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Has the AI boom entered a manic new phase? | The Economist
- IPO Market Surge: US equity markets have raised $110–120 billion from IPOs so far this year, a figure comparable only to the 2021 boom but driven by extreme concentration.
- SpaceX raised $86 billion in a single offering, accounting for the vast majority of current capital raises.
- Unlike 2021, where hundreds of firms raised capital, current volume relies on a handful of "giga IPOs."
- Major upcoming issuers include Anthropic and OpenAI, with projected valuations similar to SpaceX.
- OpenAI has signaled a potential delay in its IPO until next year.
- Any single upcoming AI IPO would likely rank as the largest in history, though SpaceX's recent raise holds the current record.
- Retail Investor Participation: The SpaceX IPO featured a 20% allocation to retail investors, exceeding the 30% target set by founders but significantly higher than typical institutional-dominated offerings.
- Such high retail participation is cited as a classic indicator of a market shifting from optimism to a "manic" phase.
- Market Concentration and Valuation: AI-related companies now comprise nearly 40% of the S&P 500's total market capitalization, marking a significant increase since the launch of ChatGPT.
- Market dominance has expanded from the "Magnificent Seven" to include three additional firms: SpaceX, Micron, and Broadcom.
- Micron surged 286% this year, reaching a trillion-dollar valuation despite not previously being priced as a core AI component.
- The current market concentration levels for AI stocks are approaching those seen immediately prior to the 2001 dot-com bust.
- Options Market Anomalies: Institutional behavior in the options market has flipped to "bullish mania," with call options (bets on rising prices) becoming significantly more expensive than put options (hedging against declines).
- Historically, put options are more expensive as institutions use them for insurance; the current inversion suggests heavy speculative betting on further market gains.
- This shift in the "whale" trading profile is described as extremely unusual and indicative of the prevailing investor mood.
- Corporate Investment and Debt Shift: US tech companies have shifted from generating massive free cash flow to deploying it heavily into AI infrastructure, causing a collapse in free cash flow after a decade of growth.
- Capital expenditure is now focused on data centers, power supply, and AI hardware rather than share buybacks.
- Reluctant borrowers like Apple have entered the corporate bond markets as major issuers.
- Tech companies are increasingly becoming a dominant share of investment-grade debt across multiple global markets.