Sterling Infrastructure, Inc. (STRL Quick QuoteSTRL - Free Report) presents an interesting investment opportunity as upward earnings estimate revisions and an attractive valuation contrast with its recent stock price weakness. Strong demand for mission-critical infrastructure, expanding data center investments and improving earnings visibility support its growth outlook. However, margin pressures and execution challenges remain important considerations.

Over the past 30 days, the Zacks Consensus Estimate for Sterling's 2026 earnings per share (EPS) has increased 2.1% to $20.45 from $20.02. The revised estimate suggests 88% year-over-year growth, while the consensus estimate for revenues indicates an 81.5% increase. The momentum is expected to continue into 2027, with the consensus estimate projecting 30.3% EPS growth and 23% revenue growth.

STRL’s EPS Estimate Revision Trend

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Analyst sentiment is also favorable. Sterling carries an average brokerage recommendation (ABR) of 1.20, with nine of the 10 brokerage firms assigning a Strong Buy recommendation.

Sterling's Discounted Valuation Offers an Opportunity

Sterling currently trades at a forward 12-month price-to-earnings (P/E) ratio of 11.77X, significantly below the Zacks Engineering - R and D Services industry’s 20.51X and its five-year median of 18.51X. Its five-year valuation range of 6.49X-64.83X further highlights the stock's relatively inexpensive positioning.

STRL Valuation vs Industry - P/E (F12M)

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The discount comes amid considerable selling pressure. Over the past three months, STRL shares have plunged 44.8%, underperforming the Zacks Engineering - R and D Services industry's 20% decline, the Zacks Construction sector's 10.9% fall and the S&P 500 Index's 3% decrease.

STRL Price Performance vs Industry (3-Month)

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While the correction raises concerns about investor confidence, the combination of lower valuation multiples and improving earnings expectations suggests that Sterling's growth potential may not be fully reflected in its share price.

Sterling's Growth Prospects Remain Encouraging

Sterling's expanding presence in mission-critical infrastructure remains central to its investment appeal. Growing investments in data centers, semiconductor fabrication facilities, advanced manufacturing and energy infrastructure are creating substantial demand for its site development and electrical services.

The company's third-quarter 2026 results demonstrate this strength. Revenues increased 127% year over year to $1.56 billion, including approximately 70% organic growth. Adjusted EPS increased 118% to $7.58, while adjusted EBITDA advanced 117% to $337.8 million.

E-Infrastructure Solutions remains Sterling's primary growth engine. Segment revenues surged 212% to $1.30 billion, supported by strong demand for large-scale data center and semiconductor projects. Site Development revenues increased 133%, reflecting expanding activity across key markets.

The CEC electrical business further strengthens Sterling's capabilities in mission-critical construction. CEC generated approximately $426 million in third-quarter revenues, representing 305% pro forma year-over-year growth. Management now believes the business could exceed $1 billion in revenues for 2026.

Sterling's growing backlog also provides significant visibility. Combined backlog reached $6.14 billion at September 2026-end, up 78% year over year. Including additional project phases under design, total scoped work approached $8 billion, increasing approximately 90%.

This expanding opportunity pipeline supports management's confidence in sustained growth beyond 2026, particularly as large data center campuses progress through multiple development phases.

Higher Guidance and Financial Strength Support STRL

Following its strong third-quarter performance, Sterling raised its full-year 2026 guidance. Management now expects revenues between $4.63 billion and $4.73 billion, with adjusted EPS of $21.70-$21.96 and adjusted EBITDA of $970-$981 million.

Beyond 2026, management targets annual organic profitability growth of 20%-30% over the next several years, with acquisitions potentially accelerating the pace. It also expects 2027 to meet or exceed its organic growth framework.

Sterling's financial position provides additional flexibility. Operating cash flow increased 68% to $427.1 million during the first nine months of 2026. The company ended September with approximately $217 million in cash against $95 million in debt.

The company’s expanded $1.5 billion revolving credit facility, maturing in July 2031, supports future investment and acquisition opportunities. These resources should help Sterling strengthen its presence in attractive markets while maintaining financial flexibility.

Challenges Could Limit Sterling's Upside

Despite its encouraging prospects, Sterling faces margin-related challenges. Its adjusted EBITDA margin declined approximately 100 basis points year over year to 21.6% in the third quarter, primarily reflecting the growing contribution of CEC's relatively lower-margin electrical operations.

Management expects CEC's noncore activities to weigh on its full-year 2026 operating margin by approximately 160 basis points. Although Sterling targets 300-500 basis points of margin improvement at CEC over 18-24 months, realizing these benefits depends on successful operational improvements and the planned exit from noncore work.

Seasonal weather-related disruptions could also affect fourth-quarter profitability. Furthermore, rapidly expanding project activity requires additional skilled workers, equipment and operational capacity, potentially creating execution challenges.

Weakness in other businesses remains concerning. Building Solutions' third-quarter revenues declined 5.4%, reflecting softer residential construction activity. Management expects housing market conditions to remain challenging into 2027.

Transportation Solutions also recorded a 3.1% revenue decline as resources shifted toward higher-return E-Infrastructure projects. Although this strategy supports profitability, it could limit growth in Sterling's traditional infrastructure operations.

How Sterling Compares With Industry Competitors

Quanta Services, Inc. (PWR Quick QuotePWR - Free Report) , MasTec, Inc. (MTZ Quick QuoteMTZ - Free Report) and Granite Construction Incorporated (GVA Quick QuoteGVA - Free Report) compete with Sterling across electrical infrastructure, energy construction, site development and transportation markets.

Over the past three months, Quanta shares lost 10.5%, MasTec plunged 35.1%, while Granite gained 2.9%. All three outperformed Sterling's 45.8% decline, highlighting the latter's substantial recent selling pressure.

STRL Price Performance vs Peers (3-Month)

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However, Sterling appears more attractively valued. Quanta Services trades at a forward P/E of 29.98X, reflecting a substantial premium to Sterling's 11.77X. MasTec trades at 15.75X, while Granite Construction commands 14.36X.

Quanta Services benefits from expanding electrical infrastructure investment, while MasTec has exposure to power delivery, communications and energy construction. Granite Construction focuses more heavily on transportation and heavy civil infrastructure.

Although Quanta Services, MasTec and Granite Construction have demonstrated stronger recent share-price performance, Sterling's lower valuation and improving earnings estimates offer a compelling relative investment case.

Is STRL Stock Worth Buying Now?

Sterling's improving earnings estimates, expanding mission-critical infrastructure opportunities and strong backlog provide a solid foundation for long-term growth. Its discounted valuation offers additional appeal following the steep stock price correction.

Although CEC-related margin pressures, capacity constraints and residential market weakness warrant attention, favorable earnings revisions and management's raised outlook support optimism.

With a Zacks Rank #2 (Buy), Sterling appears well-positioned for investors seeking exposure to infrastructure growth at a relatively attractive valuation. The combination of earnings momentum and a discounted forward P/E makes the stock worth considering despite near-term challenges. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.