Level 1 — Absolute Beginner

OpenAI is a big company. It makes ChatGPT. ChatGPT is a chatbot. Many people use it every day.

In early September 2026, OpenAI started to prepare special papers. The papers go to a US regulator called the SEC. This is the first step before a company can sell shares to the public.

Right now, OpenAI is a private company. It is worth about 852 billion dollars. Experts think it could become worth more than one trillion dollars if it sells shares on the stock market.

Two big banks, Goldman Sachs and Morgan Stanley, are helping OpenAI. The CEO of OpenAI is Sam Altman. Another company, Anthropic, may also sell shares soon, maybe in October 2026.

IPO

Short for Initial Public Offering. It is when a company sells shares to the public for the first time.

valuation

The total worth of a company, in money.

stock market

A place where people buy and sell small parts of companies, called shares.

chatbot

A computer program that can talk with people using text or voice.

private company

A company whose shares are not sold to the public.

public company

A company whose shares anyone can buy on the stock market.

regulator

A government group that watches over companies and makes rules for them.

confidential

Secret. Not shown to the public yet.

Level 2 — Elementary

OpenAI, the company that created the popular chatbot ChatGPT, has begun preparing confidential draft papers for the US Securities and Exchange Commission, or SEC. This is often the first quiet step a company takes before it lists its shares on the stock market.

The plan is for OpenAI to possibly go public as early as September 2026. Two well known banks, Goldman Sachs and Morgan Stanley, are reportedly leading the process as underwriters. An underwriter helps a company sell its shares safely to investors.

Right now, OpenAI is a private company. In private markets, it is valued at around 852 billion dollars. Analysts who watch this kind of deal expect that once OpenAI becomes a public company, its market capitalization could rise past one trillion dollars.

OpenAI is not alone. Its rival Anthropic is reportedly aiming for its own IPO around October 2026, possibly at a valuation above 900 billion dollars. Other large private companies, such as SpaceX, are also seen as possible IPO candidates this year.

IPO

Initial Public Offering. The first time a company sells its shares to ordinary investors on the stock market.

underwriter

A bank that manages the process of selling a company's shares to investors.

confidential filing

Draft paperwork a company submits privately to a regulator for review before anything becomes public.

valuation

An estimate of how much a company is worth in total.

market capitalization

The total value of all of a public company's shares added together.

Securities and Exchange Commission

The main US government agency that regulates the stock market and public companies.

private company

A company whose shares are owned by a small group of people and not sold on the public stock market.

artificial intelligence

Computer technology built to perform tasks that normally need human thinking, such as understanding language.

Level 3 — Intermediate

OpenAI, the artificial intelligence company behind the widely used chatbot ChatGPT, has quietly begun the early groundwork for a stock market debut. In early September 2026, the company started preparing confidential draft IPO papers to submit to the US Securities and Exchange Commission, with a possible public listing as soon as later that month.

A confidential filing allows a company to submit draft paperwork to the SEC for private review before any of it is disclosed publicly. This gives OpenAI room to work through regulatory questions and detailed financial disclosures without the scrutiny that comes once a filing becomes public. Goldman Sachs and Morgan Stanley are reportedly leading the process as underwriters, the banks that guide a company through pricing and selling its shares to investors.

The numbers involved are striking. OpenAI's current private market valuation sits at around 852 billion dollars, already among the highest ever recorded for a private company. Analysts covering the deal expect that a public listing could push its market capitalization past one trillion dollars, which would rank it among the largest technology IPOs in history.

OpenAI's move comes alongside similar ambitions from its closest rival. Anthropic is reportedly targeting its own IPO around October 2026, potentially at a valuation above 900 billion dollars. Other major private technology companies, including SpaceX, are also being watched as possible IPO candidates this year, suggesting 2026 could become a landmark year for the biggest names in AI and tech finally opening themselves up to public investors.

IPO

Initial Public Offering, the process by which a private company first sells shares to public investors and becomes listed on a stock exchange.

confidential filing

A process that lets a company submit draft regulatory paperwork privately, allowing it to address disclosure and compliance questions before anything is made public.

underwriter

A financial institution, typically an investment bank, that manages the pricing, marketing, and sale of a company's shares during an IPO.

valuation

An estimate of a company's total worth, often based on private funding rounds, projected earnings, or comparable public companies.

market capitalization

The total value of a public company's outstanding shares, calculated by multiplying share price by the number of shares.

Securities and Exchange Commission

The US federal agency responsible for regulating securities markets and protecting investors, which must review a company's disclosures before it can go public.

regulator

A government body that oversees an industry to ensure compliance with laws and standards, such as financial disclosure rules.

private company

Level 4 — Advanced

OpenAI, the artificial intelligence firm whose chatbot ChatGPT reshaped consumer expectations of what software can do, has moved, with characteristic discretion, toward one of the most consequential steps in its corporate history. In early September 2026, the company began preparing confidential draft filings with the US Securities and Exchange Commission, positioning itself for a possible public market debut as soon as later that same month.

The mechanics of a confidential filing are, in themselves, unremarkable to seasoned observers of Wall Street: the process permits a company to submit draft registration paperwork for private regulatory review, allowing it to negotiate disclosure obligations and refine its financial statements away from the immediate glare of public markets. What makes this instance noteworthy is the scale involved. Goldman Sachs and Morgan Stanley are reportedly leading the underwriting effort, a signal that the offering, should it proceed, will be structured with the caution and prestige typically reserved for the market's most closely watched debuts.

OpenAI's present private market valuation, roughly 852 billion dollars, already places it among the most highly valued private enterprises ever assembled. Analysts tracking the prospective offering anticipate that a public listing could carry the company's market capitalization past the one trillion dollar threshold, a figure that would situate it among the largest technology initial public offerings ever recorded and would crystallize, in a single trading session, the market's extraordinary conviction in the commercial durability of generative AI.

That conviction is not confined to OpenAI alone. Its principal rival, Anthropic, is reportedly pursuing a parallel path toward an IPO around October 2026, at a valuation potentially exceeding 900 billion dollars, while other titans of private technology, SpaceX prominent among them, are increasingly regarded as plausible candidates for a public debut before the year closes. Taken together, these developments suggest a market environment in which the boundary between the most ambitious private technology companies and the public markets is narrowing rapidly, testing whether investor enthusiasm for artificial intelligence can be sustained under the disclosure and scrutiny that public ownership demands.

IPO

Initial Public Offering, the formal process through which a privately held company issues shares to the public for the first time, transitioning to a publicly traded entity subject to ongoing disclosure requirements.

confidential filing

A regulatory mechanism permitting a company to submit draft registration documents to a securities regulator for private review, deferring public disclosure until the offering is closer to launch.

underwriter

An investment bank engaged to structure, price, and distribute a company's shares to institutional and retail investors, and to assume a portion of the risk associated with the offering.