Lam Research (Nasdaq:LRCX) posts record March 2026 revenue of $5.84 billion, driven by AI-related semiconductor demand. Gross margin expands as guidance points to stronger June quarter performance.

Key Highlights

  • Record quarterly revenue of $5.84 billion, up 9% quarter on quarter and 24% year on year
  • Non-GAAP diluted EPS of $1.47, rising 16% from the prior quarter
  • Gross margin expanded 20 basis points to 49.9% on a non-GAAP basis
  • June 2026 quarter guidance set at $6.60 billion in revenue, implying continued acceleration
  • China remains the largest revenue geography at 34% of quarterly sales

A Record Quarter Built on AI Infrastructure Demand

Lam Research (Nasdaq:LRCX) delivered its strongest quarterly revenue in company history for the period ended March 29, 2026, generating $5.84 billion in sales. The result reflects sustained capital expenditure growth from memory and logic chipmakers investing in AI-oriented manufacturing capacity. Systems revenue, covering leading-edge deposition and etch equipment, rose to $3.73 billion from $3.36 billion in the prior quarter, underscoring the underlying equipment cycle rather than a services-led bounce.

Customer support-related revenue, which includes spares, upgrades, and the Reliant product line, climbed to $2.11 billion, up from $1.99 billion in the December 2025 quarter. Together, these two revenue streams signal healthy utilisation rates at customer fabs alongside fresh capacity investment.

Margin Discipline Holds as Operating Leverage Builds

Non-GAAP gross margin reached 49.9%, a 20-basis-point sequential improvement, while operating margin on the same basis held at 35.0%. On a GAAP basis, operating income rose to $2.05 billion from $1.81 billion in the prior quarter, a 13% sequential increase that outpaced revenue growth and reflects improving cost absorption at higher volumes. Operating expenses grew to $864 million, a measured 2.7% increase that management kept well below the 9% revenue gain, producing meaningful operating leverage.

Net income of $1.83 billion on a GAAP basis translated to diluted earnings per share of $1.45, with the non-GAAP figure reaching $1.47 after adjusting for intangible amortisation, deferred compensation movements, and discrete workforce optimisation charges taken in the quarter.

Geographic Mix Raises Structural Questions

China accounted for 34% of revenue in the March quarter, followed by Korea and Taiwan each contributing 23%. The concentration in China remains a focal point for risk assessment given evolving export control frameworks. The United States represented just 6% of sales, while Japan contributed 8%. Notably, the company reported approximately $434 million in estimated future revenue from Japanese customer shipments awaiting acceptance, more than double the $226 million figure at the end of the December 2025 quarter, suggesting a growing deferred pipeline in that region.

Balance Sheet and Capital Return Activity

Cash and equivalents declined to $4.77 billion from $6.20 billion at the end of the prior quarter. The reduction was driven by $1.16 billion in share repurchases, a $751 million debt repayment, $332 million in capital expenditures, and $326 million in dividends. Operating cash flow of $1.14 billion only partially offset these outflows. Total assets stood at $20.79 billion against total liabilities of $10.21 billion, leaving stockholders equity at $10.58 billion.

Guidance Signals Further Acceleration

For the June 2026 quarter, management guided revenue of $6.60 billion, plus or minus $400 million, which at the midpoint would represent a 13% sequential increase and set another potential record. Non-GAAP operating margin guidance of 36.5%, plus or minus 1%, would mark a 150-basis-point expansion from the March quarter level. Diluted EPS guidance of $1.65, plus or minus $0.15, points to continued earnings growth if volumes track the upper half of the revenue range.

These projections carry execution risk, particularly given ongoing trade policy uncertainty and the dependence on Chinese customer spending. Tariff-related cost pressures and export licensing constraints remain variables that management explicitly flagged as potential sources of deviation from the stated outlook.

Market Response Reflects Earnings Confidence

Shares of Lam Research closed at $265.55, gaining $7.18 or 2.78% on the day results were published. The stock traded within a session range of $257.40 to $266.14, with the close near the top of that band suggesting sustained buying interest into the session end rather than a fade following an initial pop.

The 52-week range of $67.55 to $273.50 places the current price near the upper end of the annual trading band, reflecting the re-rating the stock has undergone as AI-driven semiconductor capital expenditure expectations have firmed. The proximity to the 52-week high of $273.50 indicates that further upside from current levels would require earnings delivery to match or exceed the June quarter guidance range, as the valuation already prices in a degree of cycle continuation.

The Broader Picture: Where Lam Stands in the AI Equipment Cycle

The March 2026 quarter is not simply a strong earnings print. It reinforces a structural argument: the semiconductor equipment industry is in the early-to-middle stages of a multi-year AI infrastructure cycle, and Lam sits at the centre of its most capital-intensive segment.

Memory and logic chipmakers are committing to successive nodes that demand more deposition and etch steps per wafer, directly expanding Lam's addressable opportunity. Growing systems revenue by nearly 23% year on year while expanding margins signals pricing power and demand visibility that goes well beyond replacement-cycle spending.

The risk profile, however, is not negligible. China at 34% of revenue, escalating export controls, and the inherent lumpiness of equipment ordering mean the trajectory is not guaranteed. The plus or minus $400 million guidance range is an honest acknowledgment that customer timing and trade policy remain live variables.

What the quarter does confirm is that AI-driven semiconductor demand has sufficient momentum to sustain elevated equipment spending. Whether that sustains Lam's proximity to its 52-week high depends on execution and on whether the geopolitical environment leaves the China revenue base intact. The fundamentals support the narrative. The June quarter is the first test.