Astor

Astor is an SEC-registered AI investment advisor built for retail investors. It connects to a user's existing brokerage accounts, reviews their holdings across performance, risk and diversification, monitors markets around the clock, and delivers tailored research and recommendations through a chat and voice interface. Founded in 2025 by ex-Nubank and ex-Stripe/Robinhood engineers, the company went through Y Combinator's Summer 2025 batch and raised a $5M seed led by Monashees.