Silicon Analysts Weekly for the week of 2026-06-22 to 2026-06-29: Silicon Analysts Weekly: HBM4 volume shipping widens, DRAM crunch deepens. A sourced, provenance-marked briefing on AI-chip supply-chain and pricing movements — HBM spot prices, wafer pricing, foundry and CoWoS capacity, per-chip bill-of-materials cost, and HBM qualification status — derived from public data and human-reviewed. Part of the Silicon Analysts semiconductor data layer.
The take
Samsung and Micron have both advanced to volume shipping of HBM4 for Vera Rubin, while SK Hynix holds an estimated 70% HBM4 bit-share — consolidating the supply picture around three qualified vendors. Simultaneously, a severe DRAM shortage has pushed 8GB module costs up 8.5x, squeezing smaller manufacturers out of the market. South Korea's $576B investment commitment with Samsung and SK Hynix signals capacity relief, but execution risk is already pressuring both stocks.
What moved this week
TSMC CoWoS CoWoS CoWoS capacity — up — Q4 2026 ~105k–127k wafers per month by Q4/end-2026 (JPMorgan at 105k vs. a separate estimate at ~127k) vs Q4 2027 141k wafers per month by 4Q27 (
source)
SK Hynix HBM bit share — down — ~55–58% (readings range 50–62%) vs 2025 55% (
source)
TSMC CoWoS CoWoS pct locked — flat — Fully booked; top 3 customers account for >85% of capacity vs 2026-06 fully booked through mid-2026 (
source)
SK Hynix HBM4 HBM bit share — up — 2026 ~70% vs ~62% (
source)
SK Hynix HBM HBM bit share — up — 2025 55% vs 70% (
source)
SK Hynix HBM3E hbm spot price — down — 2026 ~$10/GB (
source)
Supply-chain & pricing signals
Soitec and ZenSemi scale 300mm BCD-on-SOI for AI datacenter power electronics — Strategic supply chain diversification for critical power management chips in AI datacenters. Partnership addresses EV and industrial demand while reducing reliance on traditional bulk BCD suppliers, improving reliability for power-intensive AI infrastructure. (
Manila Times)
Huawei overtakes Nvidia in China AI chip market share, defying export controls — U.S. export restrictions accelerating Chinese domestic semiconductor self-sufficiency and fracturing global AI chip market. Huawei and indigenous Chinese chipmakers gaining dominance in large domestic market, reducing Nvidia/AMD addressable opportunity and validating long-term Chinese chip independence strategy. (
AP News)
South Korea announces $576B AI chip investment with Samsung and SK Hynix — Massive government-backed capacity expansion in HBM and memory production addresses AI datacenter demand constraints. New fabrication sites in southwest Korea and packaging cluster near Seoul will significantly increase global memory supply within 2-3 years, potentially alleviating current supply bottlenecks for AI infrastructure. (
CNN)
Severe DRAM shortage creates existential crisis for smaller chip consumers — Memory costs have surged 8.5x for 8GB DRAM modules, forcing small manufacturers to either absorb losses or reduce product specs. Only mega-cap players can secure adequate supply, creating a two-tier market that consolidates demand toward industry giants. (
CNBC)
China expands export controls on Japanese defense-linked entities and dual-use semiconductors — Escalating geopolitical fragmentation of semiconductor supply chains between U.S.-allied and Chinese ecosystems. Japan's defense and aerospace sectors face semiconductor procurement risks, accelerating regionalization of chip sourcing and complicating global component supply for defense-adjacent industries. (
CNBC)
Samsung and SK Hynix shares fall on $1.3T decade-long spending plan — Market concern over massive capex requirements and execution risk overshadows strategic benefits. Heavy capital deployment may pressure profitability and cash flow in near-term, triggering investor rotation despite long-term capacity gains. (
CNBC)
Supply-chain & pricing signals
Huawei overtakes Nvidia in China AI chip market share — U.S. export controls are accelerating domestic Chinese chip adoption, fracturing the global AI chip addressable market. (
AP News)
South Korea announces $576B AI chip investment with Samsung and SK Hynix — New fabrication sites and a packaging cluster near Seoul target HBM and memory capacity expansion within a 2–3 year horizon. (
CNN)
Severe DRAM shortage drives 8.5x cost surge on 8GB modules — Only large-volume buyers can secure adequate supply; smaller manufacturers face margin compression or spec reductions. (
CNBC)
China expands export controls on Japanese defense-linked entities and dual-use semiconductors — Japan's defense and aerospace sectors face new procurement risks, accelerating regional chip sourcing fragmentation. (
CNBC)
Soitec and ZenSemi scale 300mm BCD-on-SOI for AI datacenter power electronics — Partnership targets supply-chain diversification for power management chips in power-intensive AI infrastructure. (
Manila Times)
HBM watch
Samsung × NVIDIA Vera Rubin (HBM4 12-Hi): Qualified
→ Volume shipping — Samsung announced world-first HBM4 mass production shipment at 11.7 Gbps with 12-layer stacking. (
source ·
timeline)
Micron × NVIDIA Vera Rubin (HBM4): Qualified
→ Volume shipping — NVIDIA CEO confirmed Micron passed HBM4 certification for Vera Rubin as of June 2026. (
source ·
timeline)
Micron × NVIDIA Vera Rubin (HBM4 16-Hi): Not started
→ Sampling — Micron shipped 48GB 16-Hi HBM4 samples to customers, demonstrating 16-die stacking capability. (
source ·
timeline)
Samsung × AMD (HBM4): Not started
→ Qualified — Samsung passed HBM4 qualification for AMD per chip industry sources cited by Reuters. (
source ·
timeline)
SK Hynix × NVIDIA Vera Rubin (HBM4 16-Hi): Not started — SK Hynix unveiled a 16-layer 48GB HBM4 device at CES 2026 with mass production planned for Q3 2026. (
source ·
timeline)
This week's analysis
2024 Capacity Expansion: AI Accelerators, GPUs, HBM, and Wafer Starts Per Month at TSMC, Samsung, and Intel — A comprehensive analysis of 2024 semiconductor capacity expansion for AI accelerators, GPUs, and HBM — covering wafer starts per month, advanced packaging constraints, and strategic moves by TSMC, Samsung, and Intel.
AI engines are citing
Tool spotlight
Cost Bridge — Side-by-side manufacturing-cost breakdown across 13+ AI chips.
Sources this week
Sourced public intelligence, not insider data; status changes are human-reviewed before publication. Full timelines on the HBM Qualification Tracker.