RIA · CRD 301116SEC-RegisteredPrivate Fund Adviser

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ARDSLEY PARTNERS

ARDSLEY PARTNERS is an SEC-registered investment adviser in NORWALK, CT, registered since 2019. The firm manages approximately $1.6 billion in regulatory...

ARDSLEY PARTNERS

ARDSLEY PARTNERS is an SEC-registered investment adviser in NORWALK, CT, registered since 2019. The firm manages approximately $1.6 billion in regulatory assets. It has 11 employees and 7 investment advisers.

General information

Firm type

RIA

Location

Region

North America

Country

United States

City

Norwalk

Corporate office

New York, NY, United States

Principals

William R. Berkley

Founder

Samantha E. Berkley

Managing Director

Sector focus

Real EstatePrivate EquityVenture CapitalInfrastructureEnergy Transition & RenewablesPrivate CreditHedge FundsFinTech

Frequently asked questions

Who runs investment decisions at Ardsley Partners?

The firm is overseen by Founder William R. Berkley, with day-to-day investment management led by a professional team including Managing Director Samantha E. Berkley. The office employs fewer than 20 investment professionals.

How does Ardsley Partners source proprietary deal flow?

Ardsley leverages deep industry ties to W.R. Berkley Corporation, accessing insurance-market data and relationships to identify differentiated opportunities in specialty finance, insurance-linked strategies, and real estate.

Is Ardsley Partners a single family office or does it operate more like an investment firm?

Ardsley functions as an institutional multi-strategy investment platform — it allocates across asset classes and stages, makes direct investments, and partners with external managers. It sits between a single-family office and a diversified asset manager.

What investment stages does Ardsley typically target?

The firm invests across the capital structure, including buyout and growth equity in private companies, real estate development and acquisition, venture-stage technology startups, infrastructure projects, and private credit opportunities.

Which sectors does Ardsley explicitly avoid?

Ardsley has no public list of excluded sectors. However, its disclosed investments concentrate heavily on insurance-adjacent industries, real estate, and energy infrastructure.

Where does the underlying wealth come from?

The wealth originates from William R. Berkley's founding and long-term leadership of W.R. Berkley Corporation, a publicly traded insurance holding company with a market capitalization exceeding $20 billion (as of 2024).

Does Ardsley maintain philanthropic structures, and how are they separated?

Yes, the Berkley Family Foundation operates independently from the investment office. It focuses on education, healthcare, and community development in the New York area.

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