KLA vs Applied Materials: Micron Exposure Depends on Which Side You Measure
September 14, 2026
Altsets
Research by Altsets Research
KLA is more dependent on Micron by supplier revenue share, 4.59% versus 2.96%, while Applied Materials has the larger relationship size and the larger share of Micron's cost base.
Data used:Altsets Supply Chain Intelligence: 90k+ entities, 400k+ relationships, 20+ years of history.
Key findings
- Micron represents 4.59% of KLA revenue versus 2.96% of Applied Materials revenue in the supplied data, so KLA has the greater supplier-side customer concentration.
- Applied Materials has the larger relationship size at 990M USD versus 693M USD and the larger Micron cost share at 3.84% versus 2.84%, producing a ranking reversal depending on whose economics are being measured.
KLA is more dependent on Micron by supplier revenue share, but Applied Materials is the larger relationship from Micron's side. In the supplied Altsets data, Micron represents 4.59% of KLA revenue versus 2.96% of Applied Materials revenue. At the same time, Applied Materials has a 990M USD relationship size and 3.84% of Micron's cost base, compared with 693M USD and 2.84% of Micron's cost base for KLA.
The ranking flips depending on whose economics you are asking about
If the question is "which supplier is more dependent on Micron as a customer?", KLA ranks higher because 4.59% of KLA revenue is associated with Micron compared with 2.96% for Applied Materials. If the question is "which relationship is larger to Micron?", Applied Materials ranks higher by both absolute relationship size and Micron cost percentage.
That is exactly why one generic relationship score can lose information. The two directional percentages have different denominators and answer different questions. KLA's smaller 693M USD relationship can matter more to KLA's own revenue base than Applied Materials' larger 990M USD relationship matters to Applied Materials' revenue base. Applied Materials can simultaneously matter more inside Micron's displayed cost structure.
A Micron spending slowdown would not create the same supplier-side exposure ranking as a Micron cost screen
An investor worried about Micron reducing purchases would naturally care about the supplier revenue percentage. On that dimension, KLA's 4.59% indicates more direct customer concentration to Micron than Applied Materials' 2.96%. The supplier-side question is about how much of each vendor's own business is tied to the customer.
An investor studying Micron's production economics would care more about the customer-side cost percentage. Applied Materials is associated with 3.84% of Micron's cost base versus KLA at 2.84%. The direction of the investment question changes which relationship looks larger, even though the underlying companies have not changed.
The public filings explain why both belong in the semiconductor-equipment conversation
KLA and Applied Materials are both major semiconductor-equipment companies, but their product portfolios and customer roles are not identical. Their SEC filings describe businesses spanning process-control, manufacturing, and semiconductor production equipment. The Altsets data is useful because it does not require the investor to treat those companies as interchangeable merely because both sell into semiconductor manufacturing.
The relationship figures identify a concrete asymmetry worth researching. KLA has the higher Micron customer concentration from its own revenue perspective, while Applied Materials has the larger quantified relationship into Micron's cost base. Product mix, order timing, capital spending, and the specific equipment Micron purchases determine what happens next.
This is a better example of relative exposure than comparing relationship dollars alone
If the investor only compared 990M USD with 693M USD, Applied Materials would look unambiguously more exposed. That conclusion would be incomplete. The revenue percentages show that the smaller KLA relationship occupies a larger share of KLA's business.
The reverse mistake is also possible. Looking only at supplier revenue share would make KLA appear more important in every sense, even though Applied Materials carries the larger displayed Micron cost percentage and larger absolute relationship. The dataset is valuable precisely because it preserves both views instead of compressing them into one number.
The difference changes which catalyst deserves more attention
The ranking reversal becomes useful when Micron changes spending or production plans. A Micron capex reduction can matter to both equipment vendors, but the supplied data gives two different reasons to watch them. KLA has the larger dependence on Micron relative to its own revenue base, so a sustained reduction in Micron purchasing deserves more attention inside the KLA customer-concentration thesis. Applied Materials has the larger displayed relationship into Micron's cost structure, so it deserves more attention when the investor is trying to understand which vendor relationships occupy more of Micron's manufacturing economics.
Those are not contradictory conclusions. They are two views of the same commercial connection. One asks how important Micron is to the supplier. The other asks how important the supplier is to Micron. Keeping those directions separate prevents a common mistake in supply-chain research, where the largest dollar relationship is assumed to be the most concentrated relationship for both companies.
The comparison can also expose different kinds of downside
If Micron weakens, KLA can face a larger customer-concentration question even though its absolute relationship is smaller. If a specific Applied Materials product becomes constrained or more expensive, Micron can face a larger displayed cost exposure even though Micron represents a smaller share of Applied Materials revenue. A single relationship therefore creates different downside channels depending on which company is being valued.
That matters for stock research because the same Micron event can belong in two different models. For KLA, the investor may focus more on customer demand and revenue sensitivity. For Micron, the Applied Materials relationship can belong more naturally in production-cost, capex, or supplier-dependence analysis. The Altsets metrics do not decide the final impact, but they tell the investor which side of the relationship should carry more weight in each thesis.
The conclusion is that "more exposed" needs a direction
KLA is more exposed to Micron as a customer of KLA, while Applied Materials is more material inside Micron's displayed cost base. The supplied data therefore produces a real ranking reversal: 4.59% versus 2.96% on supplier revenue, but 2.84% versus 3.84% on Micron cost share. The correct answer depends on which company's economics the investor is trying to understand.
The relationship-size versus relative-exposure guide explains why absolute size and directional percentages answer different questions. The rank suppliers guide explains how to choose the metric that matches the research job.
For relationship definitions and evidence limits, read the Altsets methodology.