Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.
Scores, valuations, and signals for Castelion, Stripe, and 370+ companies. 5-min read every Tuesday.
Defense technology company developing hypersonic missiles and high-speed flight testing infrastructure designed for rapid, low-cost production and deployment.
| Stage | Series A |
| IPO Status | Pre-IPO |
| Valuation | $180M |
| Total Funding | $64.2M |
| Headquarters | Torrance, CA |
Stripe is a global financial infrastructure platform for businesses. Following its May 2026 IPO, the company is publicly traded on the NYSE with a market cap exceeding $180B.
| Industry | Fintech |
| Stage | Pre-IPO |
| IPO Status | Private |
| Valuation | $159B |
| Total Funding | $9.4B |
| Headquarters | San Francisco, CA |
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Castelion is valued at $180M. Stripe is valued at $159B. Both valuations are based on the most recent private funding rounds tracked by TechStackIPO.
Castelion has raised $64.2M. Stripe has raised $9.4B.
Castelion is currently pre-IPO. Stripe is currently private. Track both on TechStackIPO for S-1 filings and IPO announcements.
Castelion operates in an undisclosed sector, while Stripe operates in Fintech.
Castelion is a private tech company valued at $180M with $64.2M raised. Stripe is a Fintech company valued at $159B with $9.4B 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 Castelion and Stripe 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.