Lam Research (LRCX)

Investment Review After Q3 FY2026 Earnings (2026.04.22)

TL;DR

Lam Research makes the equipment that manufactures semiconductor chips — specifically etch and deposition tools used by every major chipmaker. Just reported: record revenue +24%, WFE outlook raised to $140B with upside bias, NAND recovery accelerating. Stock up ~1,000% over 5 years ($24 → $266). At $266 (46x P/E(ttm)), the stock prices in a multi-year AI-driven semi equipment upcycle. The risk: memory spending is cyclical, and 46x leaves limited margin for error.

Summary

Finding	Assessment
5-Year Stock Return	$24→$266. TTM OP +238% ($2.4B→$8.1B). P/E(ttm) expanded 15x→46x on AI semi upcycle.
Business Model	#1-#2 in etch & deposition globally. Foundry 59%, Memory 34%, Logic 7%. CSBG ~$8.4B/yr from 100K+ chambers.
Competitive Moat	WIDE Dominant high-aspect-ratio etch (3D NAND standard), Striker ALD tool-of-record at ALL memory makers, 100K+ chamber installed base.
Past 5-YR Drivers	3D scaling etch/dep intensity gains (SAM% low-30s→mid-30s), AI demand across all device segments, CSBG growing to $8B+ run-rate.
Recent Stock Move	$72→$266 (vs Dec 2024). TTM OP doubled in 8Q. R40 at 65%. WFE raised to $140B. GM expanding to 50%+.
Revenue Trend	ACCELERATING Rev YoY: 24% (Q3 2026) → 28% (Q4 2026E).
Margin Trend	EXPANDING OM%: 35.0% (Q3 2026) → 37.0% (Q4 2026E).
TTM OP Trajectory	ACCELERATING TTM OP QoQ: 7.0% (Q3 2026) → 9.5% (Q4 2026E). TTM OP $8,133M.
Key Opportunities	NAND recovery (200+ layer conversion pulled forward), WFE $140B with upside bias, advanced packaging +50%. 2027 “pretty good year.”
Key Risks	China 34% of rev (export risk). 46x P/E prices in multi-year upcycle. Memory inherently cyclical. Semi equip historically corrects 30%+.
Catalysts	Q4 FY2026 guided record $6.6B rev, 50.5% GM, $1.65 EPS. Long-term model update CY2026. NAND greenfield cycle visibility.
P/E(ttm) Valuation	46x (5-yr range: 10x–46x). At all-time high end. Upside if WFE sustains $140B+; downside to 20-25x on cycle correction.

Q3 FY2026 Key Data

Record revenue $5,841M (+24% YoY, +9% Q/Q), at upper end of guidance. EPS above top of guidance range.
By segment: Foundry 54% of systems (advanced packaging 50%+ growth), DRAM 27% (record, HBM strong), NAND 12% (growing). CSB record $2.1B (+25%).
Q4 guided at record $6.6B revenue, 50.5% GM, 36.5% OM, $1.65 EPS. WFE raised to $140B with upside bias.

Key Takeaways from Earnings Call

AI is transforming both compute AND memory: NAND recovery accelerating as AI data centers drive demand for higher layer count QLC SSDs. $40B conversion spending now pulled forward, majority before end of CY2027. Greenfield NAND capacity needed as installed base declines 20%+ from highs. Lam uniquely positioned with largest installed base for 3D NAND tools.
Etch and deposition intensity expanding across all device segments: SAM% of WFE growing to mid-30s, targeting high-30s. Won full dielectric etch at a key foundry/logic customer (first ever). DRAM transitioning to 1C with ALD low-K films (Striker tool of record at all leading memory makers). These are structural share gains, not cyclical.
Gross margin reaching target model (50%+) sustainably through operational efficiency, not just cycle leverage. Global factory footprint closer to customers, better tool reliability reducing warranty costs. CFO: “Keep gross margins roughly at June guided levels for rest of year.” Long-term model update coming later in year as company outperforms prior framework.

Key Segments and Revenue Mix (Q3 FY2026)

Segment	Q3 FY2026	% of Rev	Key Details
Systems — Foundry	~$2,050M	54% of sys	+35% YoY. Leading edge + mature nodes. Advanced packaging exceeding 50% growth. Full dielectric etch wins at key customer.
Systems — DRAM	~$1,030M	27% of sys	Record. HBM investments strong. Transition to 1C node driving ALD low-K adoption (Striker tool of record at all makers). DDR5/LPDDR5 ramp.
Systems — NAND	~$460M	12% of sys	Growing through year. AI driving QLC SSD demand. $40B conversion to 200+ layer pulled forward. Greenfield needed as installed capacity -20%+.
Customer Support (CSB)	$2,100M	36% of rev	Record. +25% YoY. Spares, upgrades, services. Dextro Cobots expanding (8 tool types). Equipment Intelligence growing. Utilization at max.

Geographic: China 34%, Korea 23% (record), Taiwan 23% (record). Installed base: 100,000+ chambers. Key competitors: Applied Materials (AMAT), Tokyo Electron (TEL.TYO), KLA (KLAC). Employee count: ~20,600 (+900 Q/Q).

Business Model

SUPPLIERS

Precision components & subsystems
Vacuum & gas delivery systems
RF power generators
Advanced materials (GaN, SiC)

Components / Technology →

LAM RESEARCH

Etch systems (Vantex, Flex, Kiyo)
Deposition (Striker ALD, Vector, ALTUS)
Advanced packaging (plating, TSV)
Customer support (100K+ chambers)
Dextro Cobots & Equipment Intelligence

Equipment / Services → $ Revenue

CUSTOMERS

TSMC, Samsung, SK Hynix
Intel, Micron, YMTC
GlobalFoundries, UMC
Emerging foundries worldwide

Moat Assessment: WIDE

Dominant market position in high-aspect-ratio etch — the most critical step in 3D NAND: Lam’s Vantex and Flex etch tools are the industry standard for channel hole etch in 3D NAND. As layer counts increase, the etch complexity scales exponentially — and Lam’s tools are production-proven at leading customers. No competitor has matched this capability at scale.
ALD deposition leadership at inflection points: Striker ALD is the tool of record at ALL leading memory makers for 1C DRAM bitline spacer applications. When an industry transitions to a new node, tool-of-record positions tend to persist for the life of that node. These are 5-7 year design wins.
100,000+ chamber installed base creates massive recurring revenue moat: CSB at $2.1B/quarter means ~$8.4B annual run-rate from servicing existing tools. This base grows with every new tool shipped. Dextro Cobots and Equipment Intelligence add differentiated services that competitors (AMAT, TEL) cannot easily replicate.

Stock vs. Earnings — 5-Year Performance

Stock currently $266, up ~1,000% from $24 (5 years ago). The extraordinary return reflects Lam’s transformation from a cyclical memory equipment company into the premier beneficiary of 3D scaling complexity in both NAND and DRAM. Each new device generation requires more etch and deposition steps, structurally increasing Lam’s content.
TTM OP grew from $2,407M to $8,133M (+238%). OP peaked at $6,049M in early 2023, contracted to $4,070M during the memory downturn, and has since surged past the prior peak on the AI-driven recovery. The trajectory is steeper than prior cycles due to etch/dep intensity gains.
P/E(ttm) at 46x reflects a multi-year AI semi equipment upcycle thesis. During the 2022-2023 downturn, the stock traded at 10-15x. The current premium prices in sustained WFE growth above $140B and Lam outperforming through SAM expansion and share gains.

Past 5-Year Key Drivers

3D scaling complexity drives structural etch/dep intensity gains: Each new generation of NAND (200+ layers), DRAM (1C node), and foundry (gate-all-around) requires more etch and deposition steps. Lam’s SAM% of WFE is expanding from low-30s to mid-30s, targeting high-30s — meaning Lam grows faster than the overall equipment market regardless of cycle.
AI creating unprecedented demand across all device segments: AI compute drives foundry/logic spending (advanced nodes + advanced packaging). AI memory drives DRAM (HBM) and NAND (QLC SSDs for AI data centers). This simultaneous demand across all segments is unusual and creates a broader, more durable upcycle than prior memory-driven cycles.
CSB (services) growing into a $8B+ annual run-rate business: 100,000+ installed chambers generating recurring spares, upgrades, and services revenue. Dextro Cobots and Equipment Intelligence add higher-value services. CSB provides counter-cyclical stability when new tool shipments slow.

Quarterly Key Metrics

USD	Q3'24	Q4'24	Q1'25	Q2'25	Q3'25	Q4'25	Q1'26	Q2'26	Q3'26	Q4'26E
Quarter End	Mar24	Jun24	Sep24	Dec24	Mar25	Jun25	Sep25	Dec25	Mar26	Jun26
Stock	$98	$106	$82	$72	$73	$97	$134	$171	$214	$266
Stock QoQ	+31%	+8%	-23%	-12%	+1%	+34%	+38%	+28%	+25%	+24%
Rev YoY	-2%	-2%	+21%	+20%	+16%	+24%	+34%	+28%	+22%	+24%
OM%	29%	29%	29%	30%	31%	33%	34%	34%	35%	37%
R40 (RevYoY+OM%)	+27%	+27%	+50%	+50%	+47%	+58%	+67%	+62%	+56%	+65%
TTM OP ($M)	$4,084	$4,344	$4,573	$4,831	$5,290	$5,901	$6,466	$6,942	$7,427	$8,133
TTM OP QoQ	+0%	+6%	+5%	+6%	+10%	+12%	+10%	+7%	+7%	+10%
FCF/OP	111%	98%	106%	84%	72%	92%	86%	90%	81%	69%
Debt/EBITDA	1.1x	1.0x	1.0x	0.9x	0.7x	0.7x	0.6x	0.6x	0.3x	0.3x
P/E(ttm)	36x	36x	26x	22x	20x	23x	29x	35x	40x	46x

Recent Stock Performance & Drivers

Stock currently $266, vs $72 (Dec 2024). The 269% rally from the cycle low reflects the most powerful semi equipment upcycle in a decade — driven by AI compute and memory demand, NAND recovery, and Lam’s structural share gains from etch/dep intensity expansion.
TTM OP doubled from $4,084M to $8,133M in just 8 quarters. Gross margins expanding toward 50%+ as factory efficiencies and customer mix improve. R40 at 65% is among the highest readings in Lam’s history.
P/E(ttm) expanded from 20x to 46x, reflecting the market’s view that this is a multi-year upcycle, not a single-quarter surge. WFE raised to $140B with upside bias. H2 CY2026 expected to exceed H1. 2027 “setting up to be a pretty good year.”

Opportunities

NAND recovery is the next growth driver: AI data centers consuming more NAND for QLC SSDs. $40B conversion to 200+ layer pulled forward to before end of CY2027. Greenfield needed as installed capacity down 20%+ from highs. Lam’s etch leadership in 3D NAND means it captures disproportionate share of every new layer added.
WFE raised to $140B with upside bias, and 2027 visibility strengthening: Customer spending projections moved higher across ALL device segments since January. SAM% expanding to mid-30s. Advanced packaging revenue growth exceeding 50%. New fab projects globally expanding customer base. CFO: “Demand is as strong as I can remember it.”
Gross margins reaching 50%+ sustainably: Not cycle leverage — structural improvements from global factory footprint, better tool reliability, and customer value pricing. Guided to sustain at ~50.5% for rest of year. Long-term operating model update coming (currently outperforming prior framework).

Challenges

46x P/E(ttm) prices in a multi-year upcycle with no significant correction. Semi equipment is historically cyclical. The prior WFE peak was followed by 30%+ revenue declines. If AI spending pauses or memory investment normalizes, the stock could return to 20-25x (implying 40-50% downside).
China at 34% of revenue carries geopolitical risk. Export restrictions could tighten further. Customer down payments declining (primarily Chinese customers). China WFE flattish in CY2026. If China restrictions expand, it removes a significant revenue contributor.
Memory remains inherently cyclical despite AI structural demand. DRAM prices could weaken if HBM build-out leads to oversupply in commodity DRAM. NAND pricing pressure from conversion-driven bit growth. CEO acknowledged “we’re not calling a peak” but also said the question about cyclicality is valid.

Next 12 Months

Q4 FY2026 (Jun) guided at record $6.6B revenue, 50.5% GM, 36.5% OM, $1.65 EPS. H2 CY2026 expected to exceed H1, implying continued sequential growth through Dec. NAND investment growing through remainder of year as 256+ layer conversion accelerates.
Long-term financial model update expected later in CY2026. Company is outperforming prior framework (35% OM target already exceeded). Updated targets could re-rate expectations higher.
New fab projects creating multi-year order visibility. Conversations extending 18-24+ months. 2027 “setting up pretty good.” Greenfield NAND and expanded foundry capacity drive equipment demand beyond just leading-edge AI chips.

Next 12-24 Months

NAND greenfield cycle could extend the upcycle beyond 2027. Installed capacity declining 20%+, but AI bit demand growing. Eventually conversion alone won’t suffice — new fabs needed. This is a multi-year equipment spending cycle that extends well beyond the current WFE forecast.
Advanced packaging becoming a material growth vector. 50%+ growth in CY2026. As chiplet architectures proliferate (both at leading edge and mature nodes), Lam’s plating and TSV capabilities address a growing TAM independent of traditional litho-driven scaling.
Dextro Cobots and Equipment Intelligence could transform the services business model. Currently at 8 tool types and expanding. If automated maintenance + AI-driven optimization become standard for all 100,000+ chambers, it creates a high-margin recurring revenue stream similar to software.

Core Metrics Scorecard

	Q2'22	Q3'22	Q4'22	Q1'23	Q2'23	Q3'23	Q4'23	Q1'24	Q2'24	Q3'24	Q4'24	Q1'25	Q2'25	Q3'25	Q4'25	Q1'26	Q2'26	Q3'26	Q4'26E
Quarter End	Dec21	Mar22	Jun22	Sep22	Dec22	Mar23	Jun23	Sep23	Dec23	Mar24	Jun24	Sep24	Dec24	Mar25	Jun25	Sep25	Dec25	Mar26	Jun26
R40 > 40%	✅		✅	✅	✅						✅	✅	✅	✅	✅	✅	✅	✅	✅
R40 accelerate			✅	✅	✅			✅	✅	✅	✅	✅		✅	✅			✅	✅
TTM OP QoQ > 10%															✅
TTM OP QoQ accelerate			✅	✅						✅	✅		✅	✅	✅				✅
TTM FCF/OP > 60%	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Debt/EBITDA < 3.5	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Total passes	3	2	5	5	4	2	2	3	3	4	5	4	4	5	6	3	3	4	5
Stock QoQ	+26%	-25%	-21%	-14%	+13%	+28%	+21%	-2%	+19%	+31%	+8%	-23%	-12%	+1%	+34%	+38%	+28%	+25%	+24%
P/E(ttm)	22x	17x	13x	10x	11x	14x	19x	21x	28x	36x	36x	26x	22x	20x	23x	29x	35x	40x	46x

LRCX hit 6 passes in Q4 FY2025 (Dec 2025) — a perfect score that preceded the 25% rally in Q1 2026. The scorecard’s strongest readings consistently precede the best stock performance periods. Current 4 passes reflect strong but normalizing momentum as the base grows.
The R40 chart tells the full story: R40 above 40% since Q3 2024 and now at 65% confirms this is a genuine growth cycle, not just a recovery bounce. The prior cycle peaked with R40 above 80% in 2021 before collapsing. Current readings suggest the cycle has room to run but is maturing.

Chart: R40 vs Stock Price (Since 2020)

Chart: Scorecard Total Passes vs Stock Price (Since 2020)

Source: SEC EDGAR annual and quarterly filings, company earnings conference calls and presentations.

Disclaimer: This report is for educational purposes only. NO investment advice.