Defining the new AI IPO wave and its concentration risk
The new AI IPO wave refers to a cluster of massive listings from Anthropic, SpaceX and OpenAI that could concentrate investor exposure, index weights and market liquidity in a narrow slice of technology and artificial intelligence companies. Anthropic has submitted a confidential draft S-1 for an IPO after a USD 65 billion (approx. RM299.5 billion) Series H round that lifted its valuation to USD 965 billion (approx. RM4.45 trillion), edging past OpenAI’s last reported USD 840 billion (approx. RM3.87 trillion) to USD 852 billion (approx. RM3.93 trillion) range. SpaceX, meanwhile, is preparing a listing that Reuters reports could raise up to USD 75 billion (approx. RM345 billion) at a valuation around USD 1.75 trillion (approx. RM8.05 trillion). Bank of America warns that if all three list near these levels, tech sector concentration in the S&P 500 could exceed historic peaks from past bubbles.
Inside Anthropic’s confidential IPO filing and the AI race
Anthropic’s confidential IPO filing signals an escalation in the race among frontier AI companies to move from private funding to public markets. The company’s latest funding round valued it at USD 965 billion (approx. RM4.45 trillion), while Crunchbase data shows it has raised about USD 125 billion (approx. RM575 billion) so far. Anthropic’s Claude models, including Claude Code and enterprise tools, have built a reputation with developers and corporate users, and reports suggest the firm may be close to its first quarter of operating profit. However, as commentators note, private-company claims allow wide room in what counts as “profit” until the audited prospectus appears. The confidential S-1 means investors cannot yet see detailed revenue, capital expenditure or compute obligations, but once the public filing is released, it will give markets their first full view of the economics behind one of the most highly valued AI companies.
Tech sector concentration and what Bank of America fears
Bank of America’s chief investment strategist Michael Hartnett has warned that IPOs from SpaceX, OpenAI and Anthropic could push the technology sector’s weight in the S&P 500 above a 48% threshold, surpassing concentration peaks seen in historic market episodes. Such tech sector concentration means index-linked investors may find almost half of their equity exposure sitting in a single broad sector, with a large share tied to three AI-linked names. Citigroup has already described the current market as “highly frothy,” and secondary share sales highlight tension between private valuations and insider behaviour. More than 600 current and former OpenAI employees have reportedly sold USD 6.6 billion (approx. RM30.36 billion) in stock ahead of its IPO, a move some analysts see as a signal that valuations could be near a short-term ceiling. For diversified portfolios, this clustering raises questions about risk management and sector limits.
Market liquidity risks from simultaneous mega AI company IPOs
The near-simultaneous push by Anthropic, SpaceX and OpenAI to go public concentrates capital-raising in a narrow window and a narrow theme. TradingKey analysis cited in reports suggests combined fundraising for the three AI company IPOs could exceed USD 200 billion (approx. RM920 billion), raising questions about market liquidity risks and investor capacity. Davidson analyst Gil Luria argues that “the combined demand for capital from SpaceX, OpenAI and Anthropic will be so considerable that it is likely to create disruptions in the capital markets,” adding that going early might be an advantage for issuers. As private capital shifts into public shares, other companies could face a more crowded pipeline or higher funding costs. Index funds may need to sell existing holdings to make room for new mega-cap tech entrants, potentially causing short-term volatility across sectors not directly tied to AI.
Implications for diversification, indices and long‑term stability
For investors, the Anthropic IPO filing and broader AI IPO wave highlight a tension between growth opportunities and concentration risk. If these listings enter major benchmarks quickly at high valuations, passive investors will automatically gain large stakes in similar business models, similar compute-heavy cost structures and correlated regulatory risks. Electronics and infrastructure suppliers could benefit, as AI firms drive demand for GPUs, accelerators, memory, power and data centre capacity, but that exposure is still tied to the fortunes of a small group of customers. Portfolio managers may need to review sector caps, factor exposures and stress scenarios that assume a sharp reversal in AI valuations or a slowdown in capital spending. In the longer term, how public markets price these listings—and how quickly valuations normalise against disclosed cash flows—will shape whether this wave deepens systemic fragility or settles into a sustainable tech sector balance.