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Astor (YC S25) — AI advisor for retail investors

Astor is an AI investment advisor for retail 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.

Astor is a Y Combinator company in the Summer 2025 batch. Its directory entry describes it as: AI advisor for retail investors. The founders listed are Bruno Koba (Founder/CEO), Daniel Tulha Hochstetler (Founder/CTO) (Y Combinator directory entry, August 7, 2025).

6 more companies from YC Summer 2025 ↓

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Astor

New accelerator entry · 2025-08-07 · the record

Summer 2025
batch
5
people
Early
stage
United States of America
region
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What the record says

BatchSummer 2025
Announced2025-08-07
StageEarly
StatusActive
Team size5
IndustryFintech
Sub-industryFintech -> Consumer Finance
SectorsFintech, Investing, Consumer Finance, AI
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringNo
Sitehttps://astor.app/
Previously known asGaus

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Also in YC Summer 2025

Same batch, Fintech first.

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In their words

Astor is an AI investment advisor for retail 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.

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What the Full Report on Astor covers

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  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

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Sourced from the company's Y Combinator directory entry.

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Astor: Accepted into Y Combinator Summer 2025
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Permanent URL: https://mentionfox.com/funding/yc-astor
Last updated 2026-10-20
Primary record: Y Combinator directory entry
Astor (YC S25) — AI advisor for retail investors. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-astor