Key Takeaways Astronics posted stronger stock performance than Heico, rising 111.9% versus HEI's 20.5% in the past year.ATRO trades at a lower forward P/E of 21.55X versus HEI's 61.87X, highlighting a more attractive valuation.Astronics holds lower leverage and higher ROE than Heico, with 22.89% ROE versus HEI's 16.29%.Rising air passenger traffic worldwide, driving global fleet size, along with ageing aircraft pushing up demand for aftermarket services, is boosting demand for aerospace service stocks like ...