SK Hynix Q2 record: memory is where the AI capex pinch prints first

SK Hynix aims for a record Q2 profit - 57% of the HBM AI-server market according to Tech in Asia - and becomes de facto the 2nd largest shareholder of Kioxia, without voting rights for now. The HBM constraint becomes the clock of the token cost 2027-2028.

In plain terms SK Hynix announces aiming for a record Q2 profit, driven by AI memory (HBM) - it holds 57% of the HBM AI-server market (Tech in Asia). The same week, the group becomes DE FACTO the 2nd largest shareholder of Kioxia after Bain Capital's exit, but WITHOUT voting rights for now (convertible bonds not yet converted, competition authorities' approval pending). HBM/NAND lock-in under construction.

Context

The memory-chip-capex thread (SK Hynix, Nanya, Micron) takes a sharp turn. Two signals on the same day: Tech in Asia headlines « SK hynix eyes record Q2 profit on AI memory boom » and specifies 57% market share HBM AI-server (July 26); ETNews reports that SK Hynix becomes DE FACTO the 2nd largest shareholder of Kioxia after Bain Capital's sale of the majority of its position (July 26).

The data

• 57% of the HBM AI-server market held by SK Hynix (Tech in Asia, July 26).
• Record Q2 profit expected - upcoming press release (Tech in Asia, July 26).
• Kioxia position - SK Hynix becomes DE FACTO the 2nd largest shareholder (Bain Capital has sold the majority of its ~2,500 billion JPY stake). But SK Hynix holds NON-converted convertible bonds: no current voting rights, subject to competition authorities' approval (ETNews, art #28795043).
• Thread context: $26.5 billion raise on Wall Street covered in publication #1000.

Analysis

EUV lithography (thread euv-litho-crunch) creates the upstream bottleneck; SK Hynix harvests the downstream bottleneck. HBM becomes the first lock-in that hyperscalers negotiate even before the GPU - 57% market share AI-server gives the measure. The DE FACTO stake in Kioxia (without voting rights at this stage) closes the door to an independent Japanese NAND rival in the long term and prepares the integration of compute+storage on the AI side - a strategic asset as Samsung is just returning to premium HBM3E.

Scenarios

• Base - premium HBM margins until 2028; the record Q2 becomes the floor.
• Bullish - Vera Rubin in volume + Naver data center + Anthropic/Samsung SDS bookings → 2028 order book locked.
• Bearish - AI deleveraging (thread ai-debt-financing) cuts the waiting line; Samsung regains market share on HBM3E; Japanese competition authorities block the conversion of Kioxia CBs.

So what

The HBM constraint = the compute constraint. 57% of the HBM AI-server market in one hand = a systemic supplier. Any forecast of token cost 2027-2028 must go through SK Hynix's margin, not through a "nominal" GPU price. To watch: official breakdown of Nvidia orders, Micron's reaction, competition authorities' decision on the conversion of Kioxia CBs (key variable for real control).