When will OpenAI IPO? — Before Jan 1, 2027
Open on Kalshi ↗Yes last at 3¢
The catch
IPO is confirmed when SEC declares S-1 effective, IPO is priced, or ticker assigned—not when trading begins.
“As long as any of those events occur, the market will immediately resolve to Yes, even if the company does not start trading until after Jan 1, 2027.” · market rules ↗
Pays out only if
OpenAI confirms an IPO before January 1, 2027.
“If OpenAI confirms an IPO before Jan 1, 2027, then the market resolves to Yes.” · market rules ↗Has to happen before December 31, 2026
“If OpenAI confirms an IPO before Jan 1, 2027, then the market resolves to Yes.” · market rules ↗Counts as done when: Date of confirmation (S-1 effective, IPO priced, or ticker assigned)
“This market will resolve on the basis of the date of the relevant confirmation, NOT the date of the IPO or document submission or processing” · contract terms ↗Decided by: U.S. Securities and Exchange Commission (SEC), OpenAI, the exchange on which OpenAI is planning to IPO (including but not limited to: the New York Stock Exchange (NYSE), the Nasdaq Stock Market (NASDAQ), the Shanghai Stock Exchange (SSE), the Hong Kong Stock Exchange, and the London Stock Exchange (LSE)), The New York Times, the Wall Street Journal, Bloomberg News, BBC, Australian Broadcasting Corporation (ABC), Reuters, CNBC, Financial Times
“The Source Agencies are, in hierarchical order, U.S. Securities and Exchange Commission (SEC), <company>, the exchange on which <company> is planning to IPO (including but not limited to: the New York Stock Exchange (NYSE), the Nasdaq Stock Market (NASDAQ), the Shanghai Stock Exchange (SSE), the Hong Kong Stock Exchange, and the London Stock Exchange (LSE)), The New York Times, the Wall Street Journal, Bloomberg News, BBC, Australian Broadcasting Corporation (ABC), Reuters, CNBC, and Financial Times.” · contract terms ↗
Does not count
Filing of an S-1 or equivalent without subsequent SEC effectiveness, pricing, or listing announcement
“Filing of an S-1 or equivalent without subsequent SEC effectiveness, pricing, or listing announcement;” · contract terms ↗Direct listings where no new shares are offered
“Direct listings where no new shares are offered;” · contract terms ↗Mergers with SPACs or reverse mergers
“Mergers with SPACs or reverse mergers;” · contract terms ↗Private placements or offerings limited to institutional or accredited investors
“Private placements or offerings limited to institutional or accredited investors;” · contract terms ↗
Watch out
- WATCHSome obvious wins don't count
WATCHThe venue keeps a right to review the outcome
“Before Settlement, Kalshi may, at its sole discretion, initiate the Market Outcome Review Process pursuant to Rule 6.3(d) of the Rulebook.” · contract terms ↗
Read on 2026-09-11. Click a line for the sentence it rests on. Facts and gaps only, not a prediction.
The rules, in plain English
If OpenAI confirms an IPO before January 1, 2027, the market resolves to Yes. An IPO is confirmed if any one of these happens: (1) the SEC declares OpenAI's Form S-1 effective, OR (2) the IPO is priced, OR (3) a securities exchange assigns a ticker to it. As long as any of those events occur, the market immediately resolves to Yes, even if OpenAI does not start trading until after January 1, 2027.
What the rules leave open
Whether a foreign exchange S-1 equivalent (e.g., prospectus approved by FCA, SEBI, MAS) counts if OpenAI IPOs outside the U.S.
closest the rules come: “The company's Form S-1 (or equivalent IPO registration statement) is declared effective by the U.S. Securities and Exchange Commission (SEC), or an equivalent regulatory filing is approved by a recognized national securities regulator (e.g., FCA, SEBI, MAS, etc.) and made public;” · contract terms ↗