Astor, an SEC-registered AI-native investment advisory platform, has closed a $5m seed funding round to expand access to personalised financial guidance for everyday American investors.
The round was led by Monashees, with contributions from Y Combinator, Goodwater Capital, Gilgamesh Ventures, 468 Capital, Valutia, Sunshine Lake, and individual investors from Stripe and OpenAI.
Since going live, the platform has drawn thousands of users and seen more than $200m in brokerage accounts linked to the service. The capital raised will be directed towards strengthening Astor’s product, engineering, and growth functions, as well as broadening its service offerings.
The platform was founded by Bruno Koba and Daniel Tulha, who both grew up in Brazil, where being matched with a financial adviser upon opening a brokerage account is standard practice regardless of wealth. Upon relocating to the United States, the pair discovered that the vast majority of Americans manage their investments without any professional guidance.
The two joined Y Combinator’s Summer 2025 cohort to build out their solution. Koba previously served as a FinTech investor at Monashees and as a data scientist at Nubank, where he developed machine learning models to extend credit access at scale. Tulha brought engineering experience from Stripe and Robinhood, where he worked on financial infrastructure.
The gap Astor seeks to fill is considerable. Traditional financial advisers commonly require clients to hold a minimum of $500,000 in assets, leaving the majority of Americans without access to professional advice. A
Astor links directly to users’ existing brokerage accounts and analyses their portfolios across dimensions including performance, risk, and diversification, before delivering tailored recommendations. The platform operates under a fiduciary duty, legally obligating it to act in clients’ best interests.
Astor co-founder and CEO Bruno Koba said, “We looked around and everyone we knew was investing on their own, with many treating their brokerage accounts like a casino. Back home, even the most basic advisor gives you the sense that someone is paying attention to your money. Here, unless you’re wealthy, nobody is.”
Monashees partner Fabiola Quinzaños said, “Most people don’t need more investment products, they need someone in their corner. Astor gives people the knowledge and guidance to actually take control of their financial future.
“Bruno brings the investor perspective from his years at Monashees and the personal conviction of having lived this problem, while Daniel brings technical depth from building financial products at Stripe, and Bruno going from Monashees investor to Monashees-backed founder is the kind of full-circle story we love to be part of.”
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