Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.
Scores, valuations, and signals for Arm Holdings, OpenAI, and 370+ companies. 5-min read every Tuesday.
Semiconductor IP company designing the processor architecture in 99% of smartphones.
| Industry | Semiconductors |
| Stage | Public |
| IPO Status | Public |
| Valuation | $238.4B |
| Total Funding | $4.2B (SoftBank acquisition) |
| Headquarters | Cambridge, UK |
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 | $852B |
| Total Funding | $55.4B |
| Headquarters | San Francisco, CA |
Arm Holdings is valued at $238.4B. OpenAI is valued at $852B. Both valuations are based on the most recent private funding rounds tracked by TechStackIPO.
Arm Holdings has raised $4.2B (SoftBank acquisition). OpenAI has raised $55.4B.
Arm Holdings is currently already public. OpenAI is currently pre-IPO. Track both on TechStackIPO for S-1 filings and IPO announcements.
Arm Holdings operates in Semiconductors, while OpenAI operates in Artificial Intelligence.
Arm Holdings is a Semiconductors company valued at $238.4B with $4.2B (SoftBank acquisition) raised. OpenAI is a Artificial Intelligence company valued at $852B with $55.4B 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 Arm Holdings 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.