Lam Research enters its Q1 FY2027 earnings release on October 21 with guidance for revenue of $8.1 billion plus or minus $400 million, aligning closely with consensus estimates near $8.13 billion and reflecting more than 20% sequential growth from the record $6.72 billion posted in Q4 FY2026. AI infrastructure spending continues to drive robust demand for the company’s etch and deposition equipment, alongside NAND upgrades and advanced packaging momentum that supported a 26% full-year revenue increase to $23.23 billion in fiscal 2026. Management has raised its calendar 2026 wafer fab equipment spending outlook to the low $150 billion range, citing strong customer visibility and pricing leverage that should sustain margin expansion near 52%. Traders will focus on any updates to China exposure, supply execution, and whether actual results exceed the upper end of guidance amid broader semiconductor cycle strength.