KLA Corporation (KLAC)

Investment Review After Q3 FY2026 Earnings (stock price as of 2026.04.29)

TL;DR

KLA is the dominant process control player in semiconductor manufacturing — the inspection and metrology “eyes of the fab” that catch defects across every leading-edge logic, HBM and advanced packaging line. Q3 FY2026 (Mar quarter) printed record revenue of $3.42B (+11% YoY, +4% QoQ), non-GAAP GM 62.2%, OM 42.6%, EPS $9.40, and June quarter guide $3.575B raised the calendar 2026 view to high-teens YoY growth with 2027 expected to grow even faster. Stock currently $1,816 at 52x P/E(ttm), TTM OP $5.5B — main risk: stock has run +837% in 5 years versus +156% TTM OP, leaving multiple compression risk if WFE slows or China restrictions tighten further.

Summary

Finding	Assessment
5-Year Stock Return	Stock currently $1,816, vs. $194 (Q1 2021) — up 837%. TTM OP +156% ($2.1B→$5.5B). P/E(ttm) re-rated from ~22x to 52x. FCF $4.0B LTM with $3.2B LTM capital returns. Multiple expansion drove most of the move.
Business Model	STRONG. #1 semiconductor process control with 58% share (~7x nearest competitor). 90% Semi PC, 5% Specialty, 5% PCB. Product 77% + Service 23% (16+ consecutive years growth). $13.1B LTM revenue. Investment-grade balance sheet (A2/A-/A).
Competitive Moat	WIDE. Process Control share +360bps since 2021, ~7x nearest competitor. #1 in Advanced Wafer-Level Packaging in 2025 (+14pp share gain). Deep customer integration with high switching costs. Structural beneficiary of chip complexity — TAM grows with each node.
Past 5-YR Drivers	Rising process control intensity from AI/EUV/HBM, advanced packaging share explosion (10%→#1), resilient services growing 15% CAGR, and value-based pricing maintaining 61-63% gross margins through cycles. 16% revenue CAGR, 20% FCF CAGR.
Recent Stock Move	Stock currently $1,816, vs. $711 (Q3 2024) — up 155%. TTM OP +45%. P/E(ttm) expanded 35x→52x. AI-driven WFE + advanced packaging acceleration + 2027 visibility drove sustained re-rating.
Revenue Trend	ACCELERATING Rev YoY: 11% (Q3 FY2026) → 18% (Q4 2026E).
Margin Trend	FLAT OM%: 41% (Q3 FY2026) → 41% (Q4 2026E).
TTM OP Trajectory	ACCELERATING TTM OP QoQ: 2% (Q3 FY2026) → 4% (Q4 2026E). TTM OP $5.5B.
Key Opportunities	Advanced packaging $1B in CY2026 (+58% YoY) + 2027 will grow faster than 2026. Customer urgency to secure 2027 slots highest ever. Semi PC systems +20% in CY2026. 2030 model: $26B revenue, 45-47% OM, $84 EPS.
Key Risks	52x P/E(ttm) at all-time high — +837% stock vs +156% TTM OP signals stretched valuation. If AI capex pauses or 2027 WFE disappoints, multiple could compress to 30-35x (25-35% downside). DRAM chip cost 100bps GM headwind. China ~24% of revenue.
Catalysts	Q4 FY2026 (Jun) guide $3.575B ±$200M, GM 61.75%, EPS $9.87 ±$1.00. CY2026 high-teens YoY growth, >$140B WFE. CY2027 expected to grow faster than 2026. 17th consecutive dividend hike (+21%) and $7B incremental buyback authorization.
P/E(ttm) Valuation	ELEVATED at 52x (5-year range: 13x-52x). All-time high. Reflects premium for AI/HBM/advanced packaging tailwinds. Justified if KLA sustains 15%+ revenue growth with 63%+ GM through 2027. Vulnerable to any slowdown in WFE spending or margin compression.

Q3 FY2026 Key Data

Record revenue $3.415B (+11% YoY, +4% QoQ), beat midpoint $3.35B. Non-GAAP GM 62.2% (+45bps vs guide), OM 42.6%, EPS $9.40 ($9.50 at guided tax rate); GAAP EPS $9.12.
Semi Process Control $3.08B (+13% YoY, 90% of rev). Specialty Semi $164M (+5%); PCB & Component $167M (-1%). Wafer Inspection $1.74B (+16% YoY, 51% of rev) led; Patterning $615M (-3%) dragged.
Q4 FY2026 (Jun) guide: revenue $3.575B ±$200M (mid +5% QoQ). GM 61.75% ±1pp, non-GAAP EPS $9.87 ±$1.00; CY2026 view raised to high-teens YoY growth, WFE market >$140B.

Key Takeaways from Earnings Call

AI-driven WFE demand unprecedented — 2027 will grow faster than 2026. Urgency to secure 2027 slots highest Wallace has ever seen; broad across foundry/logic, memory, packaging. Semi PC guided >20% CY2026 vs >$140B WFE.
Advanced packaging revenue raised to ~$1B CY2026 (from $635M), ~58% growth — above prior >30%. #1 share in Advanced WLP 2025 (+14pp, +70% YoY rev). Process Control share 58%, ~7x nearest peer. CoWoS, SOIC, hybrid bonding driving intensity.
Services $775M (+16% YoY) above new 13-15% target; Q3 capital returns $875M, $3.2B LTM. Investor Day raised return to >90% of FCF, 17th dividend hike (+21% to $2.30), $7B buyback added. China ~24% of mix; Huawei letter “immaterial.”

Key Segments and Revenue Mix (FY2025)

Segment	Revenue	% of Total	Key Details
Semiconductor Process Control	$10,947M	90%	Inspection, metrology, data analytics; +25% YoY; #1 share at 58% (+360bps since 2021); ~7x nearest competitor
Specialty Semiconductor Process	$587M	5%	Etch & deposition for advanced packaging; +11% YoY
PCB & Component Inspection	$622M	5%	AI-driven packaging products; +13% YoY; exited Display business
Total FY2025	$12,156M	100%	+24% YoY. Product $9.5B (+27%), Service $2.7B (+15%). GM 60.9%. FCF $4.4B.

Business Model

SUPPLIERS

Optical component makers (long lead time)
DRAM chip suppliers
Precision laser & sensor vendors
Specialized materials & optics

Components / Optics →

KLA CORPORATION

Process control systems (inspection + metrology)
AI-driven data analytics & yield management
Service & support (~$3.0B LTM, 23% of rev)
Advanced packaging inspection
#1 global market share in process control (58%)

Systems / Service → $ Revenue

CUSTOMERS

TSMC, Samsung, Intel (foundry/logic 62%)
SK Hynix, Micron (HBM/DRAM 38%)
Advanced packaging fabs (CoWoS, SOIC)
Specialty & legacy chipmakers
PCB & component manufacturers

Moat Assessment: WIDE

KLA is the undisputed #1 in semiconductor process control with 58% share — ~7x the nearest competitor. In Advanced Wafer-Level Packaging, KLA reached #1 in 2025 (+14pp share gain). KLA’s broadband plasma (BBP) wafer inspection tools have no peer at scale. Competitors (Applied Materials, ASML, Lasertec, Onto Innovation) each address subsegments but none match KLA’s breadth across inspection, metrology, e-beam and data analytics.
Deep customer integration creates high switching costs and multi-decade relationships. KLA’s systems are embedded in customers’ manufacturing processes from R&D through high-volume production. Long qualification cycles (6-12 months) make displacement extremely costly. Customers are increasingly using KLA tools to drive yield on prior nodes (e.g. Intel 3, Intel 7) given AI-driven capacity tightness.
Process control is a structural beneficiary of semiconductor complexity — the TAM grows with each node transition. Faster product cycles, larger die sizes, rising design variability, and advanced packaging all require more process control. KLA’s 2030 model targets $26B revenue (13-17% CAGR) and 45-47% OM with WFE growing to ~$215B ±$20B by 2030.

Stock vs. Earnings — 5-Year Performance

Stock currently $1,816, vs. $194 (Q1 2021) — up 837% over 5 years. KLA went parabolic on AI-driven semi capex, advanced packaging share gains, and rising process control intensity at the leading edge. Multiple expansion drove most of the move — P/E(ttm) re-rated from ~22x to 52x. The stock briefly dipped to $303 in CY2023 before resuming a near-vertical climb through 2025-2026.
TTM OP grew from $2.1B to $5.5B (+156%), well below the +837% stock move. Operating margins expanded from ~37% to 42-43% on services scale and pricing discipline. The gap between earnings growth (+156%) and stock return (+837%) signals that valuation is doing the heavy lifting now — multiple compression is the dominant risk if AI capex pauses or WFE growth disappoints in 2027.
FCF reached $4.0B TTM (73% of OP), supporting $3.2B LTM capital returns and a 16% dividend CAGR since 2006. KLA has 17 consecutive annual dividend hikes (latest +21% to $2.30/share), a $7B incremental buyback authorization, and an investment-grade balance sheet (Moody’s A2, S&P A-, Fitch A) with $5.0B cash vs $5.95B debt. FCF grew at ~20% CAGR over 5 years — above the 16% revenue CAGR.

Chart 1: Stock Price vs TTM Operating Income

KLAC Stock Price vs TTM Operating Income

Past 5-Year Key Drivers

Rising process control intensity from AI, EUV, HBM and advanced packaging. Process control has been gaining share within WFE as design starts proliferate at the leading edge and HBM/3D stacking add inspection layers. KLA Process Control share grew 360bps since 2021 to 58% in 2025 — ~7x the nearest competitor. The 2nm node has higher process control intensity than 3nm despite similar EUV-layer count.
Advanced packaging market share went from ~10% (2021) to #1 with ~70% YoY revenue growth in 2025. KLA captured a disproportionate share of the >$10B advanced packaging equipment market as chiplets, HBM stacking, CoWoS and hybrid bonding all required nanometer-level inspection. CY2025 advanced packaging revenue ~$635M; CY2026 raised to ~$1B (+58% YoY).
Service business grew at ~15% CAGR to ~$3.0B LTM, 23% of revenue, with 16+ consecutive years of growth. The expanding installed base creates annuity-like revenue with higher margins than product sales, anchoring the capital return strategy. KLA raised the long-term services CAGR target to 13-15% at the March 2026 Investor Day.

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	Mar 2024	Jun 2024	Sep 2024	Dec 2024	Mar 2025	Jun 2025	Sep 2025	Dec 2025	Mar 2026	Jun 2026
Stock Price	$711	$828	$774	$630	$680	$896	$1,079	$1,215	$1,472	$1,816
Stock QoQ	+27%	+16%	-6%	-19%	+8%	+32%	+20%	+13%	+21%	+23%
Rev YoY	-3%	+9%	+19%	+24%	+30%	+24%	+13%	+7%	+11%	+18%
OM%	37%	38%	39%	48%	42%	43%	42%	41%	41%	41%
R40 (Rev YoY + OM%)	+34%	+47%	+58%	+72%	+72%	+66%	+55%	+48%	+53%	+60%
TTM OP ($M)	3,769	3,925	4,146	4,456	4,878	5,253	5,470	5,351	5,459	5,658
TTM OP QoQ	+0%	+4%	+6%	+7%	+9%	+8%	+4%	-2%	+2%	+4%
FCF/OP ttm	82%	77%	76%	75%	72%	71%	71%	82%	74%	73%
Debt/EBITDA	1.6x	1.5x	1.4x	1.2x	1.1x	1.0x	1.0x	1.0x	1.0x	1.0x
P/E(ttm)	35x	39x	34x	25x	24x	29x	33x	37x	44x	52x

Recent Stock Performance & Drivers

Stock currently $1,816, vs. $711 (Q3 2024) — +155% over 8 quarters with no meaningful pullback since the Jun 2025 trough. Each quarter has built on the prior on accelerating AI-driven WFE expectations, advanced packaging share wins, and rising process control intensity. The most recent +21% Q3 2026 move and +23% Q4 2026E print a parabolic shape.
TTM OP grew from $3.8B to $5.5B (+45%) while R40 stayed above 40% for 11 consecutive quarters. Revenue growth re-accelerated from -3% YoY in Q3 2024 to +30% in Q3 2025 before moderating to +11% in Q3 2026; supply constraints capped H1 CY2026. Q4 2026E +18% YoY reflects guided $3.575B and the H2 CY2026 acceleration.
P/E(ttm) re-rated from 25x to 52x, the highest level in KLA’s history. The premium reflects confidence in KLA’s ability to outperform WFE through process control intensity, advanced packaging share gains, and a resilient services franchise — but also leaves no margin for error if 2027 disappoints.

Opportunities

Advanced packaging raised to ~$1B CY2026 (+58% YoY from $635M). Demand “absolutely picked up over last 90 days” per CFO. #1 share in Advanced WLP 2025 (+14pp). CoWoS, SOIC hybrid bonding driving upgrade; ~$13B market, KLA >2x faster.
2027 will grow faster than 2026 with unprecedented urgency for slots. Wallace: “higher urgency around securing capacity than I can remember seeing.” Greenfield foundry/logic, DRAM, flash buildouts ramping. Capacity is binding constraint.
Process control intensity rising at every node, across all customers. 2nm has higher PC intensity than 3nm; HBM stacking and packaging add intensity beyond litho. Services +16% YoY (above 13-15% target); CY2026 base feeds 2027-28 services.

Challenges

Stock +837% over 5 years vs +156% TTM OP — valuation stretched at 52x. Multiple expansion drove most of the move. If AI capex moderates, China tightens, or 2027 WFE disappoints, P/E could compress to 30-35x → 25-35% downside.
DRAM cost inflation a 100bps GM headwind through at least CY2026. KLA image processing computers ship with DRAM; pricing elevated. CFO raised headwind from 75-100bps to ~100bps; tariffs another 50-100bps but easing. CY2026 GM ~62% ±50bps.
China revenue ~24% of mix, expected to grow slower than WFE. Huawei letter impact “immaterial” and in guidance. China spending flat recent years; further export restrictions a downside risk. Patterning revenue -3% YoY / -12% QoQ.

Next 12 Months

Q4 FY2026 guide: $3.575B ±$200M, GM 61.75% ±1pp, EPS $9.87 ±$1.00. Implies +18% YoY, +5% QoQ at mid. Foundry/logic ~82% of Semi PC (vs ~62%); memory ~18%. H2 CY2026 acceleration drives high-teens YoY growth full year.
CY2026 revenue tracking to ~$15B (high-teens YoY). Semi PC systems guided >20% in CY2026, outperforming >$140B WFE. Sequential growth accelerates every quarter. CFO confirmed $14.9-15B as “the right way to think about it.”
Capital return target raised to >90% of FCF; new $7B buyback on top of $3.3B remaining. 17 consecutive dividend hikes (+21% to $2.30). LTM buybacks $2.14B, dividends $1.0B. FCF $4.0B LTM (31% margin) supports continued deployment.

Next 12-24 Months

CY2027 even stronger as new customer fabs come online. Greenfield foundry/logic, DRAM, flash projects ramping. Urgency to secure 2027 slots highest Wallace has ever seen. Capacity is binding constraint — even fastest fabs short by end of 2027.
2030 model: $26B revenue (13-17% CAGR), 45-47% OM, $84 EPS ±$8. WFE projected at $215B ±$20B by 2030 (~11% semi CAGR + 1pp WFE outperformance). KLA to outperform WFE on +150bps Process Control share gain and advanced packaging.
52x P/E(ttm) at all-time high — vulnerable if AI capex pauses. If CY2027 WFE disappoints or memory pricing normalizes, multiple could revert to 30-35x → 25-35% downside. Sustained 15%+ growth with 63%+ GM would justify the premium.

Core Metrics Scorecard

	Q1'22	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	Sep21	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	5	6	3	5	5	3	3	2	2	4	4	5	5	5	5	3	3	3	5	5
Stock QoQ	+3%	+29%	-15%	-13%	-5%	+24%	+6%	+22%	-5%	+22%	+27%	+16%	-6%	-19%	+8%	+32%	+20%	+13%	+21%	+23%
P/E(ttm)	19x	22x	18x	14x	13x	15x	16x	20x	21x	27x	35x	39x	34x	25x	24x	29x	33x	37x	44x	52x

KLA’s scorecard is uniquely characterized by TTM OP QoQ >10% almost never passing — only 2 of 20 quarters. Unlike high-growth cyclicals (MU, WDC), KLA’s earnings grow steadily but rarely surge >10% QoQ. The stock is instead driven by R40 and R40 acceleration, which have been the most reliable predictors of strong quarters. When both R40 >40% and R40 acceleration pass (5-6 total passes), the stock consistently rallies.
FCF/OP and Debt/EBITDA have never failed in the 20-quarter window — KLA’s balance sheet is bulletproof. With FCF/OP consistently above 70% and Debt/EBITDA at 1.0x, balance sheet health is never the constraint on the scorecard. This provides a stable 2-pass floor, which means R40 and acceleration metrics are the swing factors.
The stock’s sharpest rallies coincide with transitions from 2-3 passes to 5-6 passes. The Q4 2023 → Q4 2024 sequence at 4-5 passes drove +27%/+16%; the Q4 2025 → Q1 2026 transition from 3 to 3 passes (R40 accelerating again) drove +32% then +20%. Latest Q3 2026 print (5 passes, R40 reaccelerating to 53%) drove +21% with +23% QoQ in Q4 2026E.

Chart 2: R40 vs Stock Price (Since 2020)

Chart 3: Scorecard Total Passes vs Stock Price (Since 2020)

KLAC Scorecard Total Passes vs Stock Price

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

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