OpenAI's SEC Filing: Is It the Biggest Tech IPO of
Published 6/12/2026, 4:03:21 AM
Short answer: Likely not the single largest by offering size, but one of the two most significant tech IPOs of the decade alongside SpaceX.
SEC Filing Status
OpenAI submitted a confidential S-1 to the SEC around May 22, 2026, with public confirmation on June 8, 2026. The company stated: "We recently submitted a confidential S-1. We expect it to leak so we're just announcing it." Lead underwriters are Goldman Sachs and Morgan Stanley, with JPMorgan also involved. The target listing window is Q4 2026 (September–November), subject to market conditions and board approval.
Valuation Estimates
| Metric | Figure |
|---|---|
| Current private valuation | $852 billion (post March 2026 funding round) |
| Secondary market (Forge, June 11, 2026) | $908.81 billion ($733.54/share) |
| IPO target (rumored) | $830B–$1 trillion |
| Total capital raised | $190.6+ billion |
Revenue trajectory: $3.7B (2024) → $20B+ (2025 annualized) → $25B (2026 annualized run rate).
Competitive IPO Landscape (2026)
Three major AI/aerospace companies are racing to IPO simultaneously:
| Company | Valuation | Offering Size | Filing Status |
|---|---|---|---|
| SpaceX | ~$1.77 trillion | ~$75 billion raise | SEC filing active; trading as SPCX |
| Anthropic | ~$965 billion | TBD | Confidential S-1 filed early June 2026 |
| OpenAI | $852B–$1 trillion | TBD | Confidential S-1 filed June 8, 2026 |
SpaceX appears positioned to claim the largest absolute stock market debut in history (~$75B raise), which would surpass Saudi Aramco's $29B record. However, OpenAI's IPO would likely be more transformative for investor exposure to AI infrastructure and could set valuation benchmarks for the entire sector.
Key Financial Metrics
| Metric | Value |
|---|---|
| 2025 Revenue (annualized) | ~$20B |
| 2026 Projected Revenue | $25–42B |
| 2026 Cash Burn | ~$25–27B |
| Gross Margin (2025) | ~33% (down from ~40% in 2024) |
| Weekly Active Users | ~900 million |
| Expected profitability | 2029–2030 |
| Additional capital needed by 2030 | ~$207B (HSBC estimate) |
Structural concern: Inference costs reached $8.4B in 2025 and are projected to rise to $14.1B in 2026 (68% increase). Unlike traditional software, per-query costs don't fall with scale — a key question for public market investors.
Competitive Pressure
Anthropic has overtaken OpenAI in enterprise market share, with Claude now commanding over 50% share in some segments. Developer market share shows Anthropic at 54% enterprise coding vs OpenAI's 21%.
Conclusion
OpenAI's SEC filing signals preparation for what would be one of the two most significant tech IPOs of the decade (alongside SpaceX). While SpaceX may claim the largest absolute dollar offering (~$75B), OpenAI's IPO will likely be more transformative for AI sector exposure and could set valuation benchmarks for the entire industry. The combined effect of OpenAI, SpaceX, Anthropic, and Databricks IPOs in 2026 could collectively exceed $200 billion in offerings, fundamentally reshaping equity markets.
Evidence Gaps
The claims could not be fully resolved because the research outputs referenced sources by publication name (WSJ, Crypto Briefing, FT, etc.) without providing traceable URLs. The underlying data supports the filing timeline and valuation figures, but independent verification of specific claims requires access to the original source documents.
Note: The data reflects a scenario set in June 2026. OpenAI's actual IPO timeline, valuation, and market conditions may differ from these projections.