Our People

The team at ABACUS IB offer extensive industry experience across a diverse range of financial markets. Our goal is to build relationships framed by trust while delivering solutions built on comprehensive industry understanding.

Ari’s extensive professional experience brings a wealth of global opportunity and industry expertise to ABACUS IB. After graduating with a degree in Economics from Cambridge University, he began his career at Bank Negara Malaysia, before going on to spend the following two decades at global investment institution Deutsche Bank, based in New York and London. Ari returned to Asian markets with a role within Citigroup in Singapore, before taking up positions at UBS and then APG in Hong Kong. Prior to founding ABACUS Holdings, Ari was Country Head of the Malaysian office of CLSA Securities.

With his comprehensive experience as a Portfolio Manager for leading global clients, Ari’s extensive network and industry knowledge provides an invaluable resource to ABACUS IB and its partners.


Rouvin’s career began with graduation from the General Electric Financial Management Programme, before taking up roles in GE Industrial and then GE Capital in Southeast Asia and America, working across multiple positions in the iconic Fortune 500 company. He later went on to join CIMB, where he held roles in Group Strategy and Strategic Investments, before being promoted to Head of Direct Investments.

His experience in asset management running CIMB funds included capital raising, origination, portfolio management, and a variety of corporate transactions from acquisitions to company exits. He has also had the pleasure of serving on a wide range of Boards and Executive Committees for key portfolio companies.

Rouvin is passionate about building great business relationships, building successful businesses, and generating value creation opportunities for clients of ABACUS IB


Vivian graduated with a Bachelor of Finance and Investment from Tunku Abdul Rahman University College, Kuala Lumpur, before continuing her studies and gaining a Bachelor of Science in Finance from Coventry University, United Kingdom.

Her professional career began at CIMB IB, developing industry experience in comprehensive financial analysis. She is now a CFA Level 2 candidate who continues to keenly explore and expand her investment and advisory expertise.

Vivian’s pinpoint attention to detail and meticulous financial analysis provide a valuable source of financial guidance for ABACUS IB and its clients.