Samsung’s shares are heading toward their largest single-session increase ever recorded, propelled by exceptional first-quarter financial results and surging AI-related semiconductor demand that has captivated investors.
The stock rocketed more than 15% higher during Wednesday’s domestic trading session, propelling the company past the prestigious $1 trillion market capitalization threshold. This achievement places Samsung as only the second East Asian technology company to reach this valuation level, following Taiwan Semiconductor Manufacturing Company.
Samsung Electronics Co., Ltd., SMSD.L
This dramatic market reaction follows Samsung’s announcement last week of first-quarter operating profit totaling ₩57.2 trillion — representing an extraordinary eight-fold increase compared to the same period last year. The company posted record quarterly revenue of ₩133.9 trillion. Remarkably, Samsung’s profit from just this three-month period exceeded its entire 2025 annual profit of ₩43.6 trillion.
Additional momentum came from a Bloomberg report indicating Apple has entered preliminary discussions with both Samsung and Intel regarding potential chip production arrangements within United States borders. Such a development would mark a significant departure from Apple’s traditional dependence on TSMC for semiconductor manufacturing.
SK Hynix, Samsung’s primary competitor in memory chip production, also experienced gains exceeding 10% during Wednesday’s session. The combined rally across these semiconductor leaders propelled South Korea’s primary Kospi index above 7,000 for the first time in the index’s history — an unprecedented achievement.
Morningstar analyst Yu Jing Jie characterized the situation clearly: the industry faces an acute shortage of DRAM and NAND chips driven by the voracious memory requirements of artificial intelligence systems. Since new semiconductor manufacturing capacity typically requires two to three years to establish, supply constraints are expected to persist for an extended period.
This supply-demand imbalance bodes well for Samsung’s profit margins. Rolf Bulk from The Futurum Group indicated that elevated memory pricing and robust earnings performance should continue even as additional manufacturing facilities across the industry begin production over the coming years.
Market reception of Samsung’s newest HBM4 chip technology has been encouraging, according to Bulk’s analysis. HBM4 represents the sixth and most advanced generation of high-bandwidth memory technology and is anticipated to serve as a critical component in Nvidia’s forthcoming Vera Rubin AI architecture.
Samsung announced in February that it had become the industry’s first manufacturer to initiate mass production of HBM4 chips, with shipments already underway to customers whose identities remain confidential.
SK Hynix currently maintains leadership in the HBM market with approximately 55% market share. Samsung controls roughly 25% of this segment. However, Bulk noted that investors have become less concerned about this differential, as profitability from conventional DRAM products has recently surpassed margins generated by HBM products.
Broader semiconductor sector momentum was evident elsewhere as Micron shares jumped 11%, AMD climbed more than 16% in after-hours trading following impressive Q1 results, and Intel advanced nearly 13%.
Chaiwon Lee, analyst at Life Asset Management, observed that Samsung currently trades at approximately six times forward 12-month earnings — a significant discount compared to TSMC’s valuation of roughly 25 times and Micron’s multiple of around 10 times. While acknowledging risks including intensifying competition from Chinese manufacturers and potential moderation in AI demand, Lee suggested the valuation disparity indicates potential for further appreciation.
According to FactSet data, Samsung’s stock was positioned to close Wednesday’s session at an all-time high.
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