Kioxia's Leverage Overhang Survives a Data Correction as AI Spending Doubts Bite

A correction to Tokyo Stock Exchange data has upended one of the few comforting narratives around Kioxia: that heavily indebted buyers had already been shaken out. They haven't. The revised figures show margin buying actually rose, leaving the memory-chip maker without the deleveraging signal investors had briefly believed was in place.

The original exchange data pointed to a decline in margin-financed long positions to 31.17 million shares. After the correction, the figure stood at 46.94 million shares — a reversal that turns an apparent retreat into an increase. The distinction matters. Falling leveraged holdings can suggest that investors have already unwound their borrowed bets, clearing the way for a recovery. The corrected numbers offer no such comfort. Should the share price weaken further, leveraged buyers could come under pressure and be forced to sell at a loss.

¥920 Billion at Stake

How large that exposure looms is clear from the October 15 snapshot: margin-financed long positions were worth ¥920 billion, the highest of any company listed on the Tokyo bourse. Tomoichiro Kubota, chief market analyst at Matsui Securities, describes a substantial decline in such positions as the usual precondition for a share-price rebound. No such signal is visible yet. The data revision thus undercuts hopes that selling pressure from leveraged positions has already eased meaningfully.

The stock has had a rough stretch. Yesterday it posted a one-day move of -10%, caught in broad selling across semiconductor equities — a sector-wide wave rather than a response to any fresh company announcement. The overnight session in the US set the tone: the Philadelphia Semiconductor Index dropped 6.72%, with Micron, Nvidia and Intel all retreating. That backdrop weighs on Kioxia regardless of its own news flow.

Should investors sell immediately? Or is it worth buying Kioxia?

The AI Payback Question

Investors, according to media reports, are asking whether the enormous sums being poured into data centers and artificial intelligence will generate adequate returns. The focus is no longer solely on technical demand for memory products; how the market judges the economics of that spending matters just as much. Nikkei reported today that these doubts spilled over into Kioxia's shares following Meta's results. New products and a weak share price need not contradict each other — they speak to different expectations about the business.

Against that, the operating picture remains robust. Media reports indicate Kioxia has guided toward revenue of ¥2.39 trillion for July to September 2026. TrendForce, meanwhile, expects NAND contract prices to climb 15–20% quarter-on-quarter in the final three months of 2026 — a forecast, not a realized improvement. On the product side, the company reported on Tuesday progress with its LD4 enterprise SSD series and the start of sampling for selected customers, built on the E1.L format and QLC storage from the eighth-generation BiCS FLASH. Sampling is a long way from broad commercial sales, but it marks concrete product momentum while the market debates investment returns and positioning risk.

A Credit Counterweight

There was also good news on financing. On October 13, Kioxia announced that S&P Global Ratings had lifted its long-term issuer rating to BBB with a positive outlook — a counterweight to the sour market mood, though one that neither dispels sector-wide valuation doubts nor removes the potential selling risk from leveraged positions.

Kioxia at a turning point? This analysis reveals what investors need to know now.

A report on Monday quoted an analyst's warning that approaching deadlines on margin-financed positions could trigger additional selling pressure. That describes a risk, not evidence that such sales caused the recent decline. The distinction is worth keeping in mind: skepticism about heavy technology spending concerns the industry environment, while leveraged positions can sharpen the trading dynamics of a single stock. Both can act at once without the underlying business changing at all.

The next hard checkpoint arrives on October 30, when Kioxia reports quarterly results. That release will test the lofty revenue expectations and the broader outlook. For investors, two layers need separating. Strong figures could shore up the fundamental case — but they will not automatically lift the selling pressure from leveraged holders. The corrected exchange data shows precisely why an operational improvement and a durable stabilization of the share price need not arrive together.

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