Lam Research -- How the Business Works

Lam Research is the dominant provider of etch and deposition equipment for the global semiconductor industry, holding roughly 50% market share in etch and 30% in deposition. The business model has two engines: Systems revenue (~65% of sales) from selling capital equipment to chipmakers, and Customer Support Business Group (CSBG) revenue (~35% of sales) that generates recurring income from the 100,000+ installed chamber base. Every major scaling trend in semiconductors -- vertical NAND stacking, gate-all-around transistors, 3D DRAM, advanced packaging -- increases the number of etch and deposition steps per wafer, structurally expanding Lam's serviceable addressable market from the low-30s to high-30s as a percentage of total wafer fabrication equipment (WFE) spending. Calendar 2025 revenue reached a record $20.6 billion with non-GAAP operating margins of 34-35%.

The installed base is the moat. Every etch or deposition chamber Lam ships becomes a source of recurring CSBG revenue for the next 10-15 years. At 100,000+ chambers and growing, this installed base generated a record $7.2 billion in CY2025 -- revenue that comes with higher margins and lower cyclicality than new equipment sales. The installed base has grown every year for 13 consecutive years since the Novellus merger. Equipment Intelligence software and Dextro cobots are transforming service delivery into a margin-accretive, subscription-like business. This is not a one-time equipment sale -- it is an annuity that compounds.

Process intensity is the structural growth driver. Unlike most capital equipment businesses where the addressable market is static, Lam benefits from a structural increase in the number of etch and deposition steps required per wafer at each new technology node. Gate-all-around transistors require ~2x more Aqara applications. ALD Moly creates ~3x more metal deposition SAM. 200+ layer NAND requires dramatically more etch cycles. Backside power delivery will add entirely new layers of metallization. The result is that Lam captures a growing share of each WFE dollar spent -- SAM expanding from the low-30s to the high-30s as a percentage of total WFE. This intensity tailwind persists regardless of whether WFE grows or contracts in any given year.

Oligopoly pricing power protects margins. The semiconductor equipment industry is one of the tightest oligopolies in technology. Lam, AMAT, TEL, and KLAC collectively control the critical process steps in chip manufacturing. Switching costs are enormous -- qualifying a new tool at a leading-edge fab takes years and costs hundreds of millions of dollars. Once Lam wins a process of record position (as Aqara has in conductor etch and Halo ALD Moly has in metal deposition), that position typically persists for 3+ consecutive nodes. Non-GAAP operating margins of 34-35% at current revenue levels -- ahead of the Investor Day model -- reflect this pricing power.

Capital return accelerates per-share compounding. Lam returned 85% of CY2025 free cash flow to shareholders through buybacks ($4.1B) and dividends ($1.2B). The diluted share count has declined 3.2% over the past five quarters, from 1,304 million to 1,262 million. Combined with the revenue and margin trajectory, this drives EPS growth that outpaces revenue growth -- CY25Q4 EPS grew 39.6% YoY on 22.1% revenue growth. Management has committed to returning 75-100% of FCF and raised the dividend from $0.23 to $0.26 per share in CY2025. At the February 2025 Investor Day, management targeted more than doubling revenue and profit over five years -- a target they appear to be ahead of schedule on.