HEI vs AZO Comparison

Heico is an aerospace and defense supplier that focuses on creating replacement parts for commercial aircraft and components for defense products. In commercial aerospace, Heico is the largest independent producer of replacement aircraft parts. In the defense market, the company produces niche subcomponents used in targeting technology as well as simulation equipment, among other categories. It operates two segments: the flight support group and the electronic technologies group. Both supply the aerospace and defense sectors to different degrees. Heico is persistently acquisitive, focusing on companies in similar or adjacent markets that offer strong cash flow and profitable growth potential.

Founded in 1979, AutoZone is the largest US-based retailer of aftermarket automotive parts and accessories, operating over 7,600 stores and generating over $20 billion in fiscal 2026 sales. Beyond its primary home market (86% of total revenue), the company also maintains a growing presence in Mexico and Brazil. AutoZone caters to two core customer segments: do-it-yourself, which account for roughly two-thirds of its domestic sales, and commercial do-it-for-me customers, which represent the remainder.