Memory Runs Dry: Samsung and SK Hynix Drop Below 10-Day Supply as HBM4 Devours Capacity
Samsung and SK Hynix, controlling 64% of global DRAM revenue, have less than 10 days of inventory. TrendForce reports Q2 2026 DRAM revenue at $154.73B, up 59.5% from Q1. HBM4 production consumes 3x wafer capacity, worsening supply. Samsung and SK Hynix shares rose 5.7% and 8.3% respectively, as investors anticipate sustained pricing power.
How this was made
The 30-second read
Why it matters
The tight supply scenario creates short‑term bullish pressure on memory stocks, especially those with HBM exposure.
Market read
Memory shortage could drive sector‑wide price gains as AI workloads increase demand for high‑bandwidth memory.
What to watch
Potential supply‑side improvements from new fab capacity or alternative suppliers could mitigate the shortage.
Background
The article reports a first‑time sub‑10‑day inventory level for the two dominant Korean DRAM producers, linking it to the HBM4 rollout and AI demand.
Ticker impact
Samsung Electronics inventory fell below 10 days, prompting a 5.7% share rise on Monday.
Short-term bullish pressure; consider buying on dips.
Sub‑10‑day inventory is unprecedented, limiting buffer and supporting pricing power.
SK Hynix inventory fell below 10 days, driving an 8.3% share jump on Monday.
Continued upside; monitor for supply‑related news.
Same inventory crunch as Samsung, with HBM4 ramp accelerating demand.
Micron highlighted its HBM4 allocation and reported a 65.5% revenue jump, indicating exposure to the shortage.
Potential upside if shortage persists; watch inventory updates.
Company’s focus on server DRAM aligns with AI‑driven demand surge.
Market effects
Memory sector faces unprecedented supply tightness, likely boosting prices across DRAM and HBM products.
Korean memory makers see immediate share gains; US memory stocks may follow.
AI‑driven demand worldwide amplifies the impact of the Korean inventory crunch.
Counterpoint
If inventory data proves overstated, a rapid price correction could occur.
Key entities
- companySamsung Electronics
Korean memory leader with sub‑10‑day inventory.
- companySK Hynix
Korean memory maker facing similar inventory constraints.
- companyMicron Technology
US memory supplier benefiting from HBM4 demand.
