Sigma Trust Intl` LLC “Sigma” is a privately-owned partnership, created in July 2016, and housed within its parent company Global Trust Advisors (GTA). Established in 1997, as Grant Thornton Advisors, GTA is a company specialising in financial and corporate services, and has an extensive worldwide client network, which include Investment Funds, holdings and commercial enterprises, companies listed in the Stock Exchange, as well as other SME’s.

The Sigma team is comprised of 15 professionals, who jointly accumulate expertise and know-how from distinct backgrounds, including former Investment and Private bankers – Jefferies, Kleinwort Benson, Banque International de Luxembourg and Novo Banco, and from Auditing/Accounting firms – Arthur Andersen, Ernst & Young, Coopers & Lybrand and KPMG.
The Team operates from Luxembourg (HQ), Paris and Lisbon, and focuses on the following advisory and buy-side services.



Sigma Trust International invests directly or on behalf of large investors in the real estate sector. We are looking for opportunities in the following sectors: Health Care, Hospitality, Offices, Retail, Student Housing, Co-Living and Logistics.


The Team is comprised of generalists focusing on SME transactions in Africa, Western Europe and South America.
The transactions typically have an Enterprise Value of Euros 100 million to Euros 500 million, and are usually Sell side oriented.


Our main strategy with our buy-side Clients – private equity sponsors, hedge funds and family offices, is to originate investment opportunities and help them with their exits – primarily trade sale and reverses. The Enterprise Value for these clients is Euros 500 million to Euros 3 billion, and the geographical focus is Western Europe.
All sponsor driven transactions are derived from the Luxembourg office.


Sigma focuses on arranging financing for corporate clients, private equity funds and family offices. The financings are global in scope and range within an EV of Euros 20 million to Euros 300 million.
The capital raise structures are typically high yield, corporate bonds, term notes, mezzanine or hybrids in nature.


As a complement to our financial advisory services, Sigma, through its parent company Global Trust Advisors S.A. (GTA) provides all tax, domiciliation and accounting services for a full range of companies – Corporate, Family Offices, and Private Equity funds. Presently, GTA provides services to 450 global clients all domiciled in Luxembourg.


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