Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.
Scores, valuations, and signals for Nubank, OpenAI, and 370+ companies. 5-min read every Tuesday.
The world's largest digital banking platform outside of Asia, serving over 130 million customers across Brazil, Mexico, and Colombia as of June 2026.
| Industry | Fintech |
| Stage | Public |
| IPO Status | Public |
| Valuation | $115B |
| Total Funding | $2.4B |
| Headquarters | São Paulo, Brazil |
OpenAI is valued at $852B — the world's most valuable AI company, backed by $27B in funding. Track IPO readiness score, funding rounds, and timeline.
| Industry | Artificial Intelligence |
| Stage | Pre-IPO |
| IPO Status | Pre-IPO |
| Valuation | $920.0B |
| Total Funding | $65.4B |
| Headquarters | San Francisco, CA |
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Nubank is valued at $115B. OpenAI is valued at $920.0B. Both valuations are based on the most recent private funding rounds tracked by TechStackIPO.
Nubank has raised $2.4B. OpenAI has raised $65.4B.
Nubank is currently already public. OpenAI is currently pre-IPO. Track both on TechStackIPO for S-1 filings and IPO announcements.
Nubank operates in Fintech, while OpenAI operates in Artificial Intelligence.
Nubank is a Fintech company valued at $115B with $2.4B raised. OpenAI is a Artificial Intelligence company valued at $920.0B with $65.4B raised. See TechStackIPO's full side-by-side comparison for IPO readiness scores, funding timelines, and investor data.
Accredited investors can access pre-IPO shares in Nubank and OpenAI through secondary market platforms, pre-IPO funds, and broker-dealer platforms that facilitate private company transactions. TechStackIPO's marketplace section tracks available access options for both companies. Pre-IPO investments carry higher risk and limited liquidity.