PDF Solutions (PDFS): A Semiconductor Software Winner Returned 52% in Q2

Riverwater Partners, an investment management firm, reported that PDF Solutions, Inc. (NASDAQ:PDFS) delivered a 52% return in the second quarter of 2026, according to the company's Q2 2026 investor letter. The software provider, which offers yield analytics and data solutions for semiconductor manufacturers, outperformed the Russell 2000 in Q2, although the broader benchmark experienced a strong rally driven by AI investment and renewed interest in higher-beta stocks.

Riverwater Partners' analysis of PDF Solutions' performance highlighted the company's strategic positioning in energy, materials, and financial sectors, while acknowledging that healthcare and consumer discretionary sectors underperformed due to the fund's preference for more stable investments. The firm maintained a cautious yet optimistic outlook, focusing on market dislocations and undervalued opportunities, including AI infrastructure providers, healthcare innovators, and energy businesses trading below intrinsic value.

Notably, PDF Solutions' shares had a one-month return of -7.31% and had climbed 117.56% over the past 52 weeks, with a market capitalization of $1.89 billion. The company's strategic investor added a 1% position in PDF Solutions during the quarter, offsetting some of the gains by selling Veeco Instruments (VECO) shares. Despite PDF Solutions not being among the top 40 most popular stocks among hedge funds, 29 hedge funds held the company at the end of Q2 2026, compared to 18 in the previous quarter.