About
About Sophon Capital
Sophon Capital is an AI-focused angel fund investing at pre-seed and seed in companies building systems that compound with use.
What we back
Back founders attacking real workflow bottlenecks with AI systems that have credible paths to step-change improvement and compounding advantage.
Our public investment focus is pre-seed & seed, with initial $10k–$75k checks. We are especially interested in AI systems for workflows where reliable automation and evaluation matter.
How we evaluate
Sophon Capital evaluates opportunities through four lenses focused on bottlenecks, compounding data advantage, reliable autonomy, and embedding depth.
Read the investment methodology →Founder
Josh Arnold
Josh Arnold founded Sophon Capital to back companies automating high-stakes decisions. He brings operational experience from co-founding Patronus AI (ML-driven legal outcome prediction), strategy work with Fortune 500 firms at Strategy&, and an analytical foundation from the Wharton School.
For founders
Founders can submit a deck for an automated First Look. It is an informational review, not an investment decision or a promise of a meeting. Sophon publishes a 48-hour target for a human reply to submissions.
Submit a deck →