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Griffin Warns of AI Bubble; Polymarket Prices the Odds

Ken Griffin warned AI is almost certainly a bubble, prompting Polymarket to launch a contract pricing a ~10% chance of the bubble bursting this year.

2026-10-21 ~ 2026-10-27 · 3 episodes · 9 posts

Episode 1 · Citadel's Ken Griffin Says AI Is Almost Certainly a Bubble (2026-10-21, 4 posts)

Citadel founder Ken Griffin warned that AI is "almost certainly" in a bubble, citing companies' struggle to turn massive AI spending into productivity gains and questioning the economics of the AI infrastructure buildout, while remaining long-term bullish on the technology.

Episode 2 · Polymarket Prices Chance of AI Bubble Bursting This Year at ~10% (2026-10-21, 2 posts)

Polymarket's contract on an AI bubble bursting before year-end is priced at roughly 9-11%, suggesting traders doubt a near-term collapse despite Ken Griffin's claim that AI is almost certainly in a bubble.

Episode 3 · Polymarket Prices Chance of AI Bubble Bursting This Year at ~10% (2026-10-26, 3 posts)

Polymarket has launched a contract on whether the AI bubble will burst, pricing the chance of a collapse by end of 2026 at only about 9-10% and 23% by mid-2027, suggesting traders see no imminent crash despite warnings from Elon Musk about AI cloud providers.