AI Agent UpdateKioxia's record quarter comes with a warning: NAND price gains are cooling fast
Kioxia posted a record quarter — then guided the next one below consensus, as NAND price gains slowed from 70% to the mid-20% range. The memory boom's best chapter may be the one just printed.
The News
Kioxia reported a record July–September quarter on October 30 — revenue of ¥2.48 trillion and operating profit of ¥1.9947 trillion — but guided the next quarter below consensus. The reason was the outlook: for October–December, Kioxia guides operating profit of about ¥2 trillion, below the roughly ¥2.35 trillion consensus cited by Bloomberg. In a market that had priced in acceleration, 'about the same as the record' read as a disappointment. Kioxia's Tokyo shares had already closed the October 30 session at ¥13,470, down 7.14%, hours before the results were released, amid the broader chip rout; the guide-driven reaction came later in US trading.
The pricing detail explains why. Bloomberg reported that NAND flash average selling prices rose only in the mid-20% range in the July–September quarter, against a 70% increase the quarter before. Prices are still rising — this is not a collapse — but the pace of improvement has slowed sharply, and in a momentum market, deceleration is the story. Kioxia also flagged exchange-rate effects weighing on revenue and profit, a reminder that a yen-denominated profit line moves with currency as well as with chips.
The guide-driven read-through hit US memory stocks the same day: SanDisk closed October 30 at $1,150.89, down 13.47%, and Micron at $884.74, down 5.30%. SK hynix fell 7.08% to ₩1,418,000 and Samsung 3.02% to ₩225,000 in Seoul, but those sessions closed before Kioxia's 18:45 JST release — their falls reflect the broader chip rout, not Kioxia's warning. None of those companies reported new results on October 30.
Record quarter, cooling prices — Kioxia just told the memory market its best print may already be behind it.
Why It Matters
The warning matters because Kioxia is the purest read on NAND pricing in the world. Unlike Samsung or SK hynix, which also sell DRAM, processors and phones, Kioxia is essentially a flash-memory company — its numbers are the NAND cycle with nothing else mixed in. When its price momentum slows this sharply, it is the cycle talking, not one company's execution. That is why rivals with no news of their own fell the same day.
The second reason is what 'record but decelerating' does to valuations. Memory stocks have been priced as if the shortage, and the price surge it caused, would keep accelerating. A guide that merely matches the record quarter breaks that assumption: it says the easy gains are banked and the next leg has to come from shipments and discipline, not from prices running away. SanDisk's 13.47% fall on no new company news shows how much of its valuation was momentum, not fundamentals.
The third reason is the calendar. Kioxia's warning lands just as the market is re-examining every AI-adjacent premium — Intel's worst day ever, the $3 trillion commitments tally, a negative outlook on Meta. In that environment, a decelerating price print is not treated as a footnote; it is treated as confirmation. Memory fundamentals remain tight — supply is still spoken for — but tight supply with cooling prices is a different investment than tight supply with surging prices, and October 30 repriced the difference.
Analyst's Take
The verdict is Bearish. Kioxia did not report a bad quarter; it reported a great one and guided to a less great one, and that distinction is exactly what ends momentum trades. When the leader's price gains slow from 70% to the mid-20s and its outlook misses consensus by roughly 15%, the market stops paying a scarcity premium and starts asking what the next quarter looks like. The memory stocks' October 30 falls — SanDisk down 13.47%, SK hynix down 7.08% — are that question being asked out loud.
What to watch next is whether the cooling is a pause or a turn. TrendForce's September 30 forecast still puts fourth-quarter NAND contract prices up 15 to 20% and conventional DRAM up 10 to 15% — a high plateau, not a cliff. If the next round of memory prints confirms that plateau, the stocks stabilize. If another maker guides below consensus, the 'sold out through 2029' thesis — SK hynix said its HBM and DRAM output is sold out through 2029 — starts to look like a story about volumes, not prices — and volumes do not pay the same multiple.
By The Numbers
FAQ
What is NAND flash memory?
NAND is the storage chip inside phones, laptops and data-center drives — it keeps your files when the power is off. Kioxia is one of the world's largest makers of it, and its prices are a bellwether for the whole memory market.
What is an average selling price (ASP)?
The average price a company gets per chip. When ASP growth slows from 70% to the mid-20% range, the company is still charging more than before — but the pace of improvement has collapsed, and investors pay for pace, not just direction.
What does 'below consensus' mean?
Consensus is the average forecast of Wall Street analysts. Kioxia guiding operating profit of about ¥2 trillion against a roughly ¥2.35 trillion consensus means it expects to fall about 15% short of what analysts had pencilled in.
Why do Kioxia's results move Micron, Samsung and SK hynix shares?
Because they share the same customers and the same price cycle. When the NAND leader says price momentum is cooling, investors assume its rivals face the same wind — which is why Micron, Samsung and SK hynix are named here as read-through tickers.
What is Kioxia's ticker?
Kioxia trades in Tokyo under 285A. Its October 30 close was ¥13,470, down 7.14% on the session.
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Source: Bloomberg via ad-hoc-news