KLA Corporation (KLAC) Q1 2027 earnings review
KLA chip tool sales accelerate, while balance sheet orders dip
KLA Corporation, the maker of chip inspection equipment, accelerated shipments while keeping overhead tight. First-quarter revenue jumped 29% from a year ago to $4.14 billion, and profit per share excluding one-offs climbed 39% as engineering and sales costs shrank as a share of sales. Chief executive Rick Wallace attributed the momentum to artificial intelligence chip demand and set a $4.7 billion December-quarter revenue plan, above what the company's own second-half forecast pointed to.
| Revenue | $4.14B +28.9% from a year ago |
|---|---|
| Profit per share, excluding one-offs | $1.22 +38.6% from a year ago |
| Operating margin, excluding one-offs | 45.1% +2.9 percentage points from a year ago |
| Q2 revenue outlook | $4.5–4.9B middle of the range: +42.6% from a year ago |
⚖️ Verdict: 🟢 Bullish
The story got better because the December-quarter plan proves optical part shortages are easing and lifting shipments faster than KLA's prior 20% second-half growth plan implied. Operating margin excluding one-offs also reached 45% four years ahead of the 2030 target model. One caution: the only order book metric on the balance sheet shrank from June, while inventories and unpaid customer bills tied up $613 million of cash.
The question now is whether this shipment wave reflects sustainable 2027 factory demand or a catch-up on orders delayed from early 2026. If demand is still building, the order book will expand alongside shipments; if chipmakers are only clearing old orders, working capital will stay bloated as new bookings slow. The order backlog footnote in the upcoming quarterly filing will show which side is right.
🐂 Bull Case
Second-Half Ramp Beats KLA's Own Plan
KLA makes inspection machines that find microscopic defects on computer chips during manufacturing. Chief executive Rick Wallace said the company is "critical to the AI ecosystem buildout" and is seeing "increases in leading-edge designs across foundry and logic, device size and value, memory complexity and performance requirements, and the importance of advanced packaging". Three months ago, management forecast that revenue in the second half of calendar 2026 would grow about 20% over the first half.
- First-quarter revenue: $4.14 billion, up 28.9% from a year ago
- Semiconductor Process Control (wafer and mask inspection): $3.75 billion, up 29.5% from a year ago
- PCB and Component Inspection (circuit board tools): $242.2 million, up 27.8% from a year ago
- Second-quarter revenue outlook: $4.7 billion at the middle of the range, up 42.6% from a year ago by our math
Part of the year-over-year jump is an easy comparison, because optical part shortages capped shipments a year ago. Even so, the sequential step is real. By our math, first-quarter results plus the December-quarter plan put second-half calendar 2026 revenue 24.9% above the first half, beating the 20% plan.
What to watch: the March-quarter revenue outlook in three months. Another sequential step up would show that chipmakers are still expanding factory capacity into calendar 2027 rather than just clearing delayed 2026 shipments.
Cost Discipline Lifted the Operating Margin
KLA targets keeping 40% to 50% of every new revenue dollar as operating profit. This quarter the equipment maker beat that target because it kept engineering and overhead budgets nearly flat while shipments grew.
Operating margin excluding one-offs — primarily the accounting write-down of past acquisitions — rose 2.9 percentage points from a year ago to 45.1% by our math. Research and development (the cost of designing new tools) fell by 1.7 percentage points of revenue to 9.6%. Selling, general and administrative expenses (sales and corporate overhead) dropped by 1.1 percentage points to 7.3%. That operating discipline already puts the company inside its 2030 target of 45% to 47%.
What to watch: operating expenses in the December quarter against the prior plan of $15 million to $20 million in quarterly increases. Keeping spending within that band while revenue reaches $4.7 billion would push operating margin above 46%.
Services Hit Top of Long-Term Target
KLA's service business maintains and repairs tools already installed in customer factories. Because about 80% of this revenue comes from multi-year contracts, it steadies the company when equipment sales swing. Management recently set a long-term annual growth target of 12% to 14% for the unit.
Service revenue rose 14.2% from a year ago to $850.5 million, reaching the top of that target range. Because every new machine rolls off its standard one-year warranty into a service contract, the current wave of tool shipments locks in repair revenue for the next two years.
What to watch: service growth in the December quarter. Staying above 14% would show that high factory use at chipmakers is driving extra maintenance spending even before this year's new tools exit warranty.
Positives this quarter didn't test
Three standing drivers from previous quarters live in call commentary and were not quantified in the earnings release.
- Advanced packaging inspection (tools for testing multi-chip AI packages): Wallace noted "the importance of advanced packaging", and the conference call will show whether full-year sales beat the $1.1 billion target.
- Industry-wide equipment spending: the call will show whether management holds or raises its view of a $190 billion wafer equipment market for calendar 2027.
- Customer broadening: the call will update whether new factory projects at Intel, Samsung and Rapidus are placing orders for 2027 delivery.
🐻 Bear Case
Order Book Shrinks on the Balance Sheet
A year ago, KLA stopped publishing its quarterly backlog of unfilled customer orders, which had fallen to $7.9 billion. Last quarter, management told analysts verbally that the order book stood near $12.5 billion, and Wallace said this quarter's results showed "the accelerated growth we expected for the second half of calendar 2026".
The press release gives no backlog figure, and the only order tracking numbers on the balance sheet moved the other way. Deferred system revenue — cash collected or billed for machines not yet delivered — fell by $89.9 million from last quarter to $843.0 million. Total deferred revenue across systems and services dropped by $67.3 million from June to $1.71 billion, down 0.2% from a year ago by our math.
That matters because reported revenue jumped 28.9% over the same year while the balance-sheet backlog stood still. Investors have no audited number to verify that new orders are replacing the machines KLA is now shipping.
What to watch: the remaining performance obligation footnote in the quarterly filing. If that figure stays near $1.7 billion without a bridge to the verbal backlog, any order slowdown will remain invisible until the quarterly outlook drops.
Inventory and Unpaid Bills Tie Up Cash
Building more machines requires more parts, and KLA's balance sheet has been absorbing extra working capital for a year. In the prior fiscal year, the company sold more customer bills to banks and saw customer deposits drop.
In the first quarter, inventories on the balance sheet jumped by $441.9 million from June to $4.09 billion, up 24.1% from a year ago by our math. Accounts receivable — bills customers have not yet paid — rose 34.9% from a year ago to $3.07 billion, outpacing the 28.9% rise in sales. Together, inventory and unpaid bills pulled $613.0 million out of operating cash flow this quarter.
What to watch: the receivables and customer deposit footnotes in the quarterly filing. Another rise in sold receivables or a drop in deposits would mean KLA is giving customers looser payment terms to close deals.
Specialty Chip Tools Fall Behind the Boom
KLA's Specialty Semiconductor Process segment sells etching and deposition equipment used in advanced chip packaging and specialty electronics. Wallace said these businesses are benefiting from "the technology transitions and the rigorous performance requirements of high-performance computing", after the segment's profit fell 35% last fiscal year.
This quarter, Specialty Semiconductor Process revenue fell 12.7% from the June quarter to $139.5 million by our math. While sales were up 16.5% from a year ago, the unit lagged the 29.5% growth in core wafer inspection and the 27.8% rise in circuit-board inspection.
What to watch: Specialty Semiconductor Process segment profit in the quarterly filing's segment footnote. Another profit drop alongside a sequential revenue decline would show that high research spending in this unit is still not paying off.
Risks this quarter didn't answer
Four standing concerns from prior quarters require the quarterly filing or call remarks to test.
- Memory chip component costs: gross margin excluding one-offs is planned at 62.5% in Q2, down slightly from 62.7% in Q1 despite $564 million more revenue, suggesting higher memory component prices are still capping margin gains.
- China demand and export rules: the regional revenue table in the filing will show whether China stayed near 26% of sales or fell on trade limits.
- Customer concentration: the filing will show whether a single foundry customer still accounts for nearly a fifth of total revenue.
- Market share math: call remarks on calendar 2026 industry spending will show whether KLA's systems are finally growing faster than the broader equipment market.
👓 Other Themes
KLA Strips Out New Global Minimum Tax
Starting this quarter, KLA excluded $20.2 million of global minimum taxes (Pillar Two undertaxed profits rule taxes) from its profit excluding one-offs, adding about 1.5 cents per share to the headline figure by our math. The chip equipment maker also excluded 1 cent per share from its second-quarter outlook, saying it expects the charges to reverse "upon adoption of the Side-by-Side Safe Harbor provisions" that would exempt US-parented groups.
💲 Other KPIs
Spending on land, factories and equipment more than doubled from $89.3 million last quarter and $95.9 million a year ago. By our math, capital spending took 4.7% of revenue, up from 2.4% in the June quarter and 3.0% a year ago, as the company builds out manufacturing capacity for the current shipment wave.
Share buybacks jumped 71.7% from $545.1 million a year ago and rose from $571.0 million in the June quarter. Together with $305.1 million in dividends, total cash returned to shareholders reached $1.24 billion, or 92.9% of free cash flow by our math, reducing the diluted share count by 1.0% from a year ago to 1.311 billion.
Free cash flow — operating cash left after factory spending — rose 25.4% from $1.07 billion a year ago and rebounded from $817.1 million in the June quarter. That represents 32.3% of revenue and 83.4% of profit excluding one-offs by our math, held back slightly by the build in inventory and doubled capital expenditures.
🔮 Guidance
Raised. The $4.7 billion midpoint calls for 42.6% growth from a year ago and a 13.6% jump from Q1 by our math, beating what the prior 20% second-half plan implied. Part of the year-over-year rate reflects last year's supply-capped comparison. KLA has beaten its revenue midpoint for eight straight quarters; if the 2.5% four-quarter average beat holds, Q2 revenue would reach $4.82 billion.
New. At the $1.44 middle of the range, profit per share excluding one-offs would rise 62.7% from a year ago and 18.0% from the first quarter by our math. The forecast assumes 1.306 billion diluted shares and strips out 3 cents per share of acquisition write-downs and 1 cent of global minimum taxes.
New. The $1.41 middle of the range points to 62.4% growth from $0.87 a year ago (adjusted for the ten-for-one stock split) and a 19.5% increase from $1.18 in the first quarter by our math. Operating leverage on the $564 million sequential revenue step drives the gain.
New. The 62.5% midpoint matches the first-quarter plan and sits 0.2 percentage points below the 62.7% KLA just delivered, as product mix and higher memory component costs offset the benefit of higher factory volume.
New. At the 61.8% middle of the range, GAAP gross margin is virtually unchanged from 61.9% in the first quarter and up 0.4 percentage points from 61.4% a year ago by our math, including a 0.7 percentage point drag from acquisition write-downs.
❓ Key Questions
How does the $1.71 billion deferred revenue match the backlog?
Total deferred revenue on the balance sheet fell by $67 million this quarter to $1.71 billion and is unchanged from a year ago. Management previously cited a $12.5 billion order book, so investors need the bridge between the two figures.
Why did Specialty Semiconductor Process sales drop 13% from June?
Specialty Semiconductor Process revenue fell from $159.7 million in Q4 to $139.5 million in Q1 even as management highlighted high-performance computing demand. After segment profit fell 35% last year, investors need to know when the unit's margins will recover.
Why is the Q2 gross margin plan not rising with volume?
KLA plans for $564 million of additional sequential revenue in the December quarter, yet its 62.5% gross margin midpoint excluding one-offs is slightly below Q1's 62.7%. How much of that cap comes from memory chip component costs versus product mix?
Are customer payment terms lengthening as receivables and inventory climb?
Unpaid customer bills rose 35% from a year ago to $3.07 billion and inventory hit $4.09 billion. Did the company sell more receivables to banks this quarter, and how much of its purchase commitments can be cancelled if orders slow?