Sterling's 120% EPS Beat Fuels Optimism but Premium Valuation Persists

What happened

Sterling Infrastructure's Q1 2026 adjusted EPS surged 120% year-over-year, driven by record revenue and backlog as E-Infrastructure demand continues to accelerate. The company raised its full-year outlook, reinforcing the narrative of strong AI/data-center tailwinds. However, the Zacks article glosses over the risks highlighted in the DeepValue report: the stock trades at ~36x trailing earnings and ~25x EV/EBITDA, levels that already price in sustained mid-20% margins. The backlog growth is partly acquisition-related (CEC), and percentage-of-completion accounting leaves earnings vulnerable to future estimate revisions. While the beat is impressive, it does not resolve the core concern that the current valuation embeds assumptions that leave limited upside and meaningful downside if AI capex moderates or margins normalize.

Implication

The 120% EPS beat and raised guidance reduce the probability of immediate earnings disappointment, offering temporary support to the stock. However, our base case valuation of $340 implies shares are already pricing in optimistic scenarios, with limited upside to bull case of $430. The thesis hinges on sustained high margins and AI capex growth; any signs of a slowdown or margin compression could trigger multiple contraction. Investors should use any strength to reduce positions, waiting for a pullback closer to $320 for a more attractive entry. The upward guidance revision does not change our POTENTIAL SELL rating, as it merely confirms the market's high expectations rather than creating a new margin of safety.

Thesis delta

The positive Q1 results and raised guidance confirm that Sterling remains in the sweet spot of the AI infrastructure cycle, reducing near-term downside risk. However, the beat was largely expected by the market, and the stock's 89% run over the past year already discounts this momentum. The core thesis shift is limited: the risk of multiple compression from stretched valuations and potential normalization of margins remains intact, keeping our cautious stance until shares offer a wider margin of safety.