PDF Solutions: Sell as DFI E-Beam Capex Intensity and 10.6% SBC Leave Shares at 1.53x DCF
Exensio fab analytics and DirectScan e-beam systems drive 18.5% revenue growth and 8.2% GAAP EBIT margin, yet 16.8% tool capex intensity turns free cash flow negative at $30.97 per share.
Score Locked · Full AccessResearchPublished Nov 9, 2026 · Data as of Jun 30, 2026· 2 min read · 2 exhibits
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PDF Solutions (`PDFS`) occupies a specialized, mission-critical niche in the global semiconductor supply chain, linking fabless chip designers, leading-edge logic and memory foundries, and outsourced semiconductor assembly and test (OSAT) vendors through its
Our variant perception lies not in questioning PDF Solutions' engineering moat inside semiconductor fabs, which is formidable, but in exposing the accounting disconnect between its GAAP income statement and its capital-intensive cash flow statement. Because PDF Solutions manufactures proprietary DirectScan / DFI e-beam inspection tools and retains ownership of those multi-million-dollar machines on its own balance sheet while leasing them under multi-year bundled Analytics contracts, capital expenditures surged nearly fivefold from $8.41M in FY2022 (5.66% of revenue) to $32.63M in FY2025 (14.90%) and $40.51M over the trailing twelve months (16.80% of revenue), far exceeding $6.30M in TTM depreciation expense.
[1] Consequently, $38.70M in positive GAAP operating cash flow turns into -$1.81M of negative GAAP free cash flow (-0.75% margin) and -$27.33M of SBC-burdened Owner FCF burn (-11.33% margin). [1]
At $30.97 per share, equity markets grant `PDFS` a pure-software valuation without deducting the cleanroom capital required to manufacture its growth engine. Even when our calibrated 3-statement DCF explicitly looks past the current DFI capex wave and credits PDF Solutions with a normalized 16.0% post-capex Owner FCF margin plus $48.37M in net cash, base-case intrinsic value is $20.27 per share (-34.5% downside), and even our $31.42 Bull Case offers just +1.5% upside from spot, creating an unattractive asymmetric skew that warrants a Sell.
Source: PDF Solutions, Inc. SEC Form 10-K and Q2 2026 Form 10-Q filings.
Exhibit 2Data Exhibit
Revenue compounded to $241.2M while DFI equipment CapEx compressed FCF margin from +16.1% to -0.8%
Filed annual and TTM GAAP revenue (primary bars) and GAAP free cash flow margin (secondary line).
Revenue
FCF margin
Source: PDF Solutions, Inc. SEC Form 10-K and Form 10-Q filings.
PTC: Hold as 37.8% Industrial CAD and PLM Margin Trades 14% Above Base DCF
PTC's Creo CAD and Windchill PLM digital thread generates an 84.5% gross margin, 37.8% GAAP operating margin, and 1.02x R&D payback, but 11.0% revenue growth at $169.41 prices shares 13.9% above our $148.79 base DCF.
