Astronics vs. Heico: Which Aerospace Services Stock Offers More Upside?

Aerospace service providers Astronics (ATRO) and HEICO (HEI) are poised for growth driven by increasing global air traffic, aging aircraft, and higher defense spending, with both reporting strong Q2/Q3 2025 sales increases, though facing headwinds from persistent supply chain disruptions and tariffs. While HEI posted robust sales growth of 18% in its Flight Support Group and 7% in Electronic Technologies, and holds a larger cash position, ATRO is presented as a more attractive investment due to its significantly lower forward P/E of 21.55x compared to HEI's 61.87x, superior Return on Equity of 22.89%, and lower leverage. ATRO has also substantially outperformed HEI in stock performance over the past year, despite HEI's higher projected sales growth.

Analysis

The aerospace services sector is experiencing robust demand driven by synergistic tailwinds from rebounding global air passenger traffic, an aging global fleet requiring aftermarket services, and elevated geopolitical tensions boosting defense budgets. Both Astronics (ATRO) and HEICO (HEI) are direct beneficiaries, exhibiting positive growth trajectories. HEICO demonstrates superior top-line momentum, with its Flight Support Group reporting 18% sales growth and a projected 14% increase in total sales for fiscal 2025. In contrast, Astronics reported a more modest 3.3% year-over-year sales increase in Q2 2025 but showed strength in key segments like commercial transport (+13%) and military sales (+11%), with Zacks consensus estimating a significant 46.8% EPS improvement for 2025. Despite HEI's stronger revenue growth, ATRO presents a more compelling financial profile based on efficiency and valuation. ATRO operates with lower leverage (37.0% debt-to-capital vs. HEI's 40.6%), generates a higher Return on Equity (22.9% vs. HEI's 16.3%), and trades at a substantial discount with a forward P/E of 21.55x compared to HEI's 61.87x. This fundamental strength is reflected in ATRO's 111.9% stock price surge over the past year, significantly outpacing HEI's 20.5% gain. Both companies face near-term risks from persistent supply-chain disruptions impacting OEM production rates and the potential effects of U.S. import tariffs.

Key Decisions for Investors

• Given Astronics' significant valuation discount, superior ROE, lower leverage, and strong recent stock performance, investors may find ATRO to be a more attractive vehicle for exposure to aerospace and defense sector growth.
• Investors holding HEICO should be aware of its premium valuation (61.87x forward P/E) and lower capital efficiency relative to ATRO, weighing these factors against its strong top-line sales growth and market position.
• It is critical to monitor OEM production guidance from Boeing and Airbus, as ongoing supply chain issues constraining aircraft deliveries represent a primary near-term risk to revenue growth for both component suppliers.
• For investors seeking a relative value play, a pair trade of long ATRO and short HEI could be considered to capitalize on the divergence in valuation and efficiency metrics while maintaining exposure to the sector's positive long-term drivers.