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Finance·Sam Altman

How much will OpenAI raise in its IPO?

icon for How much will OpenAI raise in its IPO?
Finance·Sam Altman

How much will OpenAI raise in its IPO?

$80B–$90B 31.3%

<$30B 28.9%

$40B–$50B 20.6%

$100B+ 14%

Polymarket
NEW

$80B–$90B 31.3%

<$30B 28.9%

$40B–$50B 20.6%

$100B+ 14%

Polymarket
NEW

<$30B

$603 Vol.

29%

$30B–$40B

$463 Vol.

4%

$40B–$50B

$1,621 Vol.

24%

$50B–$60B

$1,151 Vol.

5%

$60B–$70B

$496 Vol.

8%

$70B–$80B

$489 Vol.

10%

$80B–$90B

$448 Vol.

31%

$90B–$100B

$306 Vol.

3%

$100B+

$637 Vol.

14%

This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing. The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission. Shares sold pursuant to any overallotment option (greenshoe) will not be considered. Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered. If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range. If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket. The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.OpenAI's confidential S-1 filing in June 2026 and CEO Sam Altman's insistence on a $1 trillion valuation have created uncertainty around IPO timing and scale, with advisers weighing a 2027 debut over a lower-priced 2026 listing after SpaceX's post-IPO volatility. The company's March 2026 private round closed at an $852 billion post-money valuation following a $122 billion raise, while Forge Global marks imply roughly $894 billion as of late August 2026. Trader sentiment on raise size remains closely divided because IPO proceeds hinge on share issuance volume, pricing relative to benchmarks like Treasury yields and tech multiples, and market appetite for AI floats amid regulatory review and competitive pressure from Anthropic. Key upcoming catalysts include any public S-1 release and FOMC-driven shifts in risk assets.

This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing.

The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission.

Shares sold pursuant to any overallotment option (greenshoe) will not be considered.

Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered.

If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range.

If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket.

The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing. The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission. Shares sold pursuant to any overallotment option (greenshoe) will not be considered. Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered. If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range. If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket. The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.
Volume
$6,214
End Date
Dec 31, 2027
Market Opened
May 21, 2026, 1:14 PM ET

Resolver

0x69c47De9D...
This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing. The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission. Shares sold pursuant to any overallotment option (greenshoe) will not be considered. Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered. If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range. If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket. The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.OpenAI's confidential S-1 filing in June 2026 and CEO Sam Altman's insistence on a $1 trillion valuation have created uncertainty around IPO timing and scale, with advisers weighing a 2027 debut over a lower-priced 2026 listing after SpaceX's post-IPO volatility. The company's March 2026 private round closed at an $852 billion post-money valuation following a $122 billion raise, while Forge Global marks imply roughly $894 billion as of late August 2026. Trader sentiment on raise size remains closely divided because IPO proceeds hinge on share issuance volume, pricing relative to benchmarks like Treasury yields and tech multiples, and market appetite for AI floats amid regulatory review and competitive pressure from Anthropic. Key upcoming catalysts include any public S-1 release and FOMC-driven shifts in risk assets.

This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing.

The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission.

Shares sold pursuant to any overallotment option (greenshoe) will not be considered.

Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered.

If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range.

If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket.

The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing. The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission. Shares sold pursuant to any overallotment option (greenshoe) will not be considered. Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered. If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range. If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket. The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.
Volume
$6,214
End Date
Dec 31, 2027
Market Opened
May 21, 2026, 1:14 PM ET

Resolver

0x69c47De9D...

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Frequently Asked Questions

"How much will OpenAI raise in its IPO?" is a prediction market on Polymarket with 9 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "$80B–$90B" at 31%, followed by "<$30B" at 29%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 31¢ implies that the market collectively assigns a 31% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"How much will OpenAI raise in its IPO?" is a newly created market on Polymarket, launched on May 21, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "How much will OpenAI raise in its IPO?," browse the 9 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "How much will OpenAI raise in its IPO?" is "$80B–$90B" at 31%, meaning the market assigns a 31% chance to that outcome. The next closest outcome is "<$30B" at 29%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "How much will OpenAI raise in its IPO?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.