Financial Data and Key Metrics Changes - Lam Research reported record revenues of $5.3 billion for the September quarter, a 3% increase from the previous quarter [6][22] - Gross margin reached 50.6%, up from 50.3% in the prior quarter, while operating margin was 35%, marking a record level [21][28] - The deferred revenue balance at quarter end was $2.77 billion, slightly up from the previous quarter [22] Business Line Data and Key Metrics Changes - Foundry accounted for 60% of systems revenue, up from 52% in the previous quarter, indicating strong demand in this segment [23] - Memory contributed 34% of systems revenue, down from 41%, with non-volatile memory at 18%, down from 27% [23] - Customer Support Business Group (CSBG) generated approximately $1.8 billion in revenue, slightly higher sequentially and year-over-year, driven by strength in spares and upgrades [26][27] Market Data and Key Metrics Changes - China represented 43% of total revenue, up from 35% in the previous quarter, with domestic Chinese customers showing growth [25] - Taiwan accounted for 19% and Korea for 15% of total revenue, with Korea seeing a sequential decline [25] Company Strategy and Development Direction - The company anticipates a $200 million revenue impact from the new 50% affiliate rule affecting shipments to certain domestic China customers [7] - Lam Research is focusing on AI-related demand, which is expected to support growth in leading-edge foundry logic and DRAM, as well as continued NAND upgrade spending [8][10] - The company is investing in advanced packaging opportunities to meet future demand, particularly as AI and high-performance computing require larger chips [18][19] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in a robust setup for equipment spending in calendar year 2026, despite anticipated declines in domestic China investments [7][39] - The company expects to close calendar year 2025 with three consecutive quarters of revenue exceeding $5 billion, reflecting strong execution and demand [6][40] - Management noted that the technology requirements of AI align well with Lam's product strengths, presenting significant opportunities for growth [20] Other Important Information - The company allocated approximately $990 million to share buybacks in the September quarter, with an average buyback price of about $106 per share [32] - Capital expenditures for the quarter were $185 million, focused on lab investments in the U.S. and manufacturing site expansions in Asia [35] Q&A Session Summary Question: Insights on customer conversations regarding AI infrastructure spending - Management noted that while recent announcements indicate future demand, current conversations focus on near-term needs for equipment, particularly in NAND upgrades [43][45] Question: Relative outperformance to WFE and drivers for 2026 - Management indicated confidence that Lam's markets in etch and deposition will outgrow WFE due to ongoing technology trends in semiconductor manufacturing [48][50] Question: Clarification on December revenue guidance - Management attributed the stronger December guidance to better-than-expected demand in high bandwidth memory and overall equipment spending [53][55] Question: Expectations for NAND market and potential for new tools - Management expects the NAND business to remain predominantly upgrade-focused through 2026, with potential for new tools as demand increases [89][90] Question: Impact of clean room space on overall growth - Management acknowledged that clean room space could limit growth, but emphasized that the ability to accelerate infrastructure investments depends on customer plans [79][81]