Chip stocks slide as Broadcom boss warns of AI capex 'casino'

Samsung and SK Hynix shares fell sharply, dragging the Kospi lower, after Broadcom's CEO likened the scale of AI infrastructure investment to a 'casino' — a notable rhetorical escalation from a key industry insider that raises doubts about the sustainability of AI capex. The comment is unverified beyond the report and its market impact is the primary signal; the direct read is a de-rating of AI-exposed semiconductor names. This matters because it challenges the core growth narrative underpinning the 2025-2026 AI trade.