James Hardie Industries (JHX) concentration risks

The company's disclosed concentration profile combines a supplier dependency and a customer dependency, both with distinct character. On the supply side, the filing discloses that James Hardie relies on a single supplier for certain critical capped compounds and does not currently have arrangements in place for a redundant or second-source supply. By disclosed size this is a high-share exposure; the character is dependency — the absence of a fallback means an operational disruption at that supplier could affect production with limited short-term alternatives. This is the more idiosyncratic of the two exposures because it hinges on a single external party rather than broad market dynamics. On the customer side, the largest customer accounted for approximately 11% of net sales for the year ended March 31, 2026 — a low share by disclosed size. The character is dependency, though the limited weight of that relationship in the revenue mix means any shift in purchasing patterns at that customer would have a contained impact on consolidated sales. Together, the profile is asymmetric: the supplier risk is the dominant concern given its high disclosed size and the lack of redundancy, while the customer exposure is contained. Monitoring the capped compounds supply relationship is the more material near-term consideration for investors.

For the engine’s reasoning on JHX’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.

Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.