A new era for systematic investing.

Walnut Investments is a quantitative investment management company applying artificial intelligence to absolute return strategies. We combine advanced machine learning techniques with financial expertise to generate profitable, self-learning trading systems.

How we build our trading technology.

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Machine learning

We use machine learning for fast, accurate, and continuous learning of vast amounts of data while avoiding rigid rules. Key for finance, it also provides a powerful formalism to measure and control statistical robustness and overfitting.



Quantitative investing means operating at the opposite of randomness – it bans gut-feels and discretionary decision making. It seeks to maximise statistical significance by rigorously applying mathematics rooted in market rationale, consistently.

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Diversification is only one measure to reduce risk. In times of crisis everything tends to correlate. We believe risk management must be achieved with careful designs, robust market signals, protected positions, and controlled levels of exposure.

Our team.

Our systems result from an intense collaboration among a diverse, highly-specialised group of scientists and researchers from the fields of artificial intelligence, mathematics, quantitative trading, and computer science.

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Adrien Fischman

Machine learning researcher, Adrien holds master's degrees in machine learning from Université Grenoble Alpes and in mathematics and computer science from ENSIMAG.


Adrien Pain

Quant researcher, Adrien was formerly quant at OptimInvest as well as Overlay Asset Management (BNP Paribas). He was previously R&D engineer at Eurodecision. Adrien holds master's degrees in artificial intelligence from EPITA and in mathematics from Université Paris Dauphine.


Andrew Mittleider

Software engineer, Andrew was previously at Microsoft. He holds a master's degree in computer science from University of Nebraska-Lincoln.


Basile Mayeur

Overseeing Walnut's research efforts, Basile was previously PhD candidate in deep reinforcement learning at Université Paris-Sud (CNRS-INRIA). He holds master's degrees in machine learning from Université Paris-Sud and in mathematics and computer science from ENSIMAG.


Benjamin Le Maitre

Business associate, Benjamin is specialised in financial engineering and alternative investments. He holds a master's degree in finance from ESSCA Business School and the Chartered Alternative Investment Analyst (CAIA) designation.


Carl Levasseur

Software engineer, Carl holds a master's degree in data mining and analytics for decision making from UTC as well as a BSc in computer science from Université des Sciences et Technologies de Lille.


Colombe De Milly

Machine learning researcher, Colombe was previously data scientist at Criteo. She holds master's degrees in engineering from Centrale-Supélec and in mathematical modelling and scientific computing from the University of Oxford.


Damien Mourot

Responsible for software engineering, Damien was previously an R&D engineer at Misys Sophis (now Finastra). He holds a master's degree in applied mathematics and computer science from ENSIMAG.


Estelle Campos

In charge of people operations, Estelle was previously at Leroy Merlin, Jumia, and Deezer. She holds a master's degree in international human resources management from ESC Rennes.


Guillaume Vidal

CEO at Walnut, Guillaume was previously a private equity professional at Keyhaven Capital Partners in London. He holds master's degrees in computer science from Imperial College London, and in finance from the London School of Economics.


Kevin Lourd

Kevin was previously associate consultant with Bain & Company. He holds master's degrees in business administration and strategy from ESSEC Business School, and in applied mathematics and computer science from ENSIMAG .


Laurent Nguyen

Software engineer, Laurent was previously a contractor to SGCIB, Natixis and Engie Global Markets. He holds master's degrees in applied mathematics and computer science from ENSIMAG and in quantitative finance from IAE Grenoble.


Martin Mihelich

Mathematics researcher at Walnut and lecturer in mathematics (classes préparatoires), Martin is agrégé in mathematics. He also holds a PhD in mathematics and theoretical physics as well as a master's degree in mathematics, both from Ecole Normale Supérieure (Ulm).


Michaël Blot

Machine learning researcher at Walnut, Michaël holds a PhD in deep learning at UPMC. Previously quantitative researcher at BNP Paribas, he holds master's degrees in mathematical logic from Université Paris Diderot, in quantitative finance from IAE Grenoble, and mathematics and computer science from ENSIMAG.


Robin Monnier

Machine learning researcher, Robin holds master's degrees in data science from Ecole Polytechnique and mathematics and computer science from Ecole des Ponts ParisTech.


Tristan Marechaux

Software engineer, Tristan holds a master's degree in mathematics and computer science from ENSIMAG.


Yan Shu

Mathematics researcher, Yan holds a PhD in mathematics from Paris-Nanterre and a master's degree in mathematics from Ecole Normale Supérieure (Lyon).


Sébastien Gaspar

Software Engineer at Walnut, Sébastien was previously Software Engineer at Criteo, Natixis, Invivoo and Crédit Agricole CIB. He holds a master's degree in computer science from ENSEA.


Maxime Gauthier

Software Engineer at Walnut, Maxime was previously Software Engineer at Société Générale and Natixis. He holds a master's degree in mathematics and computer science from ENSIMAG.

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Laurent Repiton

Quant researcher at Walnut, Laurent was formerly front office software engineer at Capital Fund Management (CFM) in Paris, where he spent over 7 years. He was previously quant trader at Arbitragis Trading. Laurent holds master's degrees in applied mathematics and computer science from ENSIMAG and in quantitative finance from IAE Grenoble.

Our Advisors.


Manoj Narang

CEO and Chief Investment Strategist at Mana Partners.

Manoj is a world renowned expert in quantitative trading. He founded and was Chief Investment Strategist at Tradeworx. He was formerly a Proprietary Trader at Goldman Sachs and a Senior Investment Technologist with Citicorp, CS First Boston and Lehman Brothers. Manoj is a graduate of MIT.

Christophe Mianné

Christophe Mianné

CEO at La Financière de l'Echiquier, Deputy CEO of Primonial.

Christophe was previously Deputy CEO of Société Générale CIB, where he spent nearly 30 years. He is one of the founders of Lyxor of which he was President of the Supervisory Board. Christophe is a graduate of Ecole Centrale de Paris.

Pierre Sermanet

Pierre Sermanet

Researcher in Deep Learning at Google Brain.

Pierre is a renowned expert in Deep Learning, Vision and Robotics. Prior to joining Google, Pierre received a PhD from New York University under the supervision of Prof. Yann LeCun. He won three ImageNet competitions in 2013 and 2014 in image recognition.

Guillaume Amblard

Guillaume Amblard

CEO at Amblard Ventures.

Guillaume is an active investor and advisor in start-ups in Digital technology and Artificial Intelligence applied to FinTech. Until 2015, he worked for twenty-five years at BNPP notably as global head of Fixed Income trading and quant and electronic research. Guillaume received a BS in Electrical Engineering and Computer Science and an MS in Operations Research both from MIT.


“Walnut joins a small group of hedge funds that use artificial intelligence to trade.”

Becky Pritchard, 31 January 2017.

“Walnut was designed from the beginning to work on AI.“

Spencer Platt, 26 February 2017.

“The underlying algo itself understands that the market has changed and gives us higher or lower confidence on its signal.“

Guillaume Vidal, Dataconomy interview, 5 April 2017.

Walnut Investments SASU is a French portfolio management company regulated by the Autorité des Marchés Financiers (AMF) under number GP-18000021 with a share capital of 1 010 000€.

The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Walnut.

In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Walnut nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security 
Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or 
other investor, contact your financial advisor or other fiduciary unrelated to Walnut about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Walnut makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. As Walnut Algorithms is fully dedicated to this sole project, its team as been presented in this website along with the Walnut Investments team.