$SK hynix(SKHY)$ — Is This the Ultimate Answer to the AI Bubble Debate? Record earnings are strengthening the case for AI infrastructure spending. But for investors, the bigger question is whether today's extraordinary profitability can last. SK hynix has delivered a quarterly earnings report that is difficult to ignore. On October 28, the South Korean memory chipmaker reported third-quarter 2026 revenue of ₩104.62 trillion, up 328% year over year, while operating profit surged 632% to ₩83.33 trillion. Both figures set new quarterly records, and revenue crossed the ₩100 trillion threshold for the first time in the company's history. Behind these numbers lies a fundamental shift in the semiconductor industry: memory is becoming an increasingly crit