Sol Bier, Angel Investor

Sol Bier is the Founding Partner of Factorial Funds, where he focuses on backing frontier technology companies and emerging platforms. His investment approach emphasizes long-term vision and supporting founders building transformative products across AI, defense, and advanced computing. He has invested in companies such as The Bot Company, xAI, Anduril Industries, and ElevenLabs, reflecting his interest in artificial intelligence, national security technology, and next-generation media tools. His portfolio demonstrates a commitment to scaling ventures that redefine industries. As an angel investor, Bier recently invested in Arcade, a Series A company valued at $25M, underscoring his focus on startups that merge innovation with practical applications in digital infrastructure and interactive technology.