Will Anthropic IPO by December 31, 2026?

Yes at 95% on 29 Oct 2026, up 9 pts over the previous 7 days. 3 big jumps since 16 Oct 2026, listed below.

Data from Polymarket. Numbered dots are the jumps explained below.

Context

This prediction market asks whether AI company Anthropic will officially go public through an initial public offering (IPO) before the end of December 31, 2026. The market resolves to "Yes" if Anthropic shares are listed and open for trading on a public securities exchange by the deadline, and to "No" if it fails to do so or is acquired by an already public company.

Anthropic officially filed to go public in late October 2026, sparking widespread discussion about its valuation, financial details, and unique public benefit structure. Reports indicate that the company could begin marketing its IPO as early as the week of November 9, with potential share offerings planned through platforms like RetailBook.

Key figures and regulators, such as Senator Warren, have begun probing the AI safety and market risks associated with the offering, while analysts and international investors weigh governance details like trust board control. Pre-IPO products have also gone live as markets price in the anticipated debut.

Sources: The Courier Mail: The buried risk inside Anthropic’s $2 trillion IPO, 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, Bloomberg: Four Unanswered Questions From Anthropic’s IPO Filing, Business Insider: We're getting an idea of how much Anthropic stock will be available for retail investors, CFO Dive: Sen. Warren probes AI safety, market risks in Anthropic IPO, Built In: Anthropic IPO Filing: Valuation, Finances and Key Details, CNBC: Anthropic’s public benefit structure creates unusual risks for IPO investors, Bloomberg: Anthropic’s IPO Plans Draw Skepticism From Australian CIOs, Yahoo Finance: Anthropic Could Begin Marketing Its IPO the Week of Nov. 9, News Karnataka: Anthropic plans UK IPO share offer through RetailBook, Traders Magazine: Anthropic Pre-IPO Perpetuals Go Live, Seeking Alpha: Anthropic IPO On Tap, NVIDIA Updates And Other Investor Days Shaping Markets

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

  1. 26 Oct 2026

    Anthropic Files for IPO

    82% → 94%Likely cause

    The chance of Anthropic going public increased after reports that the company filed its IPO paperwork and stock market listing. News outlets noted that the filing revealed soaring sales and details about the upcoming public offering.

    Sources: The New York Times: Anthropic’s I.P.O. Prospectus Spells Out a Future of Promise and Peril, Le Monde.fr: Anthropic files for stock market listing, revealing soaring sales and a long list of risks, Business Insider: Anthropic's S-1 paperwork reveals the stunning finances behind its meteoric rise ahead of its IPO, DW.com: AI company Anthropic files its IPO in hopes of raising $100 billion

    After 24 h: held. After 7 days: too early.

  2. 26 Oct 2026

    Anthropic IPO Filing Boosts Market Odds

    72% → 84%Likely cause

    The likelihood of Anthropic holding an IPO increased following news regarding its filing for a blockbuster United States listing. Several articles from Reuters detailed the company's path to the public offering, highlighting key executives and board members.

    Sources: Reuters: Anthropic's path from AI startup to industry-defining IPO, Reuters: Anthropic's potential mega IPO joins ranks of world's biggest listings, Reuters: Anthropic's filing for blockbuster US IPO shows key executives and board

    After 24 h: held. After 7 days: too early.

  3. 16 Oct 2026

    Anthropic IPO Probability Drops Amid Valuation and Delay Concerns

    72% → 62%Likely cause

    The chance of Anthropic holding an IPO dropped as reports emerged regarding investor hesitation and valuation expectations. Additionally, news indicated that Anthropic was in talks with the NYC Comptroller following demands for an IPO delay.

    Sources: Euronext Markets: Real-time Stock Market Data | live: Investors temper Anthropic IPO valuation expectations over revenue growth slowdown, sources say, Benzinga: Anthropic In Talks with NYC Comptroller After He Demands an IPO Delay, Bloomberg: Anthropic Opens Talks With NYC Comptroller After IPO Letter

    After 24 h: reverted. After 7 days: reverted.

Written by AI from the linked news sources and checked automatically, not by a person.

Other markets in “Anthropic IPO by __?”

Questions about this market

What are the odds for “Will Anthropic IPO by December 31, 2026”?

On 29 Oct 2026, Polymarket traders priced Yes at 95%, which means they saw about a 95 in 100 chance. That was up 9 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 82% to 94%: Anthropic Files for IPO. The chance of Anthropic going public increased after reports that the company filed its IPO paperwork and stock market listing. News outlets noted that the filing revealed soaring sales and details about the upcoming public offering. Every big move is listed under “Price jumps explained” (this one is number 3).

Do big jumps in this market usually hold?

Of the 3 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 "Yes" if Anthropic shares are listed on a public securities exchange and open for trading by 11:59 PM ET on the listed date. Otherwise, this market will resolve to "No." If Anthropic is acquired by another company that is already public, this market will immediately resolve to "No." The full Polymarket rules are at the bottom of this page.

When does this market end?

Polymarket lists 1 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 "Yes" if Anthropic shares are listed on a public securities exchange and open for trading by 11:59 PM ET on the listed date. Otherwise, this market will resolve to "No." If Anthropic is acquired by another company that is already public, this market will immediately resolve to "No." The primary resolution source for this market is official filings and announcements from Anthropic and the relevant securities exchange on which the shares are listed, including SEC filings (e.g., Form S-1, Form 8-A), exchange listing confirmations, and official press releases from Anthropic; however a consensus of credible reporting may also be used.