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Single Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 5 SOURCES

Greyrock Investments

Sydney family-owned private investment company set up by Peter and Yvette Mobbs in 2017; diversified portfolio with specialist focus on education and technology.

USEFUL FOR Fund managers raising capital · Business owners seeking a long-term partner · Co-investors

Family & background

FAMILY
Mobbs
HEADQUARTERS
Sydney, Australia
FOUNDED
2017
OUTSIDE CAPITAL
No — own capital only

Investment approach

SECTORS
EducationSoftware & SaaSReal Estate & PropTech
GEOGRAPHY
AustraliaGlobal
ROUTES
Companies (own capital) · Funds (as LP)
STRATEGIES
Funds (as LP)Public equitiesReal estatePrivate creditPrivate equityVenture capitalDirect investments

Overview

Greyrock Investments Pty Ltd is a family-owned private investment company in Sydney, established by Peter and Yvette Mobbs in 2017. Its portfolio spans domestic and international fixed income and equity funds, listed and unlisted property with a luxury and lifestyle focus, and alternatives (private equity, venture capital, private credit and specialist funds), with concentrated direct positions where it has conviction. Its specialist focus is education and technology, and it gives through a family foundation focused on education, health and Indigenous initiatives.

Investment thesis

Favours understandable businesses, aligned partners and long-term opportunities; concentrates where it has operating expertise (education and technology) while keeping a diversified, income-generating portfolio.

Holdings & investments (1)

  • Five Sigma
    Education

People

  • Peter Mobbs
    Co-founder · source
  • Yvette Mobbs
    Co-founder · source

Frequently asked questions

Greyrock Investments is a single family office based in Sydney, Australia, founded in 2017.

Greyrock Investments invests on behalf of the Mobbs family.

Greyrock Investments invests its own capital into companies and in third-party funds as an LP. Its stated asset mix includes funds (as lp), public equities, real estate, private credit, private equity, venture capital and direct investments.

Greyrock Investments invests in Education, Software & SaaS and Real Estate & PropTech.

Key people at Greyrock Investments include Peter Mobbs (Co-founder) and Yvette Mobbs (Co-founder).

Greyrock Investments's holdings and investments include Five Sigma.

No. Greyrock Investments invests its own capital and does not raise money from outside investors.