A recent analysis by UBS suggests that SK hynix is poised to lead the next-generation AI memory market, driven by a key chip redesign and shifting market dynamics.
The catalyst for this shift began in early 2026 when NVIDIA raised its performance targets for the HBM4 memory used in its upcoming Rubin AI platform. This move forced all major suppliers—SK hynix, Samsung, and Micron—to undertake a "partial redesign" of their chips late in the development cycle. This unexpected change created an opportunity for suppliers to renegotiate terms and re-establish their value.
First, this redesign appears to have played to SK hynix's strengths. UBS believes the company is far enough along in this process to secure a dominant 60% market share for the initial Rubin GPU shipments. This is supported by a series of industry reports from late 2025 and early 2026, which highlighted SK hynix's early HBM4 samples and readiness, positioning it as the primary partner for NVIDIA.
Second, the redesign and tight supply have given memory makers significant pricing leverage. For months, the price gap between high-end HBM and standard DRAM had been narrowing. Now, with the entire industry scrambling to meet NVIDIA's new demands and facing packaging constraints like TSMC's CoWoS, suppliers can push for higher prices. UBS forecasts this will culminate in a dramatic 36% year-over-year jump in HBM average selling prices (ASPs) in 2027, a sharp increase from its previous 6% estimate.
These forecasts are not just theoretical; they align with broader market data. The total HBM market is expected to surpass 30 billion gigabits in 2026. A 60% share for SK hynix would be around 18 billion gigabits, which is very close to UBS's 18.4 billion gigabit forecast. The competitive landscape also supports a three-supplier model, with reports of Samsung and Micron also shipping HBM4 samples, justifying UBS's assumed 60/30/10 split between SK hynix, Samsung, and Micron, respectively.
In essence, NVIDIA's push for more powerful AI chips has inadvertently reset the HBM market. It created a technical hurdle that SK hynix seems to be clearing first, allowing it and other suppliers to reclaim pricing power that will define the 2026-2027 memory cycle.
- HBM (High Bandwidth Memory): A type of high-performance memory used in GPUs and other processors for AI and high-performance computing. It stacks memory chips vertically to achieve faster data transfer speeds.
- Rubin Platform: NVIDIA's next-generation GPU architecture, planned for release in 2026, which will be a major driver of HBM4 demand.
- ASP (Average Selling Price): The average price at which a particular product is sold. It's a key metric for measuring a company's profitability.