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Bonsai Partners

Bonsai Partners

Carlsbad, Californiabonsaipartners.com

Overview

Bonsai Partners is a California-based hedge fund manager founded in October 2017 by Andrew Rosenblum, a former investment analyst at Matrix Capital Management . Its investigative research process leads to a concentrated portfolio of high-conviction ideas . The firm looks for ideas off the beaten path to achieve outsized returns . Bonsai Partners, LLC manages a concentrated portfolio of public equity investments through Bonsai Partners Fund, LP .

Year Founded

2017

Portfolio Companies

27

Investments

CompanyDateStageLead
Rail-FlowDec 2025Series ALead
RefurbedOct 2025Early FundingCo-investor
Solfy RenewablesSep 2025VC RoundCo-investor
VivlaJul 2025Early FundingCo-investor
PlaytomicMar 2025Series DCo-investor
View all investments

Key People

Andrew Rosenblum

Managing Partner

Sector & Stage Mix

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Investment Activity

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2021
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2026

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Firmographic Details

HeadquartersCarlsbad, California
Year Founded2017

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