Key Highlights

  • SK hynix shares fell about 9.68% in Monday trading to $139.72, down from a prior close of $154.57.
  • The decline came despite Nvidia and SK Group unveiling a more than $500 billion AI infrastructure initiative including a long-term next-generation memory supply agreement.
  • Investors are selling the stock amid growing worries about circular AI investment structures following the broader sector's historic 2026 run-up.
  • The stock carries a market capitalization of approximately $991.81 billion, with a 52-week range of $139.09 to $194.80.

Shares Decline Despite Deepened Nvidia Partnership

SK hynix Inc. (NASDAQ:SKHY) shares slid sharply Monday despite the announcement of a major deepened partnership with Nvidia, as investors instead focused on broader memory-sector valuation concerns and fresh competitive threats from Chinese memory manufacturers.

SK hynix is a South Korean semiconductor company headquartered in Icheon-si, South Korea, and one of the world's largest memory chip manufacturers, alongside Samsung Electronics and Micron, forming the global 'Big Three' in memory. The company designs, manufactures and sells a broad portfolio of memory semiconductors including DRAM, NAND flash, solid-state drives and multi-chip packages, serving customers across data centers, cloud computing, smartphones, PCs and automotive applications. SK hynix has emerged as a dominant force in the AI memory space, commanding approximately 62% of the high-bandwidth memory market as of mid-2025.

Nvidia and SK Group unveiled a more than $500 billion AI infrastructure initiative that includes a long-term supply agreement for next-generation AI memory and joint development of future high-bandwidth memory chips. Rather than rallying on the news, investors sold the stock amid growing worries about circular AI investment structures following the sector's historic 2026 run-up in valuations.

Chinese Competition and Supply Constraints

The pullback also comes as fresh competitive threats emerge from China's ChangXin Memory Technologies, which surged past a $500 billion valuation on its Shanghai debut, with Apple reportedly testing CXMT's DRAM chips. The selloff comes just ahead of SK hynix's July 29 earnings call, where investors will look for confirmation of whether the company's record HBM margins and a persistent memory shortage seen lasting through 2027 can justify the stock's massive run since its Nasdaq ADR debut.

SK hynix shares traded at $139.72, down from a previous close of $154.57, with an intraday range between $139.01 and $159.71. The company's market capitalization stood near $991.81 billion. The stock has traded between $139.09 and $194.80 over the past 52 weeks, with broader semiconductor peers and the VanEck Semiconductor ETF also under heavy pressure Monday.

Conclusion

SK hynix's decline despite a deepened Nvidia partnership underscores heightened investor sensitivity to both circular AI financing concerns and Chinese memory competition following CXMT's blockbuster debut. Investors are likely to focus on the company's July 29 earnings call for clarity on high-bandwidth memory margins and supply commitments.

This article is for informational purposes only and does not constitute investment advice. Readers should conduct their own research before making financial decisions.