The setup
Phison isn't a fab and it doesn't make NAND. It's the world's leading independent flash-controller house — the silicon and firmware that turn raw NAND into a usable SSD — and it sells both the controller ICs and turnkey modules: client and enterprise SSDs (the Pascari enterprise line), USB/UFS, and increasingly an AI-storage stack built around aiDAPTIV+, its flash-tiered edge-inference platform. That dual identity is the whole story of this print. A controller maker buys NAND wafers, adds its own value, and resells finished product; when NAND tightens, its input costs rise — but in a genuine shortage, the finished-goods ASPs and the value it adds on top rise faster. Q1 FY26 (the quarter ended , with the earnings call on ) is what that looks like when it breaks the company's way at full force.
The backdrop is the cleanest memory upcycle since 2017–18: AI datacenter buildout is vacuuming up HBM and high-density DRAM/NAND, the leading suppliers have tilted capacity toward AI parts, and commodity/legacy supply has tightened as a second-order effect. Into that tape, the controller layer just posted numbers that read like a wafer maker's.
The numbers
Operating revenue of NT$40.967 billion, up 196.0% year-on-year and 79.7% sequentially — an all-time quarterly record. Gross profit of NT$25.118 billion at a 61.3% gross margin, up roughly 20 points sequentially and 30 points YoY; for a controller-and-module business that historically runs in the high-20s-to-30s, a 61% gross margin is the single most arresting line in the release. Operating income of NT$14.841 billion (36.2% operating margin, versus 14.6% last quarter and 8.4% a year ago) on a 1,177% YoY jump. Net income of NT$15.175 billion and EPS of NT$68.80, against NT$21.74 the prior quarter and NT$5.53 a year ago.
The context that frames the whole quarter: FY2025 — the entire prior fiscal year — produced revenue of NT$72.66 billion and net income of NT$8.74 billion (EPS NT$39.74). This one quarter did NT$15.18 billion of net profit and NT$68.80 of EPS — meaning Q1 FY26 alone out-earned the full prior year on both the bottom line and per share, while booking more than half of FY2025's entire revenue in three months. That is the signature of a cyclical inflecting violently, not a steady compounder grinding higher. Phison did this even while plowing NT$8.67 billion (21% of revenue) into R&D — opex it is choosing to carry, not being forced to.
The rest of this dive is for paid subscribers.
The headline numbers are above. The 6 sections below carry the mechanism, the peer read, the valuation work, and the dated tests that decide it.
- What's actually driving it
- How peers read this
- Valuation reality check
- What we'd watch from here
- Listed-market read-through
- Bottom line
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