LongPDFSJune 30, 2026

William Blair Growth Fund on PDF Solutions, Inc.

Thesis

PDF Solutions provides data software and engineering services that help semiconductor companies improve yield, performance and efficiency across the product lifecycle. Revenue grew 26% year over year in the quarter as demand for the Exensio platform drove stronger-than-expected earnings. The fund sees value in PDF Solutions' ability to unify fragmented manufacturing data so customers can build proprietary AI capabilities or use the company's turnkey tools. As AI adoption expands across the semiconductor industry, it expects demand for PDF Solutions' products to inflect higher.

“As AI adoption continues to accelerate across the semiconductor industry, demand for the company’s products should inflect higher.”
William Blair Growth Fund — Growth Fund Quarterly Review

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