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Riskelia is a research firm specialized in the dynamic detection of chaotic moves in financial markets. The team gathers academic researchers as well as practionners to provide a synergy of complementary skills.

Jean-Jacques Ohana Jean-Jacques
Ohana
Jean-Jacques Ohana Jean-Jacques
Ohana
Steve Ohana Steve
Ohana
Steve Ohana Steve
Ohana
Armand Castiel Armand
Castiel
Armand Castiel Armand
Castiel
Carine Ohayon Carine
Ohayon
Carine Ohayon Carine
Ohayon
Benoit Guilleminot Benoit
Guilleminot
Benoit Guilleminot Benoit
Guilleminot
Christophe Lerolle Christophe
Lerolle
Christophe Lerolle Christophe
Lerolle

Jean-Jacques Ohana, CFA

President, cofounder of Riskelia

Experience:
  • Finaltis, Hedge Fund - Senior Fund Manager
  • Natixis Asset Management - Global Macro Fund Manager
  • IXIS Asset Management - Principal Fund Manager of a Managed Futures Fund
  • Crédit Agricole Asset Management - Chief of market risk management
Education:
  • CFA Charterholder
  • Ecole Centrale Paris

Steve Ohana, PhD

Managing Director, cofounder of Riskelia

Experience:
  • Professor of finance at ESCP Europe, research interests: commodity markets, tactial asset allocation, exteme market events
  • Lecturer at Birkbeck
  • Consultant in risk management and portfolio management for energy companies and hedge funds (GDF Suez, Constellation Energy, Poweo, SGAM AI...)
  • 3-year research partnership with GDF Suez on energy price modelling and dynamic commodity portfolio optimization
Education:
  • Post-Doc at Birkbeck (University of London)
  • PhD at Université Paris-Dauphine
  • Master of finance at University Paris VI
  • Ecole Polytechnique

Armand Castiel

Managing Partner

Experience :
  • Dresdner Kleinwort, London : Managing Director, Head of Euro Interest Rates Swaps
  • Calyon/CAI Paris : Managing Director, Head of Euro Interest Rates Swaps, Options and Govies.
  • Société Générale Paris : Director, Head of FRF and DEM Interest Rates Swaps
  • Salomon Brothers London : Vice President, FRF Interest Rates Swaps
Education :
  • University Paris Dauphine, MS in Automatics
  • Ecole des Mines de Paris, Specialized in Mathematics & Automatics
  • Ecole Polytechnique, Degree in Engineering

Carine Ohayon

Business Development Director

Experience:
  • Business Development Director at Riskelia
  • Infinancials – Founder (innovative business valuation and equity research solutions)
  • BNP Arbitrage – Strategic Equity Derivatives
  • BNP BFI – Structured Products, Equity derivatives
Education:
  • ENSAE – Paris Graduate School of Economics, Statistics and Finance
  • HEC Paris – School of Management

Benoit Guilleminot, PhD

Director of Research and Innovation

Experience:
  • Development of innovative methods for Riskelia
  • Commodities Quantitative Modeling, COMISEF (European Research Network)
  • Front/Middle Office Development - Crédit Agricole Asset Management
Education:
  • PhD in Mathematical Finance (University of London)
  • MSc. (“Research”) in Applied Mathematics (ENS Cachan)
  • MSc. in Computer Science and Software Engineering (Université de Technologie de Compiègne)

Christophe Lerolle

Chief Technology Officer

Experience:
  • Natixis, Credit Derivatives - Consultant in the Stress Tests Leading Team.
  • Dexia Asset Management, Alternative Investment - IT project manager
  • Société Générale / Gaselys, Commodities - Software Engineer
Education:
  • MBA, Paris I Panthéon La Sorbonne (IAE Paris)
  • MSc in Computer Science, EPMI engineering school
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A need to understand a global economic context

The financial globalization and the growing interconnections between the economic actors have deeply affected the nature of financial risks. A high leverage effect and a strong mimetism in the actors' investment decisions cause bubbles and coincident crashes in all markets, from stocks and forex to bonds and commodities.

Understand and overcome the weaknesses of the traditionnal models

The usual risk measures are adapted to 'normal' market modes but they systematically underestimate the magnitude of losses occurring in periods of generalized stress, where the interactions between markets and players amplify the moves.

Investors and companies are not doomed to suffer these huge losses. Riskelia has developped a set of innovative operational indicators which dynamically detect these 'chaotic' market phases and enable to avoid the harmful losses that they usually imply.

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    Decoding

    Our tools are designed to characterize the behaviors of actors in financial markets in order to anticipate potential wildness in financial asset prices.

    Pragmatism

    We advocate a different view of extreme market risks, giving a more central role to behavioral and economic insights at the expense of purely statistical approaches, commonly used to quantify potential losses.

    A global, cross-markets view

    We analyze all liquidly traded assets in the world and take into account the complex network of inter-markets connections.