On June 9, SK Telecom rose 8.5% in after-hours trading, trading at $44.39 per share, with trading volume of $17.475 million.

On the news front, NVIDIA and SK Hynix formally announced a multi-year technology cooperation agreement focused on joint development of next-generation memory for global AI factory construction, covering Vera Rubin AI supercomputers, Vera CPU, and Jetson Thor robotics computing platforms. As a sister company within SK Group, SK Telecom announced it will build a gigawatt-class AI cloud data center based on NVIDIA's DSX platform, with the first AI center planned to commence operations in Korea in 2027, providing training, inference, and agent workloads for enterprises. SK Telecom later clarified that the initial 2027 facility will not be gigawatt-scale, and the expansion to gigawatt-level capacity will proceed in phases.

The stock had previously dropped sharply from its June 2 highs driven by Anthropic IPO speculation, falling approximately 15% over June 4-5. The NVIDIA partnership announcement appears to have reignited investor confidence in SK Telecom's AI infrastructure ambitions, driving the after-hours rebound.

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