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Islandbridge Capital Limited

Multifamily office listing in London, United Kingdom.

  • SEC-registered
  • Founded 2008
Regulatory AUM
$1.6 billion
Employees
16
Clients
26-50
Founded
2008

London-based multi-family office providing investment management and integrated strategic advice to families and successful entrepreneurs worldwide.

Overview

Islandbridge Capital Limited is a multi-family office founded in 2008. Its London team works globally with families and successful entrepreneurs, combining investment management with advice across clients’ wider financial lives.

History

Islandbridge was founded in 2008 and became a certified B Corporation in 2021. The firm says its decisions consider clients, employees, suppliers, the community and the environment.

Leadership

Joseph McCarthy is Islandbridge’s Founder and Chief Investment Officer.

Services

The firm’s family-office work helps clients manage investments and their wider financial lives, including next-generation education and foundation support.

Islandbridge provides investment services across public and private markets. Its private-markets team oversees origination, execution and reporting, tailoring activity to each client’s needs.

What the firm offers

  • Investment management
  • Philanthropy
  • Family governance and education

Client Focus

Islandbridge serves families and successful entrepreneurs, with a London team operating globally.

Approach

Islandbridge describes its model as independent and relationship-led. The firm says it invests alongside clients and builds portfolios around their needs.

Its investment process is research-intensive and long term, supported by a global network that serves clients and investment partners.

The firm backs smaller, high-growth companies and management teams, with investment interests spanning climate change, carbon transition and social inclusion.

Registration

The Financial Conduct Authority lists Islandbridge Capital Ltd as authorised under firm reference number 491377.

By the numbers

Regulatory AUM by year$0K$445M$890M$1.3B$1.8B20212022202320252026
Source: SEC Form ADV data (Part 1A, Items 5A, 5D, 5F) via SEC Information About Registered Investment Advisers files and IAPD, CRD 312174. As of .
Regulatory assets under management
YearRegulatory AUMDiscretionaryNon-discretionary
2021$737 million$25 million$712 million
2022$821 million$25 million$796 million
2023$926 million$25 million$901 million
2025$1.1 billion$230 million$825 million
2026$1.6 billion$503 million$1.1 billion
Average AUM per client by year$0K$20M$40M$61M$81M20212022202320252026
Source: SEC Form ADV data (Part 1A, Items 5A, 5D, 5F) via SEC Information About Registered Investment Advisers files and IAPD, CRD 312174. Regulatory AUM divided by the client count reported in Item 5D. Client types reported as fewer than 5 are not counted, so this is approximate. As of .
Average AUM per client
YearAverage AUM per client
2021$46 million
2022$51 million
2023$54 million
2025$41 million
2026$74 million
Employees by year049131820212022202320252026
Source: SEC Form ADV data (Part 1A, Items 5A, 5D, 5F) via SEC Information About Registered Investment Advisers files and IAPD, CRD 312174. As of .
Employees reported on Form ADV
YearEmployees
20219
20228
202311
202513
202616

FAQs

What type of firm is Islandbridge Capital?

Islandbridge Capital is a London-based multi-family office that provides investment management and integrated strategic advice to families and successful entrepreneurs.

What investment markets does Islandbridge cover?

The firm invests across public and private markets. Its private-markets team oversees origination, execution and reporting tailored to client needs.

Who leads Islandbridge Capital?

Joseph McCarthy is the firm’s Founder and Chief Investment Officer.

  • LocationMultifamily offices in United Kingdom

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    Profiles of Bedrock Group, Beryllus Capital, and MDR Mayfair give readers nearby examples on the same site. Comparing their locations, stated services, and client focus with Islandbridge Capital Limited can help clarify which questions matter for a London based family or successful entrepreneur.

Sources

  1. Islandbridge Capital
  2. Islandbridge Family Office
  3. Islandbridge Private Markets
  4. Islandbridge Values
  5. Islandbridge Investments
  6. Islandbridge B Corp Report
  7. Islandbridge careers and associate platform
  8. Financial Conduct Authority published records

Claim or correct this profile

This profile is a factual summary written in our own words from public sources. It is for information only. It is not an endorsement, rating, ranking or recommendation, and it is not investment advice. MultiFamilyOffices.com is not affiliated with the SEC or with this firm unless stated. Form ADV figures are self-reported by the firm.

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