Short Answer

An OpenAI IPO by December 31, 2026 is not expected by the market, which prices the event at 14.0%.

1. Market Behavior & Drivers

The implied probability of an OpenAI IPO by August 31, 2026, fell from 20% to 13.5% following reports of comments from CFO Sarah Friar. In August 2026, Friar reportedly told staff the company anticipates going public in 2027, or potentially sooner if business growth accelerates. This new timeline, while containing a qualifier, sets the baseline expectation for an IPO outside the contract's resolution window, directly lengthening the odds of a 2026 event.
The price decline occurred with zero traded volume. This indicates the market's downward repricing was a direct adjustment to the CFO's guidance by the market's creators or automated systems, rather than a reflection of capital-weighted sentiment from traders. The market is pricing a low-probability event based on public statements, without active participation to confirm or challenge the odds.
  • Since last update (~44h): For December 31, 2026, our model conviction increased by 2.4pp (model_led), compressing edge.
  • Overall edge compressed by 3.4pp as model probability rose 2.4pp in 43.5 hours.
  • Three prior outcomes (July 31, 2026; December 31, 2025; June 30, 2026) resolved to "no".
  • December 31, 2026 leads market probabilities, despite CFO targeting 2027.
  • OpenAI's CFO indicated a 2027 IPO, possibly sooner with continued growth.

Who Wins and Why

Outcome Market Model Why
June 30, 2026 0.0% 5.5% Determined: NO
December 31, 2026 14.0% 5.5% OpenAI's continued growth and market readiness may facilitate an IPO by December 31, 2026.
December 31, 2025 0.0% 5.5% Determined: NO
August 31, 2026 0.1% 0.1% A strong investor appetite for AI companies may accelerate OpenAI's IPO timeline by August 31, 2026.
July 31, 2026 0.0% 5.5% Determined: NO

Current Context

OpenAI anticipates becoming a public company by 2027, potentially sooner [1][2][3]. CFO Sarah Friar stated in August 2026 that accelerated business growth could expedite this timeline [1][2][3]. The company formally moved toward an IPO by confidentially filing an S-1 registration statement with the SEC in June 2026 [4][5][6][7]. Market reports have indicated a potential listing target of Q4 2026 [8]. OpenAI management, including Friar, views the IPO as a "milestone" and "another fundraise," emphasizing the company's independent trajectory despite competition [1][3][5].
OpenAI has demonstrated significant financial scale ahead of its IPO [4][9][10][11]. By August 2026, the company's annual revenue run rate (ARR) exceeded $40 billion [4][9][10][11]. CEO Sam Altman reportedly targets an IPO valuation of at least $1 trillion [4][12]. The firm's latest private valuation was $852 billion as of March 2026 [4][12][13]. A secondary share sale in August 2026 allowed employees to sell stock at this $852 billion valuation [14]. Despite robust revenue, OpenAI faces substantial operating losses driven by heavy infrastructure and cloud investment [4][9].
Sources (14)
  1. 1OpenAI 'will be a public company in 2027' or sooner, CFO...cnbc.com
  2. 2OpenAI’s CFO told staff it will go public in 2027, or soonerthenextweb.com
  3. 3OpenAI's CFO Just Told Employees the IPO Is Coming in 2027 or Sooner - 24/7 Wall St.247wallst.com
  4. 4OpenAI Is Reportedly Targeting an IPO Debut Above $1...finance.yahoo.com
  5. 5OpenAI confidentially files for IPO, prepping Wall Street for AI debutcnbc.com
  6. 6Press Release, dated June 11, 2026sec.gov
  7. 7Letter from the Investment Company Institutesec.gov
  8. 8Ex99 2.htmsec.gov
  9. 9OpenAI to delay IPO after Sam Altman spooked by SpaceX tumble | The Independentthe-independent.com
  10. 10OpenAI’s Revenue Run Rate Tops $40 Billion Ahead of IPO | Bloomberg Businessweekyoutube.com
  11. 11OpenAI’s Revenue Run Rate Tops $40 Billion Ahead of IPO | Bloomberg Intelligenceyoutube.com
  12. 12OpenAI Is Reportedly Targeting an IPO Debut Above $1 Trillion. Should Investors Watch Sam Altman's Path to Public Markets? | The Motley Foolfool.com
  13. 13OpenAI Leans Toward Holding Up I.P.O. Until Next Yearnytimes.com
  14. 14https://www.sec.gov/Archives/edgar/data/1892492/000149315226039380/ex99-1.htmsec.gov

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Market Data

Contract Snapshot

This market resolves to "Yes" if OpenAI completes an Initial Public Offering (IPO) by the specific listed date ET, confirmed by official company announcements and credible news sources. It resolves to "No" if the IPO does not occur by that date, or if OpenAI is acquired by another company that is already public. An IPO is defined as the first sale of stock to the public on any recognized stock exchange, with resolution based on a consensus of credible reporting.

Available Contracts

Market options and current pricing

Outcome bucket Yes (price) No (price) Last trade probability
December 31, 2025 $0.00 $1.00 100%
December 31, 2026 $0.14 $0.87 14%
September 30, 2026 $0.01 $0.99 1%
August 31, 2026 $0.00 $1.00 0%
July 31, 2026 $0.00 $1.00 0%
June 30, 2026 $0.00 $1.00 0%
March 31, 2027 $0.92 $0.81 —
June 30, 2027 $0.86 $0.85 —

Market Discussion

Traders largely anticipate that an OpenAI IPO is unlikely in 2026, with market probabilities for a listing by year-end standing at only 14%, and expectations strongly shifting towards 2027. Arguments for an eventual IPO include CEO Sam Altman's push for capital and strong revenue growth, while skepticism for a 2026 debut stems from the CFO's emphasis on internal readiness, significant losses, compliance demands, and advisor recommendations to delay due to market volatility. The highest probability (55%) is currently assigned to an IPO by March 31, 2027, reflecting this consensus.

4. Trust Index

Octagon Trust Index Polymarket 59 Caution

Corporate action: boards, bankers, and counsel hold the answer before the announcement

Integrity risk· Information exposure

How it adds up
Integrity80% of score58Caution
Trade quality20% of score61Caution
Trust score59Caution

Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index

Trust profile
Integrity5 screens run · 2 don't apply · 3 awaiting data
Market integrity
74Good

Outcome is hard to influence

Outcome controlStructural risk · high confidence

Settlement is decided by a token-holder vote.

Large tradesTrade signals · medium confidence

Largest single print on will-openai-ipo-by-june-30-2026 carried 73% of its 35,242-contract tape (print is 84d old)

Screened clean
Thin-volume movesNo significant move Clear
Size patternsTrade sizes look organic. Clear
1 screen not run
Thin-leg conviction · doesn't apply to this market type
Info fairness
40High Risk
Information exposureStructural risk · medium confidence

Corporate action: boards, bankers, and counsel hold the answer before the announcement

4 screens not run
Move vs. catalyst · data source not connected
Longshot repricing · data source not connected
Pre-broadcast certainty · doesn't apply to this market type
Cross-venue timing · data source not connected
Resolution quality
60Caution

Settlement depends on token voting

No suspicious activity on any screen

Resolution rules read: Check the rules

Settlement is decided by a token-holder vote.

Liquidity
61Tradeable

Fills fine at modest size

3 contracts · worst first · 4 settled or closed · 1 below the volume floor — not scored

September 30, 202627
Very thin · low confidence

Light recent trading — size may not fill near the screen price.

December 31, 202661
Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

March 31, 2027—
No recent trading to measure

No recent trading to measure

Move quality
80Confirmed

Moves came with real volume

3 contracts · worst first · 4 settled or closed · 1 below the volume floor — not scored

March 31, 202780
Confirmed · medium confidence

Volume confirms the move over 7d

December 31, 2026—
No significant move (24h)

Price was stable over the last 24 hours.

September 30, 2026—
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
80Check the rules

Counts toward Resolution quality, not here

3 contracts · worst first · 4 settled or closed · 1 below the volume floor — not scored

March 31, 202780
Check the rules · low confidence

Settles on a clear result. Verify the settlement source and resolution date.

objective outcome · Unclearofficial source · Cleartime boundary · Clear
December 31, 202680
Check the rules · low confidence

Settles on a clear result. Verify the settlement source and resolution date.

objective outcome · Unclearofficial source · Cleartime boundary · Clear
September 30, 202680
Check the rules · low confidence

Settles on a clear result. Verify the settlement source and resolution date.

objective outcome · Unclearofficial source · Cleartime boundary · Clear
Trade quality
61Caution

Tradable, but expect execution cost beyond small sizes.

Outcome quality 61 (notional-weighted across 2 scored legs)

4 settled or closed · 1 below the volume floor — not scored

March 31, 2027–Market scoreLiquidity–Move quality80Rule clarity80
Why this score
Liquidity
No recent trading to measure

No recent trading to measure

Move quality
80 · Confirmed · medium confidence

Volume confirms the move over 7d

Rule clarity
80 · Check the rules · low confidence

Settles on a clear result. Verify the settlement source and resolution date.

objective outcome · Unclearofficial source · Cleartime boundary · Clear
December 31, 202661Market scoreLiquidity61Move quality–Rule clarity80
Why 61
Liquidity
61 · Tradeable · low confidence

Light recent trading — size may not fill near the screen price.

Move quality
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
80 · Check the rules · low confidence

Settles on a clear result. Verify the settlement source and resolution date.

objective outcome · Unclearofficial source · Cleartime boundary · Clear
September 30, 202627Market scoreLiquidity27Move quality–Rule clarity80
Why 27
Liquidity
27 · Very thin · low confidence

Light recent trading — size may not fill near the screen price.

Move quality
No significant move (24h)

Price was stable over the last 24 hours.

Rule clarity
80 · Check the rules · low confidence

Settles on a clear result. Verify the settlement source and resolution date.

objective outcome · Unclearofficial source · Cleartime boundary · Clear

underwriting_v1.4 · computed Sep 21, 2026

5. What stock market conditions in late 2026 or early 2027 could accelerate or delay OpenAI's IPO?

IPO Target Year2027 (CFO Sarah Friar) [1][2][3]
CEO Valuation Target$1 trillion (Sam Altman) [4][5][6][7][8]
Prediction Market IPOMarch and June 2027 (most likely) [9][10]
OpenAI's IPO is likely delayed due to various market and internal factors. OpenAI's initial public offering (IPO) is widely anticipated to be delayed, with a potential timeline shifting to late 2026 or early 2027 [4][5][6][7][8]. This delay is attributed to prevailing market conditions, including volatility and limited retail investor enthusiasm [4][5][6][7][8]. Concerns from advisors, influenced by the recent underwhelming performance of the SpaceX IPO, also play a role [6]. Furthermore, CEO Sam Altman's steadfast pursuit of a $1 trillion valuation target and the company's objective to allow its financial metrics to mature are noted as significant contributing factors [4][5][6][7][8].
OpenAI's CFO officially targets a 2027 IPO, possibly sooner. OpenAI's CFO, Sarah Friar, has officially indicated that the company aims to go public in 2027, though an earlier debut remains possible if business growth continues to accelerate [1][2][3]. However, the specific stock market conditions that could expedite the IPO have not been explicitly detailed. Internal instability, marked by a recent departure of key executives, has also introduced additional investor concern ahead of a public listing [11]. Prediction markets generally align with a 2027 timeline, assigning substantial probability to March and June of that year for the IPO [9][10].
Sources (11)
  1. 1OpenAI 'will be a public company in 2027' or sooner, CFO...cnbc.com
  2. 2OpenAI’s CFO told staff it will go public in 2027, or soonerthenextweb.com
  3. 3OpenAI's CFO Just Told Employees the IPO Is Coming in 2027 or Sooner - 24/7 Wall St.247wallst.com
  4. 4OpenAI's IPO Won't Likely Happen Until 2027. Here's Why That's the Right Call. | The Motley Foolfool.com
  5. 5OpenAI Leans Toward Holding Up I.P.O. Until Next Yearnytimes.com
  6. 6OpenAI May Delay Its IPO To 2027, Report Saysforbes.com
  7. 7OpenAI may delay blockbuster IPO to 2027investing.com
  8. 8OpenAI may delay IPO to 2027 over valuation concerns - Quartzqz.com
  9. 9OpenAI IPO by...? Predictions & Odds 2026 | Polymarketpolymarket.com
  10. 10OpenAI IPO by...? | iMarkethkimarket.com
  11. 11OpenAI talent exodus raises 'huge red flag' ahead of IPOcnbc.com

6. What do OpenAI's financials and leadership statements signal about their IPO readiness before 2027?

IPO Target Timeline2027 or sooner [1][2][3]
Confidential IPO FilingJune 2026 [1][4][5]
Annualized Revenue Run Rate$40 billion (as of August 2026) [6][7][5]
OpenAI targets a 2027 IPO, potentially sooner, based on growth [1][2][3]. OpenAI's CFO, Sarah Friar, communicated this plan to employees in August 2026, indicating that the company's public debut is contingent on sustained business growth [1][2][3]. This announcement followed the confidential submission of initial public offering paperwork to the SEC in June 2026 [1][4][5].
Strong revenue and capital raise offer flexibility for IPO timing [6][7][5][1][3]. As of August 2026, OpenAI's annualized revenue run rate has surpassed $40 billion, with enterprise revenue now forming the majority of its total earnings and growing faster than expected [6][7][5]. Leadership frames the IPO as "another fundraise" or a milestone, rather than a final destination, supported by a significant $122 billion capital raise in March 2026 that provides substantial flexibility in timing the public debut [1][3][7]. The company's leadership also stated its focus is on "running our own race" rather than tracking rival companies' IPO timelines [1][3][5].
Sources (7)
  1. 1OpenAI 'will be a public company in 2027' or sooner, CFO...cnbc.com
  2. 2OpenAI’s CFO told staff it will go public in 2027, or soonerthenextweb.com
  3. 3OpenAI's CFO Just Told Employees the IPO Is Coming in 2027 or Sooner - 24/7 Wall St.247wallst.com
  4. 4OpenAI confidentially files for IPO, prepping Wall Street for AI debutcnbc.com
  5. 5OpenAI's Revenue Run Rate Tops $40 Billion Ahead of IPOfinance.yahoo.com
  6. 6OpenAI’s Revenue Run Rate Tops $40 Billion Ahead of IPO - Bloombergbloomberg.com
  7. 7OpenAI CFO Friar tells investors that enterprise bigger than consumercnbc.com

7. How do the IPO timelines and pre-IPO valuations of OpenAI and its rival Anthropic compare heading into 2027?

OpenAI Expected IPO2027 or sooner [1][2][3][4]
Anthropic Expected IPOlate 2026 [5][6][7]
Anthropic Private Valuation$965 billion [8][9][7]
Anthropic is expected to pursue an IPO sooner than OpenAI. While OpenAI's CFO indicated on August 31, 2026, that the company anticipates going public in 2027 or potentially earlier, pointing to an accelerated timeline from prior expectations [1][2][3][4], Anthropic is widely projected to launch its IPO as early as late 2026, with market consensus often suggesting an October listing [5][6][7]. Both companies have confidentially submitted draft S-1 registration statements to the SEC, with OpenAI having filed its S-1 in June 2026 [1][5][6].
Anthropic's valuation projections currently exceed OpenAI's. Anthropic's most recent reported private valuation was approximately $965 billion, surpassing OpenAI's approximate $852 billion [8][9][7]. Investors speculate that Anthropic could achieve a post-listing valuation near or even exceeding $2 trillion, with reports indicating the company aims for a $2 trillion IPO [10][6][11][12]. Such an outcome could potentially set new records for IPO fundraising [10][6][11][12].
Sources (12)
  1. 1OpenAI 'will be a public company in 2027' or sooner, CFO...cnbc.com
  2. 2OpenAI’s CFO told staff it will go public in 2027, or soonerthenextweb.com
  3. 3OpenAI's CFO Just Told Employees the IPO Is Coming in 2027 or Sooner - 24/7 Wall St.247wallst.com
  4. 4OpenAI's IPO Won't Likely Happen Until 2027. Here's Why That's the Right Call. | The Motley Foolfool.com
  5. 5On what date will Anthropic complete its… — FutureSearchfuturesearch.ai
  6. 6Anthropic IPO — aiming at SpaceX's $86.2bn record, with a public filing possible this monthtenbrief.com
  7. 7Anthropic vs OpenAI IPO Date: Who Will List First?indmoney.com
  8. 8Anthropic IPO: Valuation, Timeline and Investment Optionssmartasset.com
  9. 9Anthropic CFO leading early IPO meetings, has not...cnbc.com
  10. 10EXCLUSIVE Anthropic IPO valuation hinges on $190-200...reuters.com
  11. 11Anthropic investors bet on $2tn valuation in record IPOft.com
  12. 12Anthropic's $2T IPO, Zuck's AI Manifesto, Nvidia's $500B AI Bet, Grok's Comebackyoutube.com

8. Where can traders find reliable data on OpenAI's secondary market share price and volume ahead of its IPO?

Secondary Market Data PlatformsForge Global, Nasdaq Private Market, Caplight, Augment, Limen Markets, FNEX [1][2][3][4][5][6]
Data Available on Private PlatformsIndicative pricing and bid/ask activity [1][2][3][4][5][6]
OpenAI IPO Prediction (August 2026)Skepticism for 2026 IPO, favoring 2027 debut [7][8][9]
Private market platforms offer indicative pricing for OpenAI shares. Traders seeking reliable data on OpenAI's secondary market share price and volume can utilize various private market platforms, including Forge Global, Nasdaq Private Market, Caplight, Augment, Limen Markets, and FNEX [1][2][3][4][5][6]. These platforms provide accredited and institutional investors with essential information such as indicative pricing and bid/ask activity for OpenAI shares [1][2][3][4][5][6].
Prediction markets offer insights into OpenAI's IPO timeline. In addition to secondary market share data, prediction markets like Polymarket, Kalshi, and Coinbase provide probability-based insights concerning the timeline for an OpenAI IPO [7][8][9]. As recorded in August 2026, current market sentiment reflects considerable skepticism regarding a 2026 IPO, with a debut in 2027 being the favored outcome [7][8][9].
Sources (9)
  1. 1Sell or Invest in OpenAI Stock Pre-IPOnasdaqprivatemarket.com
  2. 2Buy And Sell OpenAI Stockforgeglobal.com
  3. 3OpenAI | Valuation, Funding Rounds & Stock Price | Caplightcaplight.com
  4. 4Buy OpenAI Stock | Early Share Accessaugment.market
  5. 5Limen Markets Private — The Pre-IPO Marketplacelimenmarkets.com
  6. 6Private Securities Secondary Market Platform - FNEXfnex.com
  7. 7OpenAI IPO by...? Predictions & Odds 2026 | Polymarketpolymarket.copilot.markets
  8. 8When will OpenAI officially announce an IPO?kalshi.com
  9. 9When will OpenAI officially announce an IPO? | Prediction Markets | Coinbasecoinbase.com

9. How might the SEC's review of OpenAI's S-1 filing impact a 2026 vs. 2027 IPO date?

S-1 Filing DateJune 2026 [1][2][3]
Stated IPO Target2027 (could be sooner) [1][4][5]
2026 IPO Probability~17% (as of late August 2026) [6]
OpenAI confidentially filed for IPO, but SEC impact is unclear. OpenAI submitted a confidential S-1 filing to the U.S. Securities and Exchange Commission (SEC) in June 2026, a standard procedural step for companies considering an initial public offering [1][2][3]. However, the research does not detail how the SEC's review of this S-1 filing specifically impacts the company's stated IPO timeline [1][2][3].
Leadership projects a 2027 IPO; market sentiment aligns. In an August 2026 all-hands meeting, OpenAI CFO Sarah Friar indicated that the company aims to go public in 2027, although she noted this could happen sooner if the business shows accelerated growth [1][4][5]. Current prediction markets reflect low confidence in a 2026 IPO, estimating the probability of a confirmed IPO before January 1, 2027, at approximately 17% as of late August 2026 [6].
Strong liquidity and internal transitions favor a later IPO. Factors supporting a 2027 timeline include OpenAI's robust liquidity position, bolstered by a $122 billion funding round in March 2026, and management's expressed preference to remain a private entity to finalize its structural transition [7].
Sources (7)
  1. 1OpenAI 'will be a public company in 2027' or sooner, CFO Friar tells employeescnbc.com
  2. 2OpenAI IPO S-1 Filing: What It Means for Youtechjournal.org
  3. 3OpenAI confidentially files for IPO, prepping Wall Street for AI debutcnbc.com
  4. 4OpenAI’s CFO told staff it will go public in 2027, or soonerthenextweb.com
  5. 5OpenAI's CFO Just Told Employees the IPO Is Coming in 2027 or Sooner - 24/7 Wall St.247wallst.com
  6. 6OpenAI IPO Odds: AI Panel Vs Kalshi Timeline | OddsShopperoddsshopper.com
  7. 7OpenAI's IPO Won't Likely Happen Until 2027. Here's Why That's the Right Call. | The Motley Foolfool.com

10. What Could Change the Odds

Key Catalysts

OpenAI's initial public offering timeline remains a key catalyst. OpenAI CFO Sarah Friar stated in an August 2026 all-hands meeting that the company will be public in 2027, or sooner with continued business growth [1][2][3]. The company has filed confidential IPO paperwork with the SEC, reported in June 2026, and reportedly submitted a confidential S-1 filing as of August 31, 2026 [1][4][3][5][6][7][8][9]. Prediction markets as of late August 2026 indicate an approximate 17% probability of a 2026 IPO announcement, with higher consensus at approximately 74% for before June 2027 [10]. Management views the IPO as a milestone for employee liquidity and acquisition currency, not operational funding, following a $122 billion capital raise in March 2026 [3][11][12]. OpenAI is on track to generate annualized revenue exceeding $40 billion [13][14] and completed a secondary share sale of approximately $7 billion at an $852 billion valuation [15].
Key market catalysts extend beyond OpenAI's internal timeline, encompassing the company's enterprise revenue growth, potential IPO activity from rival Anthropic, and general market reception to large-cap technology debuts [1][3][16]. If OpenAI or Anthropic fail, hyperscaler margins will compress, business growth will slow, and the entire AI chain could reverse [17]. Some market commentary projected a Q4 2026 IPO timeline for OpenAI with a target valuation between $852 billion and $1 trillion, though official details are subject to uncertainty [9].

Key Dates & Catalysts

  • Closes: June 30, 2027
Sources (17)
  1. 1OpenAI 'will be a public company in 2027' or sooner, CFO...cnbc.com
  2. 2OpenAI’s CFO told staff it will go public in 2027, or soonerthenextweb.com
  3. 3OpenAI's CFO Just Told Employees the IPO Is Coming in 2027 or Sooner - 24/7 Wall St.247wallst.com
  4. 4OpenAI Leans Toward Holding Up I.P.O. Until Next Yearnytimes.com
  5. 5Press Release, dated June 11, 2026sec.gov
  6. 6https://www.sec.gov/Archives/edgar/data/1892492/000149315226032609/ex99-1.htmsec.gov
  7. 7https://www.sec.gov/Archives/edgar/data/1892492/000149315226033459/ex99-1.htmsec.gov
  8. 8https://www.sec.gov/Archives/edgar/data/1892492/000149315226036277/ex99-1.htmsec.gov
  9. 9Ex99 2.htmsec.gov
  10. 10OpenAI IPO Odds: AI Panel Vs Kalshi Timeline | OddsShopperoddsshopper.com
  11. 11OpenAI's IPO Won't Likely Happen Until 2027. Here's Why That's the Right Call. | The Motley Foolfool.com
  12. 12OpenAI's CFO Just Told Employees the IPO Is Coming in...finance.yahoo.com
  13. 13OpenAI’s Revenue Run Rate Tops $40 Billion Ahead of IPO | Bloomberg Businessweekyoutube.com
  14. 14OpenAI’s Revenue Run Rate Tops $40 Billion Ahead of IPO | Bloomberg Intelligenceyoutube.com
  15. 15https://www.sec.gov/Archives/edgar/data/1892492/000149315226039380/ex99-1.htmsec.gov
  16. 16OpenAI IPO timeline delayed, Kalshi predictionscnbc.com
  17. 17AI’s Achilles’ Heel: Why Everything Hinges on Anthropic & OpenAI | The Weekly Wrapyoutube.com