Sterling Infrastructure

Sterling Infrastructure is a Texas-based specialty civil-construction company that has quietly transformed itself from a generic roads-and-bridges contractor into one of the cleanest pure-plays on US data-center construction. The 2024-2025 strategic shift was deliberate: Sterling sold its Texas highway construction division (Reece) in early 2024 and reinvested the proceeds into its E-Infrastructure Solutions segment, which now accounts for nearly 60% of revenue. E-Infrastructure does the pre-vertical work for hyperscale data centers: site preparation, mass-grading, foundation work, electrical-substation pads, and water-management infrastructure. The customer list reads like a who's-who of AI capex: Meta, Microsoft, Google, Amazon, Oracle, and CoreWeave. The 2026 story is the operating leverage from sustained AI-data-center demand. FY2025 revenue grew 18% to roughly 2.2 billion USD, with E-Infrastructure growing 35%. Backlog at year-end 2025 stood at a record 1.9 billion USD with average duration extending to 9 months. FY2026 guidance is for 25-30% organic growth in E-Infrastructure with consolidated EBIT margin expanding to roughly 15% (versus 11% in 2024).

The smart-money base on Sterling has rebuilt aggressively through 2024-2025 as the AI-capex thesis became broadly visible. Top active institutional holders include FMR (Fidelity), BlackRock, and Renaissance Technologies. Joel Greenblatt's Gotham Asset Management initiated a position in mid-2025, and Driehaus Capital Management has been a multi-year holder. CEO Joseph Cutillo has been at the helm since 2019 and has executed the deliberate refocus toward E-Infrastructure with credibility on conference calls. The bear camp focuses on three structural concerns: (1) AI-data-center capex sustainability beyond 2027 if model training compute demands plateau, (2) customer concentration in the top 5 hyperscalers (likely above 60% of E-Infrastructure revenue), and (3) valuation has expanded materially — the easy upside from the 2023-2024 period is gone.

Sterling trades at 32× forward earnings, 4.5× forward EV/revenue, and 18× forward EV/EBITDA. All three multiples are elevated relative to general civil construction but justified by the AI-capex-driven E-Infrastructure exposure. Free-cash-flow yield is approximately 3% in 2026 with rapid trajectory toward 5-6% by 2028. Bull case (Hyperscaler capex continues to grow through 2028, geographic expansion succeeds, margin reaches 17%): USD 350. Base case (Steady 25% E-Infrastructure growth, margin to 15%): USD 265. Bear case (Hyperscaler capex pauses in 2027, multi-quarter backlog burndown): USD 145.

1. August 2026: Q2/2026 earnings — first full quarter benefiting from the early-2026 Meta/Microsoft project ramp; watch backlog growth and E-Infrastructure margin.
2. November 2026: Q3/2026 earnings — visibility into 2027 backlog from hyperscaler 2027 capex guidance announcements (typically Q3 earnings season).
3. Throughout 2026: Major hyperscaler-capex-revision announcements — either direction has direct impact on STRL backlog forecast.

Sterling is in my US small-cap AI-infrastructure sleeve at 1.2% portfolio weight. The thesis is one of the cleanest in the AI-capex picks-and-shovels space: hyperscaler capex must flow through site preparation before vertical construction, and Sterling has structurally positioned itself in the right markets at the right time. Where I'd be cautious for new entries: the valuation is rich and the customer concentration is real. I treat this as a 2-3 year position with built-in expectation of trimming if hyperscaler 2027 capex guidance shows meaningful slowdown. Compared with adjacencies like Quanta Services (broader electrical infrastructure focus) and MasTec (more telecom and utility), Sterling offers the most concentrated data-center site-work exposure but with corresponding cyclical risk if AI capex normalises.