Oak Group
Oak Group is a privately-held, multi-jurisdictional fiduciary firm providing fund administration, corporate, and private client services to ultra-high-net-worth individuals, families, and institutional clients across Guernsey, Isle of Man, Jersey, Mauritius, and The Bahamas, operating under the Opera group.
- Company typePrivate
- Founded1999
- HeadquartersSt. Peter Port
- Headcount—
- GTM typeB2B
- OfferingServices
What Oak Group does
Oak Group is a privately-owned, multi-jurisdictional fiduciary and financial services firm headquartered in St Peter Port, Guernsey, formed in 1999 and operated under the parent holding company Opera Group Limited. The company delivers three integrated service lines: Private Clients (trust structuring, private foundations, private trust company formation, family office services, global tax compliance, real estate holding structures, and philanthropic advisory for ultra-high-net-worth individuals and families); Corporate Services (global offshore incorporations, corporate domiciliation, governance and secretarial services, escrow and independent security trustee services, listing services, financial management, and regulatory compliance); and Private Capital & Institutional Services (fund formation and structuring, institutional fund operations, investor onboarding, fund governance and oversight, fund accounting and reporting, and fractional CFO advisory). Oak Group is part of the Opera group, owned by Pula (the family office of Stephen Lansdown CBE, co-founder of Hargreaves Lansdown) and Sealyham (the family office of Tom Scott), which provides patient long-term capital to support the Project Overture five-year transformation programme.
The underlying business is a regulated professional services model. Revenue is generated through a mix of ad valorem fees on assets under administration, fixed engagement fees, and time-spent charges, with fees determined by published Fee Scales and individual Letters of Engagement. Each operating subsidiary is separately licensed by its home regulator (Guernsey FSC, Isle of Man FSA, Jersey FSC, Mauritius FSC, Central Bank and Securities Commission of The Bahamas), and the group maintains ISO 27001 information security certification. As of the standalone Oak Group disclosures, the firm held $19bn+ in assets under administration with 200 professionals across five jurisdictions; following the April 2026 acquisitions of Accuro and Meritus Trust Company Limited, the broader Opera group operates across eight jurisdictions with combined AUA exceeding $81bn and 600 professionals.
Go-to-market is relationship-driven and enterprise-oriented, with bespoke service delivery handled directly through local offices and relationship managers rather than via intermediaries or digital channels. Oak Group has pursued aggressive inorganic growth, completing five acquisitions between April 2025 and April 2026 (Amber Trust Ltd, HFL Limited, Accuro, and Meritus Trust Company Limited), and has separately announced a proposed divestiture of Oak Fund Services to sharpen focus on private capital and institutional expertise. The company is led by Group CEO Kim Sgarlata, winner of the WealthBriefing European Awards 2025 CEO category, with over 20 years' experience across HSBC, Capco, Accenture, Bank of America Merrill Lynch, and State Street.
Oak Group firmographics
Firmographics- Name
- Oak Group
- Legal name
- Opera Group Limited
- Website
- https://oaktrust.co.uk
- Company type
- Private
- Founded year
- 1999
- Operating status
- Operating
- Short description
- Oak Group is a privately-held, multi-jurisdictional fiduciary firm providing fund administration, corporate, and private client services to ultra-high-net-worth individuals, families, and institutional clients across Guernsey, Isle of Man, Jersey, Mauritius, and The Bahamas, operating under the Opera group.
- Ownership category
- akta.pro rank
Oak Group industry classification
Industry- Product category
- Fiduciary and Fund Administration Services
- NAICS
- Trusts, Estates, and Agency Accounts (52592), Management of Companies and Enterprises (551)
- SIC
- Finance Services (6199)
- akta.pro primary industry
- Family Office Advisory (Single/Multi-Family) (FSAEAAAI)
- akta.pro secondary industries
- Family Office Administration & Operations (Accounting, Reporting, Payroll) (FSAAADAD), Family Business & Succession Advisory (FSAAADAL), Philanthropy, Foundations & Grantmaking Advisory (FSAAADAG), Philanthropy & Foundations Advisory (Donor-Advised Funds, Endowments) (FSAAABAH)
Keywords
Where Oak Group is headquartered
LocationHeadquarters
- HQ city
- St. Peter Port
Offices5 records
Markets served
Oak Group business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others
Revenue model
- Fund Administration Services: Fees for administering investment funds, including fund structuring, governance, accounting, and reporting services. Revenue is generated through a combination of asset-based fees (ad valorem basis) calculated on assets under administration, fixed fees, and time-spent charges.
- Corporate Services: Fees for global offshore incorporations, corporate domiciliation, governance and secretarial services, escrow services, listing services, financial management and regulatory compliance. Revenue derived from fixed fees, ad valorem charges, and time-based billing.
- Private Client Services: Fees for strategic trust structuring, private foundations, PTC formation, family office services, global tax compliance, real estate holding structures, and philanthropic advisory. Revenue includes management fees, administration fees, and time-based advisory charges.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Oak Group product offering
Product offeringCore offering
Oak Group is a privately-owned global provider of tailored fund administration, corporate administration and private client services. It serves ultra-high-net-worth individuals and families, fund managers/institutional investors, and corporate entities through three integrated service lines — Private Clients (trust structuring, private foundations, family office services), Corporate Services (offshore incorporations, governance, secretarial, escrow, listing services), and Private Capital & Institutional Services (fund formation, administration, fund accounting, fractional CFO advisory). Operations span five financial centers (Guernsey, Isle of Man, Jersey, Mauritius, The Bahamas) with combined assets under administration exceeding $19 billion.
Product overview
Oak Group is a privately-owned global provider of tailored fund administration, corporate and private client services. The offering is organized as three core integrated service lines under the Opera umbrella brand: Private Clients (wealth management, trusts, foundations, family office), Corporate Services (offshore incorporations, governance, compliance), and Private Capital & Institutional Services (fund formation, administration, and institutional operations). The company operates across five jurisdictions (Guernsey, Isle of Man, Jersey, Mauritius, The Bahamas) with combined assets under administration of $19bn+ as a standalone group, and $81bn+ following the Accuro and Meritus acquisitions in 2026.
Differentiator
Problem solved
Functional benefit
Brands
- Opera: Parent group brand representing the operating group. Opera stands for O for Oak, P for Pula, and E-R-A for a new era in financial services.
- Opera Group
- Private Clients
- Corporate Services
- Private Capital & Institutional Services
Products and services
- Private Clients
- Corporate Services
- Private Capital & Institutional Services
Quantifiable outcome
- Assets Under Administration exceeding $19 billion
- +1 more outcomes
Companies that use Oak Group
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
Oak Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
Oak Group partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- AccurocoreAccuro is a leading trust and private office business with offices in Jersey, Geneva, London, and Mauritius, known for its value-based culture, technical expertise, and client service. The acquisition significantly strengthens Opera's private client offering and expands geographic reach across the West Atlantic, the Americas, Europe, and the Middle East. Xavier Isaac, CEO of Accuro, joined the Opera Board as Executive Director.
- Meritus Trust Company LimitedcoreMeritus is a Bermuda-based trust firm serving families across the Americas and internationally, specializing in family governance, cross-border trust administration, and estate planning. The acquisition concludes the first wave of growth under Opera's five-year transformation programme, Project Overture.
- HFL LimitedcoreHFL is a family-owned Guernsey-based fiduciary and fund administration firm with over 40 years of experience serving venture capital clients, investors, and private clients. Holds B Corporation certification. The acquisition is Opera's third and supports Project Overture objectives.
- Amber Trust LtdcoreAmber is a well-established Bahamian fiduciary business offering proactive fiduciary services and concierge-level service to ultra-high-net-worth individuals and families. Amber's services include asset structuring, family governance advice, and single-family office establishment and operation. Now operating under the Oak brand.
Scale indicators6 records
Recent moves7 records
Expansion highlights6 records
Oak Group competitors and assessment
Company assessmentDirect peers
- JTC PLC: Jersey-headquartered, London-listed provider of fund administration, corporate services, and private client services across multiple offshore and onshore jurisdictions. Directly comparable to Oak Group in service mix (fund admin, corporate, HNW trust) and Channel Islands base.
- Ocorian: Global fund administration, corporate, and fiduciary services firm with strong Channel Islands and Caribbean presence following the acquisition of Estera. Closely overlaps with Oak's fund, corporate, and private client offerings.
- TMF Group: Large global provider of corporate secretarial, fund administration, accounting, and HR/payroll services across 80+ jurisdictions. Direct peer across Oak's corporate services and fund administration lines.
- IQ-EQ: Private capital-focused fund administration, corporate services, and investor reporting group with multi-jurisdictional reach including Guernsey, Jersey, and Luxembourg. Strongly comparable to Oak's Private Capital & Institutional Services offering.
- Hawksford: Jersey-based provider of corporate, fund, and private client services with offices in multiple offshore and onshore jurisdictions; acquired by CSC in 2024. Directly comparable across Oak's three service lines.
- Maples Group: Cayman Islands-rooted legal, fund services, and fiduciary business with global offices. Comparable to Oak in fund administration, corporate services, and private client/fiduciary offerings for institutional and HNW clients.
- Butterfield: Bermuda-headquartered banking and trust group with private client, fund administration, and corporate services across multiple offshore jurisdictions (Channel Islands, Cayman, Bahamas, Bermuda). Highly comparable given Oak's Meritus (Bermuda) addition.
- Trident Trust: Independent global corporate services, fund administration, and private client firm with offices across the Channel Islands, Cayman, BVI, Mauritius, Bahamas, and other offshore centers. Closely overlaps Oak's jurisdiction and service map.
- Sovereign Group: Guernsey-based private client, corporate, and fund services provider with offices across multiple offshore jurisdictions. Direct comparable within Oak's home Channel Islands market.
Broad incumbents
- Apex Group: Large-scale, Bermuda-based fund administration and financial services platform with global coverage across fund admin, depositary, corporate, and private client. A scaled incumbent against which Oak competes for mandates.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Oak Group social profiles
Digital presenceOak Group compliance and trust
Trust signalCompliance1 record
Oak Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Oak Group leadership team
Management profileNumber of profiles
Profiles9 records
Oak Group subsidiaries and ownership
Company hierarchySubsidiaries13 records
Oak Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Oak Group M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Oak Group
What does Oak Group do?
Oak Group is a privately-owned global provider of tailored fund administration, corporate administration and private client services. It serves ultra-high-net-worth individuals and families, fund managers/institutional investors, and corporate entities through three integrated service lines — Private Clients (trust structuring, private foundations, family office services), Corporate Services (offshore incorporations, governance, secretarial, escrow, listing services), and Private Capital & Institutional Services (fund formation, administration, fund accounting, fractional CFO advisory). Operations span five financial centers (Guernsey, Isle of Man, Jersey, Mauritius, The Bahamas) with combined assets under administration exceeding $19 billion.
Is Oak Group a public or private company?
Oak Group is a private company. It is classified as family owned and is currently operating.
When was Oak Group founded?
Oak Group was founded in 1999.
Where is Oak Group based?
Oak Group is headquartered in St. Peter Port.
How does Oak Group make money?
Three revenue lines are on record. Fund Administration Services are the primary driver. The others are corporate Services and private Client Services.
Who are Oak Group's main competitors?
Direct peers on record are JTC PLC, Ocorian, TMF Group, IQ-EQ, Hawksford, Maples Group, Butterfield, Trident Trust and Sovereign Group. Apex Group is listed as a broad incumbent.
Does Oak Group have an API?
No public API is recorded for Oak Group.
What industry is Oak Group in?
Oak Group's product category is Fiduciary and Fund Administration Services. Its primary akta.pro industry code is FSAEAAAI, Family Office Advisory (Single/Multi-Family), with a secondary code of FSAAADAD, Family Office Administration & Operations (Accounting, Reporting, Payroll). Its NAICS code is 52592 and its SIC code is 6199.