# ARDSLEY PARTNERS

ARDSLEY PARTNERS is a RIA based in Norwalk, United States.

## Overview

- **Organization type:** RIA
- **Headquarters:** Norwalk, United States
- **Region:** North America
- **Address:** New York, NY, United States
- **Assets under management:** Estimated $5B–$10B (Altss estimate)
- **Website:** www.ardsley.com

## Regulatory record

- **CRD number:** 301116
- **SEC file number:** 801-114966
- **Registration status:** Registered
- **Reports private funds:** Yes
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/301116

## About

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.

## Sectors

- Real Estate
- Private Equity
- Venture Capital
- Infrastructure
- Energy Transition & Renewables
- Private Credit
- Hedge Funds
- FinTech

## People

- William R. Berkley — Founder
- Samantha E. Berkley — Managing Director

## 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.

### 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.

## Related profiles

- [Atomico](https://altss.com/profile/atomico-uk-partners-llp)
- [Raymon Capital Advisors](https://altss.com/profile/raymon-capital-advisors-llc)

---

Last updated: 2026-07-06T01:24:11.460Z

Canonical page: https://altss.com/profile/ardsley-partners

Maintained by Altss — https://altss.com — methodology: https://altss.com/methodology