidance to revenue of $4.00 billion to $4.15 billion and adjusted EBITDA of $891 million to $916 million. These are management’s forecasts, not completed-year results. The same release’s opportunity-pool figure includes unsigned awards and future-phase opportunities alongside signed backlog, so it should not be read as guaranteed revenue.
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