OpenAI has filed a confidential S-1 prospectus with the Securities and Exchange Commission. The artificial intelligence lab is preparing for a landmark initial public offering potentially valuing the company at $1 trillion. Goldman Sachs and Morgan Stanley serve as lead underwriters. The public listing could occur as early as September 2026, with late 2026 emerging as the most likely window.
The company’s financial trajectory justifies the ambitious valuation. Run-rate revenue reached $25 billion in February 2026, up substantially from $20 billion at year-end 2025. CEO Sam Altman has publicly targeted $100 billion in annualized revenue by 2027. At current growth rates, OpenAI is expanding four times faster than Alphabet and Meta did during comparable growth phases. The company reportedly turned cash flow positive in recent quarters, a milestone most venture-backed startups never achieve.
Recent funding rounds demonstrate investor appetite despite uncertain timelines. In March 2026, OpenAI closed a record $122 billion raise at an $852 billion valuation. Amazon committed up to $50 billion, with NVIDIA and SoftBank each pledging $30 billion.
Microsoft, OpenAI’s original strategic partner, continued participating without disclosing new amounts. The round included a first-time component: $3 billion from individual retail investors through banking channels, effectively stress-testing demand for OpenAI equity ahead of public markets.
Infrastructure spending remains the critical constraint on growth. OpenAI plans to deploy over $1.4 trillion across data centers, semiconductor procurement, and talent acquisition. The Stargate project represents the most ambitious compute infrastructure buildout in technology history.
This spending scale dwarfs traditional tech company capital expenditures, which explains why OpenAI needed capital injections from AWS and NVIDIA simultaneously as service providers and equity investors.
The IPO structure presents legal complexity. OpenAI operates as a Public Benefit Corporation controlled by a nonprofit foundation, a governance model that complicates how public equity works. The SEC review process will likely extend the standard IPO timeline, potentially pushing the listing into Q4 2026 despite September targets.
