Anthropic achieves the highest first-day closing market capitalization among 2026 IPOs.
Amid speculation over major tech listings, traders are assessing potential IPO valuations. Resolves based on closing market cap on the first trading day in 2026.
Across 6 frontier models answering independently, the panel has all but ruled it out: the median is 12%.
They do not agree: Claude puts it at 35% and Gemini at 4%, 31 points apart. A spread that wide usually means the question turns on something none of them can see yet.
Money disagrees. The market sits at 51%, so the models are 39 points less confident than people with cash on the outcome — one of the wider gaps in the archive.
Nothing is settled until 2 Jan 2027, when the outcome is checked against sources and every number above gets a permanent score.
- AI edge
- -39 pts
- Moved this week
- +6 pts
- Volume
- $1.3M
The models are sharply less confident than traders risking real money: 12% against 51%.
What each one said
-
ClaudeAnthropic
Hinges on whether Anthropic actually IPOs in 2026 and at what valuation versus other mega-IPO contenders.
- Anthropic has no confirmed IPO date for 2026; private funding rounds have valued it near $170-200B, which would dwarf most IPOs if it lists.
- Competing mega-IPO candidates (SpaceX, Stripe, OpenAI-adjacent entities, Databricks) could also list in 2026 with comparable or higher valuations, and some may not IPO…
- Biggest swing factor: confirmation of Anthropic's actual IPO timing and pricing, which remains speculative as of October 2026.
35% -
QwenAlibaba
Anthropic's valuation trajectory vs. whether a larger company (e.g., Stripe, Databricks) also goes public in 2026.
- Anthropic is valued ~$61B (March 2025 round) and growing fast; a 2026 IPO could price at $100-150B+, making it a top candidate.
- The main risk is another mega-cap private company (Stripe at ~$91B, Databricks ~$62B, or a sovereign-backed entity) also listing in 2026.
- Historically, the largest IPO of a given year is often a surprise entrant announced late; base rate for any single company winning is low, but Anthropic is among the top…
22% -
GPTOpenAI
It turns chiefly on Anthropic filing and pricing an IPO in the final quarter, rather than remaining private into 2027.
- Anthropic must choose, file, clear SEC review, price, and begin trading by December 31; no public listing timetable is established.
- Companies of Anthropic’s scale rarely complete a first IPO within a few months absent an already-confidential filing and prepared disclosures.
- A confirmed late-2026 S-1 or public roadshow would sharply raise the odds; if it does list, its valuation could exceed most 2026 IPOs.
12% -
DeepSeekDeepSeek
Anthropic must actually file, price, and pop in 2026 — and out-cap every other 2026 listing on day one.
- Anthropic has no public S-1 as of October 2026, and a 2026 IPO would need filing months ahead; the window is nearly closed.
- Even a hot AI listing would likely price below SpaceX-scale peers, and 2026's biggest IPO could be a Gulf or Chinese mega-cap.
- Base rate for any single speculated company topping a year's IPO table is low; the one development that would change my mind is a confidential filing surfacing in the…
12% -
GrokxAI
Anthropic must still file, price and list by 31 Dec with a first-day close topping every other 2026 IPO.
- S-1-to-listing typically needs 8–12 weeks; with only 90 days left an unfiled issuer almost never makes it.
- 2026 already has several large listings; a late Anthropic deal would need ~$200 B+ close to beat them, far above recent AI private marks.
- A surprise confidential filing this week would be the only thing that could move the odds above single digits.
8% -
GeminiGoogle
Anthropic has not filed a public S-1 by Q4 2026, making a 2026 listing and top valuation crown highly improbable.
- A standard SEC registration timeline leaves under 90 days in 2026, making a debut before December 31 very unlikely.
- Even if it lists, rivals like OpenAI, SpaceX, or Stripe command larger private valuations and would easily surpass it.
- An unannounced confidential S-1 filing surfacing by mid-October would be the only catalyst to alter this trajectory.
4%
6 of 6 models answered · 31 points between the highest and lowest. None was shown the market price.
Resolution criteria
This market will resolve to the company that achieves the highest market capitalization in U.S. dollars based on the official closing price on its first trading day in 2026. This market will resolve to a company that completes an Initial Public Offering (IPO) between January 1 and December 31, 2026, 11:59 PM ET. Market capitalization is defined as the total number of outstanding shares multiplied by the closing share price on the first trading day. If two or more companies have exactly equal highest closing market capitalizations, this market will resolve to the company whose listed name comes first alphabetically. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In case the respective company's primary exchange’s official listing page does not report in U.S. dollars, it will be converted to U.S. dollars using the U.S. Federal Reserve Board’s H.10 foreign exchange reference rate for the relevant currency pair on the company’s first trading day (https://www.federalreserve.gov/releases/h10/). If no such rate is available for the relevant trading day, the most re
Question sourced from Polymarket on 2 Oct 2026. Forecast by google/gemini-3.8-flash, anthropic/claude-sonnet-5, openai/gpt-5.6-terra, x-ai/grok-4.6, deepseek/deepseek-v4.1-flash, qwen/qwen3.8-max-0902 via OpenRouter.