ChatGPT Turns Three as Nvidia’s Value Soars and Bubble Warnings Intensify

Here’s today’s top stories in AI news. Three years after ChatGPT’s debut, its influence is transforming tech and markets: Nvidia shares are up 979% since launch, and Big Tech now makes up 35% of the S&P 500 by weight. Even bullish leaders increasingly concede bubble risks while betting on long-term value. U.S. online Black Friday sales hit a record $11.8B; Cyber Monday is projected at $14.2B. Holiday spend could reach $253.4B, though growth may reflect higher prices (+7%) as order volumes slipped 1%. AI and agents influenced an estimated $22B in sales; in-store traffic signals were mixed. The AI-bubble debate centers on surging capex (~$106B last quarter, ~1.4% of GDP), frothy private valuations, mixed productivity data (a METR study found AI slowed coders 19% vs. a Cursor study showing 26–39% gains), circular financing concerns, SPVs, and rising leverage—Oracle’s margins look thin if demand cools. AI is supercharging cybercrime as U.S. data breaches trend toward a record, per NPR’s The Indicator. MyHair AI launched a scalp-image analyzer trained on 300k photos, reporting 200k accounts and 1k subscribers, with plans for clinic bookings and medical partnerships.