As of 7 September 2026
KB Securities estimates that memory inventories at Samsung Electronics and SK Hynix have fallen below 10 days of supply, raising concerns that surging AI infrastructure spending could create an unusually tight memory market in 2027.
KB Securities expects 2027 to bring the tightest memory supply conditions in the industry's history, with DRAM and NAND bit-demand growth exceeding supply growth by more than 10 percentage points.
The warning came as Korean semiconductor stocks surged on 7 September, with SK Hynix rising 8.26% and Samsung Electronics gaining 5.68%.
DRAM, NAND and HBM: What They Do in AI
- DRAM: Fast, temporary memory used by AI servers to quickly access data and instructions during computing tasks.
- NAND: Non-volatile storage used in enterprise SSDs to store datasets, AI models, and other data.
- HBM: High-bandwidth memory placed close to AI accelerators such as GPUs, enabling rapid data transfer for AI training and inference.
AI Infrastructure Spending Is Driving HBM and Memory Demand
KB Securities expects AI infrastructure investment to keep expanding as hyperscalers increasingly monetize AI through cloud services, model hosting, token-based billing, and agentic AI applications.
That spending is particularly important for memory manufacturers because AI servers require multiple types of memory, including HBM, server DRAM, and enterprise SSDs.
KB's 57% estimate and TrendForce's 68% estimate use different methodologies and definitions, so they should not be treated as directly comparable consensus forecasts.
HBM4 Demand Could Tighten DRAM Memory Supply in 2027
A major part of the supply story is HBM4.
KB Securities estimates that HBM4 consumes roughly three times the wafer capacity of conventional DRAM. As memory manufacturers shift production capacity toward HBM for AI accelerators, less wafer capacity may remain available for conventional memory products.
At the same time, AI servers require HBM alongside conventional server DRAM and enterprise SSDs. This could put pressure on several parts of the memory market simultaneously.
The outlook is not uniform across all memory products, however. While KB Securities expects DRAM and NAND demand growth to outpace supply in 2027, TrendForce has separately indicated that NAND Flash supply conditions could loosen in the second half of 2027 as new capacity comes online.
TrendForce estimates that HBM and RDIMM together will account for 51% of DRAM supply bits in 2026, reflecting suppliers' growing focus on server applications.
DRAM, SSD and HBM Prices Are Rising as Memory Supply Tightens
The supply pressure is already visible in memory pricing.
TrendForce reported that server DRAM contract prices rose 64% cumulatively in H2 2025 and projected an approximately 270% cumulative increase in 2026. Enterprise SSD prices rose around 35% in H2 2025, with a projected 235% cumulative increase in 2026.
HBM contract prices are projected to rise 70–140% in 2027, although some long-term agreements signed from Q2 2026 include price ceilings that could limit further increases.
The latest industry data also highlights the strength of DRAM demand and pricing. TrendForce reported that DRAM industry revenue reached nearly $154.73 billion in Q2 2026, up 59.5% quarter over quarter, as higher conventional DRAM contract prices and AI-server demand lifted revenue.
Memory Supply Squeeze Could Benefit Memory ETFs
A memory supply squeeze occurs when demand for DRAM, HBM, and other memory products grows faster than manufacturers can expand supply. Falling inventories and constrained production capacity can give memory suppliers greater pricing power, pushing contract prices higher. For memory manufacturers, higher prices can translate into stronger revenue and margins if demand remains resilient.
Investor interest in the memory theme is also visible in ETFs. The Roundhill Memory ETF (DRAM) had $26.62 billion in assets under management as of 8 September 2026. Its latest holdings included Samsung Electronics at 25.14%, Micron Technology at 24.93%, and SK Hynix at 22.94%. Together, the three companies accounted for 73.01% of the ETF's portfolio, giving investors concentrated exposure to the global memory cycle.
The KraneShares AI & Technology ETF (AGIX) provides broader AI and technology exposure while also holding Samsung Electronics, SK Hynix, and Micron. As of 8 September 2026, the three positions represented 1.67%, 1.96%, and 1.97% of the portfolio, respectively.
Broader semiconductor ETFs can also benefit from stronger memory pricing. The VanEck Semiconductor ETF (SMH)provides exposure to the semiconductor sector, including Micron, although it does not provide the same direct exposure to Samsung Electronics and SK Hynix as DRAM.
For investors, the distinction is important: DRAM offers concentrated exposure to the memory cycle, AGIX combines AI and technology exposure with smaller positions in Korean memory companies, while SMH provides broader semiconductor exposure.
Samsung and SK Hynix Stocks Surge on AI Memory Demand
The supply outlook coincided with a powerful rally in Seoul on 7 September.
Foreign investors bought roughly ₩2.59 trillion of Korean equities, while institutions bought around ₩2.63 trillion. Retail investors were net sellers of approximately ₩6.82 trillion.
Renewed optimism over AI-driven memory demand helped fuel the semiconductor rally, with the gains in Samsung and SK Hynix significantly outpacing the broader Korean market.
Why Analysts Still See Upside
Despite the sharp rebound, some analysts continue to view Korean memory stocks as inexpensive relative to expected earnings.
Note: These figures use different measurement periods and methodologies and should not be treated as directly comparable.
KB Securities and Nomura value the stocks at around 3× projected 2027 earnings, highlighting the relatively low valuation despite the recent rebound. KB also expects Samsung and SK Hynix to deliver record earnings for three consecutive years, alongside continued shareholder returns.
DB Securities has separately raised its SK Hynix price target to ₩2.3 million from ₩2 million, adding to the bullish outlook among Korean semiconductor analysts.
SK Hynix ADR Technical Levels and Price Targets to Watch
TradingKey's technical analysis identifies the following levels for SK Hynix's ADR following its rebound from around $151.50:
TradingKey identifies a sustained break above $178.41 as an important confirmation level. Failure to hold the breakout could send the ADR back toward the $172.65 support zone.
Key Risks to the 2027 Memory Shortage Outlook
The bullish memory outlook still faces several risks:
- Hyperscaler AI capex could fall below KB's $1.3 trillion 2027 estimate.
- Memory manufacturers could add capacity faster than expected.
- HBM4 yields could improve, reducing the amount of wafer capacity required per unit of usable output.
- AI monetization could disappoint.
- Higher memory prices could eventually weaken demand.
- Semiconductor stocks could rise faster than underlying earnings justify.
Implications for GCC Investors
For GCC investors, developments in Samsung Electronics and SK Hynix provide a useful indicator of the broader global AI investment cycle. Changes in Korean semiconductor valuations, AI infrastructure spending, and demand for advanced memory can help assess whether the current AI cycle is broadening or losing momentum.
The theme also extends beyond Korean equities. GCC investors tracking global technology exposure can use Korean memory stocks, semiconductor ETF performance, and hyperscaler capital expenditure as complementary indicators when assessing the strength of AI-related investment demand.
This makes the Korean memory market a useful barometer for the wider semiconductor and AI cycle, rather than simply a regional equity story.
