Aaron Erter

Aaron Erter leads James Hardie Industries, the world's largest manufacturer of fiber cement building products. Originally an Australian company, James Hardie now generates the majority of its revenue in North America, where it holds approximately 90% share of the fiber cement siding market. The company's products — exterior siding, trim, backer board, and panels — are taking share from traditional materials like vinyl and wood due to superior durability, fire resistance, and design versatility. James Hardie's growth story is fundamentally a material conversion story: fiber cement currently represents only about 20% of the total North American siding market, meaning there is a long runway for share gains against vinyl (which still dominates at roughly 30%) and wood. Each percentage point of conversion from vinyl to fiber cement represents hundreds of millions of dollars in addressable market. The company has invested in manufacturing capacity, color technology, and brand building (Hardie brand recognition among contractors is exceptionally high). Erter's execution on manufacturing capacity expansion, material conversion rates, pricing power, and new product innovation are the primary drivers of James Hardie's stock price. The company's fortunes are closely tied to US housing market activity — both new construction and repair & remodel — making housing starts and existing home sales critical leading indicators.