Wall Street’s biggest AI listing is hitting a reality check. After Anthropic told prospective IPO investors that third-quarter revenue jumped 45% to $16.8 billion, some of those same investors started talking about a valuation closer to $1.5 trillion—not the roughly $2 trillion many had expected.
That shift matters far beyond one company. Anthropic’s November share sale is widely seen as a bellwether for the broader AI trade, coming as markets already question how much debt-funded data-center buildout the system can absorb.
What Anthropic Told Investors
According to Reuters reporting based on people familiar with the company’s investor day in San Francisco, Anthropic disclosed that Q3 revenue rose 45% from the prior quarter to $16.8 billion and that the company was profitable on an adjusted basis.
Those figures eased some worries about the enormous cost of building frontier AI systems. But they also disappointed investors who had watched Anthropic’s revenue more than double from the first quarter to $11.6 billion in the second quarter. Sequential growth of 45% still looks strong by ordinary software standards—yet it is a clear slowdown from that earlier pace.
Four people familiar with the matter told Reuters that some current and prospective IPO investors are now weighing a lower valuation. Three of them said discussions centered on about $1.5 trillion, a significant step down from the roughly $2 trillion previously expected for the November offering.
Anthropic did not immediately respond to Reuters’ requests for comment.
Why a Cooler Reception Matters for the Whole AI Market
Investors see Anthropic’s IPO as a near-term test of appetite for generative AI equities, with OpenAI potentially following next year. A softer reception could reinforce doubts already visible in public markets.
Last week, AI infrastructure names and chipmakers came under heavy pressure. Nvidia-backed CoreWeave, a major supplier of AI compute, saw its shares fall nearly 25% over the week, according to CNBC Investing Club. CoreWeave carries about $50 billion of debt, per LSEG data cited by Reuters, and the cost of insuring that debt against default climbed above 1,000 basis points—signaling that credit markets are pricing in material default risk.
Five-year CoreWeave credit default swaps exceeded 1,000 basis points and were up nearly 19% in a week and 178% over 12 months, CNBC reported. Bloomberg calculations cited by CNBC put the implied five-year default odds around 60%. Yields on a CoreWeave 2031 bond briefly approached 16% after being issued in April at 9.75%.
That is the backdrop against which Anthropic is preparing to list: explosive growth, huge capital needs, and a market that is newly sensitive to how AI is financed.
The Bigger Picture Behind the Numbers
Anthropic, founded in 2021 by former OpenAI executives including CEO Dario Amodei and president Daniela Amodei, has become one of the leading makers of generative AI models through its Claude family. Its growth has been backed by Alphabet’s Google and Amazon, which act as investors, cloud suppliers, and distribution partners—even as they compete in AI.
Reuters previously reported that Anthropic’s revenue surged twelvefold last year to nearly $4.6 billion, while the company lost more than $8 billion on an operating basis (excluding certain liability writedowns). In a prospectus Reuters said it saw exclusively in September, Anthropic reported a $42 billion loss for 2025 and outlined plans for further spending on AI infrastructure. The company has committed to spending at least $518 billion over a decade on cloud services, computing, and infrastructure.
Those commitments help explain why investors cheer revenue growth and still debate valuation: the top line is rising fast, but the capital intensity of the race is staggering.
Market Timing Is Awkward
The IPO calendar has already shown strain. Reuters noted that data-center operator SB Energy delayed its listing last month, and nuclear technology firm Holtec Nuclear pulled its plans to go public.
Meanwhile, U.S. equities just endured a rough stretch for tech. On Friday, Oct. 16, the Nasdaq Composite closed at 26,140.03, down 2.15%, after a weekly loss of about 4.5%—its worst week since late June, according to WSJ and CNBC coverage. The S&P 500 finished at 7,659.44 (−1.09%) and the Dow at 52,002.41 (−0.34%).
In that environment, a high-profile AI IPO priced below earlier whispers would not be surprising. It would also send a clear message: growth alone may no longer justify the most aggressive valuations if sequential momentum is slowing and funding costs are rising.
What to Watch Next
Prospective IPO investors met with Amodei and finance chief Krishna Rao at Anthropic’s headquarters. The Information had earlier reported that investors were considering a lower valuation; Reuters’ sources put those conversations near $1.5 trillion.
For U.S. readers following the AI trade, the practical takeaway is simple. Watch whether Anthropic’s offering clears at a premium or a discount to recent private-market hopes—and whether credit stress at heavily leveraged AI infrastructure firms continues to spill into equity prices. Monetization, margins, and financing terms are now as important as capability headlines.
Key takeaways
- Anthropic told IPO investors Q3 revenue rose 45% to $16.8 billion and that it was profitable on an adjusted basis (Reuters).
- Some investors are discussing a ~$1.5 trillion IPO valuation, down from roughly $2 trillion previously expected.
- Sequential growth slowed from a more-than-doubling of revenue from Q1 to Q2’s $11.6 billion.
- CoreWeave’s ~$50 billion debt load and CDS above 1,000 basis points highlight market worry about debt-funded AI buildouts.
- Tech’s rough week (Nasdaq −4.5%) raises the stakes for Anthropic’s November listing as an AI sentiment test.
Sources
- Reuters via Investing.com: Investors temper Anthropic IPO valuation expectations
- Reuters via Investing.com: CoreWeave debt stress and private credit
- CNBC Investing Club: CoreWeave credit default swaps
- WSJ live coverage: Stock market Oct. 16, 2026
- CNBC: Nasdaq worst week since June
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