Question · Q4 2025
Joe Quatrochi questioned the 3% sequential growth guidance for the semi business, noting that some main customers are guiding for higher sequential growth (high single-digit, low double-digit) for Q1. He also asked if the 50% incremental gross margin leverage is still applicable, considering tariff dynamics, when thinking about gross margin puts and takes over the year.
Answer
John Lee, President and Chief Executive Officer, explained that MKS guides based on its best current view, but ramps can accelerate rapidly, and MKS often exceeds its guidance range. He added that MKS is ramping as fast as possible, and customers would likely take more if available. Ram Mayampurath, Executive Vice President and Chief Financial Officer, confirmed that 50% incremental gross margin leverage is still applicable. He noted that MKS mitigated tariff costs dollar-for-dollar by Q4 2025 and is now focused on mitigating the margin impact, expecting volume and the right mix to restore gross margins to 47%.
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