Investment Memorandum · Preview
For informational purposes only. Not investment advice.
Lam Research
LRCX
May 26, 2026
Lam Research (NASDAQ: LRCX) is one of four dominant global semiconductor capital equipment suppliers, specializing in etch and deposition. Generated ~$16.4B in FY2025 revenue: 65% from new equipment systems, 35% from CSBG (customer support and global services) aftermarket business. Holds #1 or #2 market share in virtually every etch and deposition sub-segment. Installed base across thousands of customer fabs creates durable, growing service revenue annuity. With ~$345B market cap and ~1.25B diluted shares, ranks third-largest semiconductor equipment company globally behind ASML and AMAT.
▲ Bull Case
- ◆HBM4 supercycle creates structurally higher etch intensity floor: 16-layer HBM4 requires ~5x TSV etch steps vs. standard DRAM, permanently raising etch content per chip; FY2028 HBM systems revenue could exceed $5B; FY28 EPS $9.50 at 32x = $304
- ◆CSBG approaching $8-10B is standalone recurring business worth 25-30x earnings, currently priced at cyclical multiples; as CSBG reaches 40-45% of revenue, blended multiple re-rates upward structurally, adding $30-50/share to fair value
- ◆NAND $40B upgrade cycle in Korea/Japan/US provides independent 2-3 year revenue tailwind for QCNAND and 200+ layer structures, not dependent on HBM demand
▼ Bear Case
- ◆38x P/E prices in 7+ years of above-average growth — historically unrealistic for SEMCAP; WFE has never sustained $130B+ for more than 2-3 years before cyclical reversion; bear case EPS $6.50 × 22x = $143, a $133 drawdown
- ◆China regulatory risk is asymmetric: represents 32-34% of revenue; each BIS restriction round permanently reduces China revenue without replacement; moderate new restrictions could reduce revenue by $2-3B/year, direct EPS impact $0.80-1.20/share
- ◆Gross margin record at 50% is unsustainable: Lam guided 50-150bps tariff headwind; if China mix improves plus tariffs persist, GM reverts to 47-48%, reducing earnings $300-600M/year
“Secular thesis (HBM creates structurally higher WFE floor, CSBG valued separately as recurring annuity, through-cycle EPS floor rising) vs. cyclical reversion (38x P/E prices 7-10 years above-trend growth, never happened in semcap history; first sign of AI capex moderation triggers simultaneous earnings + multiple compression). Debate resolves at Q4 FY2026 earnings (July 2026) when management sets FY2027 WFE guidance: ≥$140B validates secular; <$130B validates cyclical.”
- ◆Q4 FY26 earnings + FY27 WFE guide (July 2026) — most important thesis validator, VERY HIGH magnitude
- ◆HBM4 volume production confirmation from Samsung/SK Hynix (2H 2026) — validates supercycle thesis, HIGH magnitude
- ◆Advanced packaging revenue +50% YoY confirmed (July 2026) — validates secular narrative, HIGH magnitude
- ◆NAND ramp Korea/Japan (Q4 FY26 – Q1 FY27) — provides second growth engine, MEDIUM magnitude
- ◆New BIS export restrictions to China (Any 2026-27) — permanent revenue loss, VERY HIGH downside magnitude
- ◆AI capex pause signal from hyperscalers (Q3-Q4 2026) — falsifies HBM supercycle thesis, HIGH downside magnitude
- ◆WFE cycle turns (MEDIUM-HIGH probability 50%, HIGH severity) — simultaneous earnings + multiple compression; only mitigation is CSBG floor providing trough support
- ◆China BIS restrictions expand (MEDIUM probability 30%, HIGH severity) — permanent $2-3B revenue loss with no mitigation available
- ◆AI capex moderation (LOW-MEDIUM probability 20%, HIGH severity) — demand diversification to NAND/advanced packaging provides partial offset
- ◆AMAT/TEL wins HAR etch at Samsung (LOW probability 10%, MEDIUM severity) — switching cost moat thesis breaks if credible competitor qualification achieved
- ◆Gross margin compression (MEDIUM probability 30%, MEDIUM severity) — tariff headwinds + China mix changes already embedded in guidance
- ◆CEO Tim Archer departure (LOW probability 5%, MEDIUM severity) — strong operational bench reduces severity
Full Memo Continues
5 more sections, locked
- ●Valuation Range & DCFBase/bull/bear fair-value range, WACC, terminal growth, sensitivity to revenue + margin assumptions.
- ●Risk/Reward AssessmentPosition-sizing framework with explicit upside/downside skew and entry conditions.
- ●Management & Capital AllocationMulti-year capital-allocation track record, incentive alignment, and management readout.
- ●Monitoring FrameworkWhat to watch each quarter — leading indicators and inflection signals tracked by the analyst.
- ●Unresolved QuestionsOpen analyst questions and follow-up research items — the depth signal.
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