Anthropic IPO filing flags up to $750B in future compute spending as Ken Griffin warns of an AI bubble

Markets are digesting a clear Artificial Intelligence, Semiconductors, Technology catalyst titled "Anthropic IPO filing flags up to $750B in future compute spending as Ken Griffin warns of an AI bubble". Anthropic's draft IPO prospectus cites up to $750 billion of additional compute spending in coming years, according to the Wall Street Journal, landing the same morning Citadel's Ken Griffin said investors are almost certainly in an artificial-intelligence bubble.

Questions about AI ROI and overbuild can de-rate crowded semiconductor and megacap multiples even if demand is still growing. AI infrastructure suppliers (NVDA · MSFT · META) and software names priced for perfect utilization are the first places valuation doubts show up. This is a valuation/absorption story, not a model-capability story. The market implication is whether AI capex can keep converting into durable cash flows — crowded leaders usually take the first hit. Concrete utilization or pricing evidence can silence the waste narrative. The risk case is that if funding or ROI doubts spread, the same concentrated names unwind together. What happens next is whether markets validate next hyperscaler capex commentary and supplier order trends.