Pdf Solutions Inc (NASDAQ: PDFS)

PDF Solutions provides comprehensive data solutions designed to improve yield quality and operational efficiency for semiconductor and electronics companies. Its platforms enable customers to manage large volumes of manufacturing data improve process control and accelerate time to market. The company focuses on turning data into a shared infrastructure that supports advanced analytics and artificial intelligence applications across the semiconductor ecosystem.

The company generates revenue from two categories: Platform fees and Volume based fees. Platform revenue includes software licenses excluding Cimetrix runtime licenses maintenance and technical support software as a service engineering services fixed fees for Characterization Vehicle systems and licenses and purchase contracts for DirectScan systems. Volume based revenue comes from Cimetrix runtime licenses secureWISE data and variable or royalty fees associated with Characterization Vehicle systems. Platform fees have historically represented the larger share of total revenue while Volume based fees provide a recurring stream tied to system usage.

The company operates through the following segments

• Platform: This segment offers software licenses excluding Cimetrix runtime licenses maintenance and technical support software as a service engineering services fixed fees for Characterization Vehicle systems DirectScan system licenses and purchases and related technical support services.

• Volume based: This segment derives revenue from Cimetrix runtime licenses secureWISE data and variable or royalty fees tied to Characterization Vehicle systems which are sometimes referred to as Gainshare.

PDF Solutions holds a differentiated position in the semiconductor data solutions market by offering an integrated platform that combines data acquisition analytics and AI capabilities. Key competitors include KLA Corporation Onto Innovation Synopsys Applied Materials and providers of internal analytics tools at integrated device manufacturers. Competitive advantages stem from its proprietary data standards AI ready architecture and broad portfolio spanning characterization connectivity and process control. The company’s focus on creating a common data language and enabling human governance with AI execution helps it address the growing complexity of semiconductor manufacturing.

The company serves a diverse customer base that includes integrated device manufacturers fabless semiconductor companies foundries equipment manufacturers electronics manufacturing services providers original device manufacturers and outsourced semiconductor assembly and test firms. While specific customer names are not disclosed a small number of large accounts represent a significant portion of revenue with three customers accounting for 53% of 2025 sales. This concentration highlights the importance of maintaining strong relationships with key accounts while the company continues to expand its reach across the global semiconductor industry.