AXYS Group - About Us - Executive Team


Didier Merven Founder

Didier Merven set up in 1992 Portfolio Investment Management Ltd (PIM), one of the very first professional portfolio management companies in Mauritius.  Over the following 27 years, Didier Merven has significantly contributed to the diversification of the financial services activities of the Group and continues to oversee the investment management for the high net worth clients.

Didier Merven

Michel Guy Rivalland Chief Executive Officer

Michel Rivalland is a graduate in Economics, Bsc (Hons), from Surrey University UK. He joined AXYS Group in 1999, and became a shareholder and Director in 2002. Since 1st July 2010 he occupies the role of CEO of AXYS Group. Michel Rivalland has been instrumental in transforming what started off as an asset management company into a diversified financial services group covering services which include brokerage, corporate finance, asset and wealth management, corporate services, asset financing and deposit taking.

Michel Guy Rivalland

Sébastien Pitot Chief Operating Officer

Sébastien holds a 'BTS en Informatique de Gestion' from the Mauritius Chamber of Commerce and Industry Business School and an Executive MBA from the University of Birmingham. Sébastien started his career in the IT sector, more specifically in programming. He then spent five years in an asset management company holding various functions before joining AXYS Group in March 2005. He spent two years at AXYS Capital Management before joining AXYS Leasing Ltd as Business Development Manager, then General Manager in 2008 and Managing Director since 2010. He was appointed as Project Lead in August 2016, Head of Operations in April 2019 and is now our Chief Operating Officer.

Sébastien Pitot

Thierry Adolphe Head of Commerical

Thierry is an associate member of the Institute of Chartered Secretaries and Administrators and holds an MBA from Université de Paris Pantheon - La Sorbonne. He re-joined Frontière Finance as Managing Director in 2019, after having previously worked there as Company Secretary earlier during his career. He later ventured into trading on derivatives markets and got private wealth management exposure with PSG Investment Bank and Aspen Risk Managers in South Africa.

Back in Mauritius in 2004, he co-setup a BPO business for a French outsourcing group and ran its finance, HR and administrative functions, before joining the leadership of ABAX (now Ocorian Corporate Services) where he developed the ABAX network and business on the African continent, and later led the Branding and Communications department. Thierry has served on the board of directors of numerous companies involved in most sectors of industry.

He was appointed Head of Commerical in July 2020.

Thierry Adolphe

Louis Lallia Managing Director
Client Coverage

Louis holds a B.A in Modern Literature from the Université de la Sorbonne-Nouvelle and is an Alumni of l’Institut des Etudes Politiques de Paris (Sciences-Po Paris) from which he holds an M.A in Finance and Strategy. Louis started his career in 2005 as an Investment Analyst with Silchester International Investors; a London based Long Term Equity Investment Fund with over $20bn under management. He moved to Mauritius in 2009 and set up the Front Office in the region for Plurigestion S.A., a Swiss-based Financial Advisory firm with some $2bn under management. Louis joined AXYS in 2012, responsible for the international development of the Group and in April 2019 he was appointed Managing Director of AXYS Private and now occupies the position of Managing Director, Client Coverage.

Louis Lallia

Constantin De Grivel Managing Director
AXYS Investment Partners

Constantin holds an MSc in Civil Engineering from Ecole Speciale des Travaux Publics in Paris and an MSc in Finance from Ecole Superieure de Commerce de Paris. He spent four years with JP Morgan in London where he was structuring and marketing derivative products for both the European corporates and high net worth individuals. He then joined AXYS Group in 2010 where he is in charge of developing the business within the region as well as structuring financial products. Constantin is the current Managing Director of AXYS Investment Partners Ltd and chairs the Investment Committee.

Constantin De Grivel

Melvyn Chung Kai To Managing Director
AXYS Stockbroking

Melvyn holds a Master in Management (Banking & Financial Markets) from Toulouse Business School. He joined AXYS Stockbroking in April 2012 as a trader and assisted the research unit. He previously traded energy-related derivatives for a proprietary trading house, as well as dealt in the US Equity markets out of a Paris-based execution brokerage company. He was appointed Managing Director of AXYS Stockbroking in early 2017.

Melvyn Chung Kai To

Ritesh Bissessur Principal Officer
NWT Mauritius

Ritesh holds a Bachelor of Commerce with specialisation in Business Administration and is a member of the Society of Trust and Estate Practitioners (STEP). 

He was with Deutsche Bank Limited for 7 years where he acquired skills and experience in the trust and corporate services unit. 

Ritesh is a member of the Mauritius Institute of Directors (MIoD).  He joined NWT (Mauritius) Limited in January 2013 as Manager, Trusts and Corporate Services and since August 2020 occupies the position of Principal Officer.

Ritesh Bissessur

Kevin Chooromoney Principal Officer
Frontière Finance

Kevin has read law at the University of Mauritius and holds an LLB (Hons). He is also a Certified Compliance Professional and has over 12 years of experience in the global business sector. He joined Frontière Finance in 2009 and has since held several managerial positions across the corporate, compliance and legal department. Kevin was appointed as an Executive Director and the Principal Officer of Frontière Finance in October 2020. He also serves as non-executive director on the board of several global business companies as well as domestic companies.

Kevin Chooromoney

Colin R. Walker Chief Executive Officer
NWT Geneva

Colin is a Fellow of the Institute of Chartered Accountants, Graduate of Pacific Coast Banking School Washington University, a member of STEP and an Engineering graduate.

Colin Walker is Chief Executive Officer of the Geneva based business and Head of Business Development for the NWT Group since 2000. Previously he was Chief Executive of Jardine Matheson Trust Group from 1993 to 2000 and he held senior positions with Bank of America in Jersey and Geneva from 1978 to 1992 including that of Head of Private Banking for Switzerland. Colin has many years of experience in all areas of trusteeship and wealth management. Whilst based in Geneva, he travels extensively for his clients and to develop the business.

Colin R. Walker

Vikash Tulsidas Chief Executive Officer
SPICE Finance

Vikash is a graduate from the University of Warwick, UK and joined AXYS Group in 2004. He occupied the position of the Managing Director of AXYS Stockbroking from 2004 until end 2016 and specialised in trading on stock markets both locally and internationally. He was an active member of the executive committee of the Port-Louis Stockbroking Association until end 2016. Vikash has been a member on the board of directors of the Stock Exchange of Mauritius for 9 years until December 2016 and a Director of the Central Depository & Settlement (CDS) for 8 years. He was also the Chairman of the CDS for 3 years until December 2016. Vikash is a licensed Investment Advisor by the Financial Services Commission (FSC).

Since the 1st of February 2017, Vikash is now the Chief Executive Officer of SPICE Finance Ltd which is regulated by the Bank of Mauritius and the FSC. Vikash is also responsible for the development of the group and is a key member of the Capital Markets team within AXYS. Since 2008, he is a director of NWT (Mauritius) Ltd, an offshore management company and also a non-executive director on several entities within the group.

Vikash Tulsidas