Bruno Koba
Founder/CEOCEO @ Astor. Building an AI advisor for retail investors. Stanford GSB and ex-Nubank, monashees.
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Astor is a personal investing agent for serious investors.
Founded by Bruno Koba (Nubank, monashees) and Daniel Tulha (Stripe, Robinhood), Astor gives every active investor an AI investment advisor working around the clock to surface their next great investment. We’re backed by YC (S25).
Retail investors now account for 25% of all U.S. trading volume, nearly double from 2012. But over 56% still say they don’t feel confident in their investment decisions. Astor fixes that.
Our AI agents uncover opportunities, decode emerging trends, and deliver analysis tailored to you. Instead of drowning in noise, investors gain a clear edge, shifting from guesswork to confident decision-making.
Previously Gaus
CEO @ Astor. Building an AI advisor for retail investors. Stanford GSB and ex-Nubank, monashees.
CTO @ Astor, building an AI advisor for retail investors. Previously at Stripe, Robinhood & Amazon.
Founded 2025 · Source
Source-based assessment · automated evidence rules
The company website offers product access through a trial, free start, app download, purchase, or onboarding with existing-account login. Customer adoption is not established by this evidence.
Company website: home Checked 2026-11-02
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Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.