Aureus Sigma Capital
Evidence-led investing
in Vietnam's capital markets.
Aureus Sigma Capital invests its own capital in Vietnam's listed markets. We combine systematic research with long-term discipline, and hold ourselves to institutional standards of risk management and governance.
Market today
As of 6 Nov 2026Source: ASC, from public market data. For information only; not a recommendation.
Our approach
Disciplined by design
Evidence before conviction
Investment ideas must hold up across full market cycles, out of sample and net of realistic costs, before capital is committed.
Systematic execution
Decisions follow pre-defined rules, applied consistently in calm and volatile markets alike.
Risk first
Exposure, concentration and drawdown limits are set before risk is taken, and enforced without exception.
A long horizon
We judge outcomes over market cycles, not months, and measure ourselves on adherence to process.
Research
The ASC Guide to the Vietnamese Market
A quarterly chart book on Vietnam's capital markets: valuation, ownership and flows, sector dynamics and twenty-six years of market history.
Leadership
Duc (Huy) Nguyen, Founder & CEO, has spent more than twenty years in Vietnam's capital markets: as Chief Executive Officer of Techcom Capital, Managing Director of Techcom Securities and Chief Financial Officer of Orient Commercial Bank (OCB), following corporate finance and advisory at Deloitte Vietnam.
LeadershipInsights
Perspectives
- DisciplineRules before pressure
Why systematic discipline matters most when Vietnam's markets move fastest. - RiskPlanning for drawdowns
Losses are part of investing. How we prepare for them before they occur. - PartnershipFIDES Vietnam and Aureus Sigma Capital sign a memorandum of understanding
A framework to explore cooperation within applicable law.