SK hynix became Kioxia's largest shareholder, without a single vote

Kioxia's largest shareholder changed from Toshiba to a special purpose company funded by SK hynix. That company holds 14.2% of Kioxia. Toshiba is left with 14.1%.

SK hynix-backed fund becomes top shareholder of Japan's Kioxia (Seoul Economic Daily, 2026-08-11)

출처: en.sedaily.com

That report explains the change from the selling side. Toshiba sold about 5.44 million shares between 22 July and 3 August, and has released about 35.88 million shares so far this year. The ranking flipped not because someone bought in, but because the seller kept selling.

The gap at the top is 360,000 shares

The original post puts the stake a shade higher than this report does, in the second decimal place. The difference looks like a one day gap in the count date, and either figure leaves the same conclusion, which is that it is more than Toshiba holds.

The stake arrives first and the vote arrives later

SK hynix put roughly 1.3 trillion won into that company, and it did so through convertible bonds. A convertible bond is a loan that carries the right to turn into shares later. Until it is turned, it is a loan, and a lender does not raise a hand at a shareholder meeting.

The original post makes the same point. Getting to votes means passing competition and antitrust review in several jurisdictions, and the Japanese government, which wants to protect its domestic chip supply chain, is unlikely to wave it through. SK hynix committed about 4 trillion won to Kioxia back in 2018, routed through two special purpose companies. One of them sold its entire holding in June as Bain Capital exited, and the one that remains is the vehicle now sitting at the top.

What to read next is Kioxia's own disclosure

Two things split from here. If Toshiba keeps trimming what is left of its 14.1%, the gap at the top widens and the SK hynix side hardens its position without buying a share. If instead the conversion process starts, the story stops being about percentages and becomes about the review. That is the room where regulators decide whether the second and third largest NAND makers can sit under one roof. Whether the number of firms setting NAND prices drops by one is settled there, and only then does this news reach a memory price list. What this news changed today is the first line of a shareholder register, not the result of a vote.