Will Anthropic have the highest IPO Market Cap 2026?
Yes at 46% on 29 Oct 2026, up 19 pts over the previous 7 days. 4 big jumps since 5 Oct 2026, listed below.
Data from Polymarket. Numbered dots are the jumps explained below.
Context
This prediction market asks whether Anthropic will achieve the highest market capitalization among all initial public offerings (IPOs) in 2026. The market resolves based on the official closing share price and total outstanding shares on the company's first trading day, with ties settled alphabetically by company name.
Anthropic has officially filed for a NASDAQ IPO, with initial valuations potentially surpassing $1.2 trillion and expectations to begin marketing the IPO as early as the week of November 9, 2026. The prospectus reveals unique governance structures, including a public benefit framework that could limit public shareholder influence and the trust's board control.
The filing has drawn widespread commentary from financial analysts like Aswath Damodaran and investor warnings from figures such as Michael Burry regarding AI industry vulnerabilities, alongside international skepticism from institutional investors.
Sources: Crypto Briefing: Anthropic IPO to limit public shareholder influence on board control, Crypto Briefing: Anthropic files for NASDAQ IPO, valuation could surpass $1.2T, Musings on Markets: The Anthropic Prospectus Arrives: My (but not the) IPO valuation!, Crypto Briefing: Anthropic IPO filing reveals potential to limit trust’s board control, CNBC: Anthropic filed to go public—what retail investors should weigh before its IPO, Reuters: Prediction market bets set the tone for Anthropic's much-awaited IPO, Crypto Briefing: Michael Burry warns Anthropic IPO filing reveals AI industry’s vulnerabilities, Built In: Anthropic IPO Filing: Valuation, Finances and Key Details, CNBC: Anthropic’s public benefit structure creates unusual risks for IPO investors, The Loadstar: Damodaran: The Prospectus Arrives: My (but not the) Anthropic IPO Valuation!, Bloomberg: Anthropic’s IPO Plans Draw Skepticism From Australian CIOs, NDTV Profit: What Is Anthropic Really Worth? Aswath Damodaran Puts A Number On It, The Motley Fool: Anthropic Could Begin Marketing Its IPO the Week of Nov. 9, Traders Magazine: Anthropic Pre-IPO Perpetuals Go Live
Written by AI from the linked news sources and checked automatically, not by a person.
What could move it next
No upcoming events listed for this market yet.
Price jumps explained
-
26 Oct 2026
Anthropic IPO Filing Sparks Market Interest
The likelihood of Anthropic having the highest IPO market cap in 2026 increased following news of its IPO filing. Articles detailed the company's financial figures, soaring sales, and upcoming stock market debut.
Sources: Business Insider: Anthropic's 7 cofounders are about to make generational fortunes. One owns more shares than the CEO., ABC7 Bay Area: IPO: Anthropic set to make stock market debut as questions swirl about safety of AI, Quartz: Anthropic's IPO filing shows each of its 7 cofounders is worth $13B+, The Defiant: OKX Offers 10x Anthropic Valuation Bets After IPO Filing, Yahoo Finance UK: Anthropic IPO filing lays bare explosive growth, Business Insider: Anthropic's S-1 paperwork reveals the stunning finances behind its meteoric rise ahead of its IPO, TKer by Sam Ro: Some quick thoughts on Anthropic, mega IPOs, and ‘existential risks to humanity’ 🤖, Mother Jones: Anthropic’s Founders Pledged to Donate Most of Their Stock. Their IPO Tells Another Story., Crypto Briefing: MetaMask offers Anthropic pre-IPO perpetual contracts via Hyperliquid, Reuters: Anthropic's soaring sales, steep losses put AI frenzy to IPO test, CNET: Threat of AI Bubble Looms Over Anthropic’s Big IPO Moment, Crypto Briefing: Anthropic files for US IPO amid rapid growth and rising costs, Bloomberg: Anthropic’s Massive Revenue Surge Comes With Ballooning Computing Bill, Business Insider: Anthropic's IPO sparks fear of market instability amid glut of AI stock, Invezz: Anthropic IPO prospectus released: 7 numbers investors need to know
After 24 h: held. After 7 days: too early.
-
16 Oct 2026
Anthropic IPO Valuation Expectations Cool
The chance of Anthropic having the highest IPO market cap decreased as investors began considering a lower valuation. Reports indicated that Anthropic's expected IPO valuation was reduced by $500 billion to $1.5 trillion due to slowing revenue growth.
Sources: Barron's: Anthropic Might Only Be Worth $1.5 Trillion. What That Means for AI Stocks., Yahoo Finance UK: Anthropic IPO valuation expectations cool as revenue growth slows, Yahoo Finance: Anthropic Investors Consider Lower $1.5 Trillion IPO Valuation as Revenue Growth Slows, Yahoo Finance: Is Anthropic worth $2 trillion? How about $1.5 trillion?, Firstpost: Anthropic’s $2 trillion IPO price too high? Investors weigh lower valuation: Report, The Telegraph: Anthropic’s valuation slashed by $500bn, Arise News: Anthropic Faces Lower IPO Valuation Expectations As Investors Question Growth Momentum
After 24 h: held. After 7 days: held.
-
14 Oct 2026
Anthropic IPO Valuation Concerns Weigh on Market
The probability of Anthropic achieving the highest IPO market cap dropped as reports questioned whether its targeted two trillion dollar valuation is sustainable. Articles highlighted concerns about the extreme valuation and uncertainties regarding employee share values ahead of the public offering.
Sources: Arabian Gulf Business Insight | AGBI: Anthropic’s $2 trillion IPO is too extreme to be sustainable, TOKENPOST: Anthropic's IPO Filing Leaves Employee Share Values Uncertain
After 24 h: partly reverted. After 7 days: held.
-
5 Oct 2026
Anthropic IPO Valuation and Commitments Report
Recent reports indicate that Anthropic is targeting a two trillion dollar IPO valuation before Thanksgiving. However, the company is also facing scrutiny over its large AI commitments as it prepares for the public offering.
Sources: Yellow.com: Anthropic Targets $2 Trillion IPO Before Thanksgiving, TipRanks: Anthropic’s $518B AI Commitments Loom Over $2T IPO Valuation
After 24 h: partly reverted. After 7 days: reverted.
Written by AI from the linked news sources and checked automatically, not by a person.
Other markets in “Largest IPO by market cap in 2026?”
Questions about this market
What are the odds for “Will Anthropic have the highest IPO Market Cap 2026”?
On 29 Oct 2026, Polymarket traders priced Yes at 46%, which means they saw about a 46 in 100 chance. That was up 19 points over the previous 7 days. The live price is shown in the chart at the top of this page.
Why did the odds move recently?
The latest explained move was on 26 Oct 2026, from 28% to 42%: Anthropic IPO Filing Sparks Market Interest. The likelihood of Anthropic having the highest IPO market cap in 2026 increased following news of its IPO filing. Articles detailed the company's financial figures, soaring sales, and upcoming stock market debut. Every big move is listed under “Price jumps explained” (this one is number 4).
Do big jumps in this market usually hold?
Of the 4 big jumps old enough to check, 2 held after 24 hours (kept at least 70% of the move). The rest partly or fully reverted.
How does this market resolve?
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. The full Polymarket rules are at the bottom of this page.
When does this market end?
Polymarket lists 2 Jan 2027 as the end date. It can settle earlier or later if the rules say so, for example when an official result comes in.
Can I bet on this market on predictionwave?
No. predictionwave only explains the odds. The market itself runs on Polymarket, and trading there is not allowed in every country.
How this market resolves (Polymarket rules)
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 recent previously published rate will be used. If the relevant currency is not listed, another credible exchange rate source will be used. A listed company may resolve to "No" as soon as it becomes unable to complete an IPO, including due to acquisition, merger, or absorption by an entity that is already publicly traded. In the event of an interruption in the course of the normal trading session on the respective companies’ first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.