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SK Hynix Sets Profit Records on AI Memory Boom as HBM4 Production Ramps

The company says large-scale HBM4 manufacturing is underway to meet surging data‑center demand.

Overview

  • SK Hynix reported 2025 operating profit of 47.2 trillion won and revenue of 97.1 trillion won, with Q4 operating profit rising 137% to about 19.2 trillion won.
  • HBM sales more than doubled year over year, and external estimates place the firm’s HBM market share around the high‑50s to low‑60s percent range.
  • Executives said HBM4 has moved into large‑scale production after completing preparation stages in September, positioning SK Hynix to stably supply both HBM3E and HBM4.
  • The company announced a $10 billion US AI solutions firm built around a restructured Solidigm, a cancellation of roughly 12.2 trillion won in treasury shares, and additional dividends.
  • Local reports link SK Hynix to Microsoft’s Maia 200 and suggest a major share of Nvidia’s 2026 HBM4 demand, which the company has not confirmed, as Samsung posted record quarterly profit and prepares HBM4 supply.