FormFactor (FORM): The HBM Toll Booth Just Beat by 34% — And Its Own CFO Told You the Margin Isn’t Real

FormFactor, Inc. (FORM) Q2 2026 — FormFactor (FORM) reported Q2 FY2026 (quarter ended June 27) on July 29. Revenue was a record $258.2M, +14.2% q/q and +31.9% y/y, $18.2M above the midpoint of the company's own $235-245M guide. Non-GAAP EPS of $0.82 crushed the ~$0.61 consensus (a 34% beat); GAAP EPS was $0.71 on $56.2M of net income. Non-GAAP gross margin hit 53.3% (+430 bps q/q). Q3 revenue is guided to $270M +/- $10M vs ~$247M consensus, with $0.86 non-GAAP EPS. The stock fell 27% in the eight sessions into the print, then rose 26.2% on it, closing at $105.28 — three cents below where it traded on July 20. Why we're cautious: the CFO said the sustainable non-GAAP gross margin is ~51%, not 53.3%; Q3 DRAM revenue is guided flat with a shift out of HBM into DDR; FY26 free cash flow is only ~$85M (a ~1% yield) after $140-170M of Farmers Branch capex; and $105.28 requires 18.2% owner-earnings growth for a decade. Our owner-earnings DCF lands at ~$70. Our call: HOLD, 3/5. A genuinely outstanding quarter attached to a genuinely stretched price. The good: an all-time revenue record of $258.2M, a 34% EPS beat, non-GAAP gross margin up 1,500 bps over four quarters, EPS tripled, and a Q3 guide $23M above consensus. High Bandwidth Memory was ~two-thirds of DRAM revenue, the Systems segment set a record at $48.5M (+74% q/q), and co-packaged optics — guided at $10-20M for 2026 — will clear $20M by the end of Q3 alone. FormFactor is a real AI-supply-chain toll booth: a probe card is a consumable engineered for one specific chip design, so revenue tracks wafer starts AND the rate of design change. The catch: the CFO explicitly broke the 53.3% gross margin into thirds — a third durable, a third volume, a third non-recurring (IEEPA tariff refunds and precious-metal reclaim) — and said the sustainable baseline is ~51%. Q3 revenue growth decelerates from +14.2% to +4.6%, DRAM goes flat with a mix shift from HBM to DDR, disclosed 10%+ customers are 35% of revenue, and HBM share is strong at only two of the three major manufacturers. Buybacks are zero while $140-170M goes into the new Farmers Branch, TX plant, which isn't accretive until 2028. And in the last cycle, a 14% revenue decline produced a 39% EPS drawdown. THE CALL: HOLD (3/5, A REAL TOLL BOOTH, ALREADY PRICED THROUGH ITS OWN 2030 TARGET) — base-case value ~$70.00 vs ~$105.28 today. What to watch: The ~51% non-GAAP gross margin baseline actually holding in Q4 once the IEEPA tariff refunds are gone; DDR replacing HBM in the Q3 DRAM mix without giving back margin; the GPU probe card revenue that starts shipping this quarter showing up as a real number; and co-packaged optics running well past $20M for the year. The risks: the DRAM mix shift proving expensive, Farmers Branch inefficiency running past 2027, a competitor closing the gap at the third HBM manufacturer, and the memory cycle itself — in 2021-2023 a 14% revenue decline produced a 39% EPS drawdown. Also on YouTube: @ChargedAlpha DISCLAIMER: For informational and educational purposes only. Not financial advice. Do your own research before any investment decision.