The debate in every serious portfolio manager’s inbox this weekend is not whether Anthropic will go public. It is what the second consecutive delay tells you about the price at which sophisticated money is actually willing to own the AI complex.
The Wall Street Journal reported on September 18, 2026 that Anthropic is moving ahead with a November IPO, targeting a valuation of roughly $2 trillion and a raise of up to $100 billion. That follows a slip from early September to late September, and then again to now. Each move is small in calendar terms. Together, they bracket something more significant: the timing of Nvidia’s reported involvement.
Nvidia is exploring a substantial role in Anthropic’s planned public debut, considering a commitment of as much as $10 billion as an early cornerstone buyer in what would rank among the biggest initial public offerings ever attempted. The talks were first reported roughly a week before the November slip landed. The talks remain fluid and could still shift or fall apart, with sources emphasizing that nothing has been finalized. That qualifier matters more now than it did before the delay.
The Bull Case
Anthropic’s operating numbers are genuinely extraordinary. In Q2 2026, revenues reached $11.5 billion, a year-on-year increase of roughly 14 times, with the annualized run rate climbing from about $9 billion at end-2025 to more than $65 billion by late July. Early backers project the Claude developer to clear $110 billion in annualized revenue by year-end, bolstered by expanding enterprise integrations. At those numbers, the $2 trillion implied price represents a revenue multiple of roughly eighteen times, and one investor told the Financial Times that figure is “the incredibly low end” of a reasonable valuation.
Company advisers and existing shareholders contend that a temporary pause on new model releases will not materially impair revenue momentum, citing substantial monetization opportunities across Anthropic’s current product suite. The November date also gives Anthropic time to present a full quarter of results, including any Q3 operating profit. Anthropic has told investors it expects to again generate adjusted operating profit in Q3 2026, excluding share-based compensation.
The Bear Case
The delay arrived packaged with the most damaging two words an IPO company can volunteer: price war. OpenAI’s GPT-6 Astra has regained enterprise traction, open-weight models from Chinese developers and Meta are compressing prices, and infrastructure costs are soaring. Anthropic’s costliest model, Fable 5, has stalled at around 11% of total sales, overtaken by the cheaper Opus line, which is exactly the migration pattern that compresses margins at scale.
Some Anthropic investors worry that OpenAI’s private fundraising could drain market appetite before Anthropic lists. OpenAI raised $122 billion on March 31, 2026 at an $852 billion post-money valuation and has signaled it remains open to additional capital. Every dollar absorbed privately is a dollar not available to public roadshow demand.
What Investors Are Missing
The Nvidia anchor stake is being read as a confidence signal. It should be read as something more conditional. Securing Nvidia as an anchor investor would give the offering an early vote of confidence from one of the most important suppliers in the AI supply chain, which is precisely why the reported $10 billion figure was so effective as a pre-IPO headline. But anchor commitments in mega-listings are rarely price-agnostic. If the November roadshow produces a book that clears at $2 trillion, that anchor holds. If funds push for a lower entry point in response to the price-war disclosure, the anchor arithmetic shifts.
The deeper question for funds marking private AI positions is structural. Investors have become increasingly focused on whether fast-growing AI companies can convert rapid revenue expansion into durable profits rather than leaning indefinitely on outside capital. Some discussions center on how to balance investment in new models against the need to strengthen profitability, particularly as rising interest rates make investors more focused on the timing of expected cash flows. Anthropic’s IPO is not just its own liquidity event. It is the largest public mark the sector has ever attempted, and every fund sitting on private AI exposure is watching the price it clears.
Stocks to Watch
- Nvidia (NVDA): Its reported anchor role is a strategic hedge as much as a financial one. Nvidia’s chip dominance depends on frontier AI labs staying well-capitalized and capacity-hungry. A successful Anthropic listing at or near $2 trillion validates that thesis. A downwardly revised valuation would signal that AI capex could plateau sooner than Jensen Huang’s guidance implies.
- Amazon (AMZN): Anthropic committed more than $100 billion in April 2026 to Amazon Web Services over the next decade, anchored by its use of more than one million Amazon Trainium2 chips. A stumbling IPO complicates that spend trajectory.
- Alphabet (GOOGL): Alphabet’s Anthropic ownership has been widely reported as being in the mid-teens and capped at 15%, but the exact percentage is not publicly confirmed in a way that cleanly maps to a single post-round figure. Its mark-to-market on that stake moves with every revision to the IPO range.
- Microsoft (MSFT): With OpenAI deferring its own listing to 2027, Microsoft’s AI investment story now depends on how the market prices Anthropic. A strong debut lifts the implied value of every frontier model relationship on Wall Street’s books.