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Sterling Infrastructure’s third-quarter 2026 results showed that its data-center-related growth is translating into sharply higher revenue, but the quarter also brought a lower E-Infrastructure operating margin than a year earlier. The company reported results on October 28, after an Investing.com preview said analysts expected $1.19 billion in revenue and $6.20 per share; those were pre-release estimates, not the reported outcome. Sterling reported $1.564 billion in revenue and diluted EPS of $6.92 under GAAP, and raised its full-year outlook.
The headline question is no longer whether Sterling would clear an earnings estimate: it has reported its quarter. The more useful question for investors and construction-industry observers is whether the company can keep converting large, complex project demand into delivered work while protecting profitability as its E-Infrastructure business scales.
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Sterling Infrastructure (NASDAQ: STRL) reported third-quarter revenue of $1.564 billion, up 127% year over year, net income of $214.9 million and GAAP diluted EPS of $6.92. Its adjusted diluted EPS was $7.58 and adjusted EBITDA was $337.8 million; Sterling identifies these as non-GAAP measures. The company’s earnings release is the source for the reported figures. The preview’s cited $6.20 expected EPS should not be treated as the company’s guidance or result, or compared without checking the basis of the analyst estimate.
What drove Sterling’s growth?
E-Infrastructure was the dominant contributor. The segment generated $1.303 billion in revenue—83% of company revenue—and reported 212% year-over-year growth. It provides large-scale site development and electrical services for data centers and other facilities, including semiconductor, manufacturing, distribution, warehousing and power-generation projects. Sterling’s quarterly filing describes demand drivers that include investment in data centers, semiconductor fabrication, advanced manufacturing and e-commerce facilities, amid cloud computing, AI applications and digital transformation.
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The growth figure needs context. Sterling said total revenue included 70% organic growth, while the E-Infrastructure business is also larger following its 2025 acquisition of CEC Facilities Group, a specialty electrical and mechanical contractor included in that segment. The current results therefore reflect both strong demand and a changed business scale and service mix—not a clean measure of like-for-like data-center construction alone.
Is the data-center boom improving profitability?
Revenue growth was exceptional, but the segment’s operating margin moved in the opposite direction year over year. E-Infrastructure’s Q3 operating margin was 22.6%, compared with 25.6% in the prior-year quarter, according to the earnings-release filing.
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That comparison is an important counterweight to the sales headline. A rapidly expanding segment can face a different mix of services, projects and acquired operations; the figures alone do not establish why the margin changed. Sterling CEO Joe Cutillo characterized the quarter as “another exceptional quarter,” citing adjusted net income growth of 119%, adjusted diluted EPS of $7.58, and revenue growth of 127%, including 70% organic growth. That is management’s assessment, not an independent conclusion about future margins.
How much work is secured—and how much is still prospective?
Sterling reported $4.14 billion of signed backlog as of September 30, up 61% year over year. Separately, management cited nearly $8 billion combining signed backlog, unsigned awards and next project phases in design, approximately 90% higher year over year. These are not interchangeable measures: only the first is signed backlog. The broader figure includes work at different commitment and planning stages, is not guaranteed future revenue, and excludes potential additional phases and expanded scopes, according to the company.
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For a contractor, backlog offers visibility into awarded work, but it does not mean every dollar becomes revenue in the next quarter. Timing depends on project phases and execution. Sterling’s figures make the distinction between contracted work and a wider pipeline especially important when assessing the scale of the opportunity.
What does the raised 2026 guidance imply?
Sterling raised its full-year 2026 guidance to revenue of $4.63 billion to $4.73 billion and adjusted diluted EPS of $21.70 to $21.96. These are management forecasts, not reported results or guarantees. They provide a forward-looking yardstick, but the company’s ability to meet them will depend on project delivery, the timing and mix of work, and profitability.
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The Investing.com preview also reported a data-center-sector spending figure of 73% year-over-year growth to an $85 billion annual pace. That is a figure attributed to the preview, not a Sterling metric or an independently verified market-wide statistic. The company’s own results are stronger evidence of its performance than a broad sector estimate.
The quarter supports a clear but qualified reading: Sterling is capturing substantial demand and has raised its outlook, while the E-Infrastructure margin decline is a signal to watch alongside future revenue and backlog conversion. Neither the growth figures nor the broader project pipeline alone establish whether STRL is attractively valued at any particular share price. Valuation requires current market data and assumptions beyond these earnings results.
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Frequently Asked Questions
Does Sterling build entire data centers?
The company describes E-Infrastructure as providing large-scale site development and electrical services for data centers and other facilities. That does not mean Sterling is responsible for constructing every part of each facility.
What does Sterling mean by adjusted diluted EPS?
It is a non-GAAP measure, distinct from diluted EPS calculated under generally accepted accounting principles. The company’s earnings release provides the appropriate reconciliation; the adjusted figure should not be treated as a substitute for GAAP EPS.
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Can one strong earnings quarter tell me whether STRL is a good investment?
No. A quarterly report can inform an investment analysis, but deciding whether the shares are attractive also requires a current share price, valuation assumptions, risk tolerance and other information not established by these results.
