Lam Research and Micron: Why 5.61% and 5.52% Tell Different Stories
July 20, 2026
Altsets
Research by Altsets Research
Altsets estimates the Lam Research to Micron relationship at 5.61% of Lam revenue, 1.2B USD, and 5.52% of Micron COGS, creating an unusually close two-sided percentage pattern.
Data used:Altsets Supply Chain Intelligence: 90k+ entities, 400k+ relationships, 20+ years of history.
Key findings
- The Lam Research to Micron relationship is estimated at 5.61% of Lam Research revenue, 1.2B USD in relationship size, and 5.52% of Micron COGS.
- The two displayed percentages differ by only 0.09 percentage points, but they use different denominators and are not a formal symmetry score.
- The relationship is economically visible from both directions and is useful for either customer read-through or supplier-event triage.
Lam Research is a meaningful upstream supplier to Micron, and the relationship matters on both sides. In the supplied Altsets data, Micron represents 5.61% of Lam Research revenue, the relationship size is 1.2B USD, and Lam Research accounts for 5.52% of Micron's cost base. That combination makes this more than a simple supplier mention: Micron is economically relevant to Lam, while Lam is also a material input relationship for Micron.
Not necessarily. The Lam Research and Micron Technology relationship looks balanced by percentage, but the two measures use different denominators and do not prove equal dependence. The displayed estimates are 5.61% of Lam Research revenue and 5.52% of Micron Technology cost of goods sold, with a 1.2B USD relationship size as of July 20, 2026.
The immediate conclusion is not that the companies are equally dependent on each other. The two percentages use different denominators. The useful conclusion is that this relationship is economically visible from both sides at roughly the same displayed percentage scale. That makes Lam Research and Micron a good example of why directional supply-chain metrics should be read together rather than collapsed into one number.
The relationship in one row
| Relationship | Supplier revenue | Relationship size | Customer COGS |
|---|---|---|---|
| Lam Research to Micron Technology | 5.61% | 1.2B USD | 5.52% |
The percentages differ by only 0.09 percentage points. Numerically, they are close. Economically, they answer different questions.
Why 5.61% and 5.52% are not the same thing
The 5.61% supplier revenue estimate measures Micron's importance inside Lam Research's revenue base. The 5.52% customer cost estimate measures Lam Research's importance inside Micron's cost base.
Those denominators are different. Lam Research revenue is not Micron COGS, so the near match should not be interpreted as proof of equal bargaining power, equal replacement difficulty, or a perfectly balanced commercial relationship. What the numbers do support is a narrower conclusion: the relationship appears material enough to register at a similar percentage scale from both companies' economic perspectives.
That is analytically useful because many supply-chain relationships are highly asymmetric. A customer may represent a large share of a smaller supplier's revenue while the supplier represents only a small share of the customer's costs. Here, the displayed percentages do not show that kind of wide gap.
What the 1.2B USD size adds
The 1.2B USD relationship size adds absolute scale to the two relative measures.
A five-percent exposure can mean very different dollar amounts depending on company size. The monetary estimate confirms that this is not merely a high percentage attached to a tiny commercial connection.
Still, relationship size should not be treated as an audited purchase amount or contract value. Altsets represents it as an estimated research output. It is most useful when read beside the supplier and customer percentages.
Why Lam Research belongs in Micron supply-chain research
Lam Research describes a broad portfolio of semiconductor fabrication equipment used in advanced memory production, including etch, deposition, cleaning, and process technologies. Its current advanced-memory materials also describe equipment used across DRAM, NAND, HBM, and advanced packaging applications.
That product context explains why Lam Research can sit upstream from a memory manufacturer such as Micron. It does not identify the exact Lam tool, fab, service agreement, or purchasing entity represented by the 1.2B USD Altsets estimate.
The relationship data answers the economic question. Lam's product materials answer the industry-role question.
How an investor can use the relationship
If the starting event is at Micron, the 5.61% of Lam Research revenue estimate provides a reason to examine whether a large change in Micron fab spending could matter to Lam. If the starting event is at Lam Research, the 5.52% of Micron COGS estimate provides a reason to examine Micron's exposure to the supplier event.
Neither percentage is a forecast. Both are research-priority signals. A useful workflow is to start with the event, identify the relevant direction, use the matching percentage to rank exposure, then add company-specific evidence such as capex plans, equipment categories, production schedules, and available alternatives.
What the data does not establish
The displayed values do not prove that Lam Research is irreplaceable to Micron or that Micron is irreplaceable to Lam Research. They also do not establish exact tool purchases, contract terms, fab-level exposure, inventory, equipment service obligations, switching time, or pricing power. The near equality of 5.61% and 5.52% should therefore be treated as an interesting economic pattern, not a formal symmetry score. For metric definitions and interpretation limits, read the Altsets supply-chain data methodology.
Why this article is not another Micron supplier list
A supplier list answers who connects to Micron. This article asks whether one specific Lam Research relationship appears economically visible from both directions.
The answer is yes: 5.61% of Lam Research revenue and 5.52% of Micron COGS are unusually close numerically, while the 1.2B USD relationship size confirms meaningful absolute scale. For a broader network example involving Micron, see How to Find Hidden Supply-Chain Concentration in a Stock Portfolio. Browse the Company Dependency Research collection for more company-specific relationship analysis.