SK Hynix Stock Surges 9% to All-Time High on AI Demand
TLDR
SK Hynix surged as much as 9% to an all-time high of 1,128,000 won on Tuesday.
The rally was driven by strong AI optimism and a broader tech sector upswing on Wall Street.
SanDisk is set to join the Nasdaq-100 on April 20, replacing Atlassian, boosting sentiment across the memory sector.
SK Hynix and SanDisk are jointly developing High Bandwidth Flash (HBF), a new memory layer for AI workloads.
Analysts at Korea Investment & Securities raised their full-year profit forecast for SK Hynix by 28%.
SK Hynix stock hit a record high Tuesday, powered by AI chip demand and SanDisk’s upcoming Nasdaq-100 inclusion — two tailwinds hitting at the same time.
The South Korean chipmaker’s Seoul-listed stock surged as much as 9% intraday, reaching 1,128,000 won. That marks a fresh all-time high for the company.
The move came on the back of a strong Monday session on Wall Street. Technology stocks led a broad rally, fuelled by continued enthusiasm around AI infrastructure spending.
SK Hynix is one of the primary suppliers of high-bandwidth memory, or HBM, which is a key component in AI processors built by companies like Nvidia. Demand for HBM has been growing faster than supply, giving SK Hynix meaningful pricing power.
Investors have been rewarding companies with exposure to the supply-constrained parts of the AI chip chain — and SK Hynix sits squarely in that category.
SanDisk’s Nasdaq-100 Inclusion Adds Fuel
SanDisk is set to join the Nasdaq-100 before the open on April 20, replacing Atlassian. The news sent SanDisk stock up 11.83% and lifted confidence across the broader memory and storage sector.
Index inclusions typically attract passive fund inflows, which can lift not just the stock itself but related names in the same space. SK Hynix was a clear beneficiary of that spill-over sentiment.
The two companies are also tied together by an ongoing technology partnership. SK Hynix and SanDisk are jointly developing High Bandwidth Flash, or HBF — a new memory layer designed to work alongside HBM in AI systems.
The goal of HBF is to bridge performance and capacity gaps in current AI hardware, particularly as data center and inference workloads continue to scale.
Analyst Upgrades and Pricing Strength
The record run is backed by improving fundamentals, not just market sentiment. Analysts at Korea Investment & Securities raised their full-year profit forecast for SK Hynix by 28%.
The upgrade was based on stronger-than-expected pricing for both DRAM and NAND memory products.
SK Hynix supplies key components to some of the largest technology companies in the world, including Apple and Nvidia. Its fortunes are closely tied to the health of the global AI buildout.
U.S. tech stocks have remained a driver of SK Hynix’s performance given those supply relationships.
The U.S.-listed equivalent of SK Hynix, trading under the ticker HXSCL, climbed over 7% during the same session.
SanDisk closed up 11.83% on the Nasdaq, with the index inclusion news acting as the main catalyst for that move.
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Filed under: News - @ April 14, 2026 9:26 am