NVIDIA Market Cap Surges KRW 600 Trillion in One Day as AI Bull Case Defies Skeptics

The Quick Take

• NVIDIA's market capitalization surged by $440 billion in a single session—the second largest single-day gain in stock market history
• Strong earnings drove the surge, with next-year revenue growth forecast at 70%, disproving AI bubble fears
• Korean tech and semiconductor stocks rallied in sympathy as AI capex cycle optimism swept global markets

NVIDIA delivered an earnings result powerful enough to add approximately 600 trillion Korean won—roughly $440 billion—to its market capitalization in a single trading session, marking the second-largest single-day market cap gain ever recorded. The result directly challenged AI bubble narratives that had been gaining traction among skeptical investors, with management providing forward revenue guidance implying approximately 70% growth in the coming year.

The ripple effect across Korean tech and semiconductor names was immediate and significant: SK Hynix and Samsung Electronics, which supply the high-bandwidth memory that powers NVIDIA's AI accelerators, saw shares move higher as the market reassessed the scale of the AI infrastructure build cycle. Korean financial media characterized the event as vindication of AI hardware investment theses that domestic fund managers had been debating through much of 2026.

The macro variable to track is whether NVIDIA's forward guidance translates into actual revenue on delivery—specifically the Blackwell GPU shipment ramp in Q3-Q4 2026. Any production or yield issues with Blackwell chips could cause a sharp re-rating, while a clean execution would extend the AI capex super-cycle and sustain elevated valuations across the global semiconductor supply chain including Korean memory leaders.

Synthesized from 4 sources.