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Christian Walter

Chercheur associé au Laboratoire d'anthropologie politique (LAP-LACI, UMR 8177 CNRS-EHESS)
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64
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  • 1144678
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Web site
  • https://epistemofinance.hypotheses.org/

Presentation

Christian Walter, ESSEC, actuary “agrégé” of the Institute of Actuaries, doctorate in Economics and “Habilitation à diriger des recherches” in Management Science. He specializes in financial markets related issues (mathematical, economic, philosophical and historical) with interplays between history of science, modern financial approaches of pricing and ethical perspectives. He had a 30 years’ experience in financial industry in various areas covering asset allocation, risk management, performance measurement and quantitative products. Main articles cover: in-depth analysis of the market efficiency concept, Lévy modelling for behaviour of stock market prices and asset pricing, history of financial thought, critical analysis of the financial mathematical concepts. Last book: *Extreme Financial Risks and Asset Allocation* (with Olivier Le Courtois), London, Imperial College Press, Series in Quantitative Finance, 2014.

Research domains


Skills

Publications

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La mesure de l’incertitude radicale en économie : un roman du hasard ?

Christian Walter
Revue Française d'Economie, 2024, XXXVIII (3), pp.3-30. ⟨10.3917/rfe.233.0003⟩
Journal articles hal-04560259v1
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L’introduction de la loi de Pareto dans la modélisation financière

Christian Walter
L'Année Sociologique, 2023, Vilfredo Pareto (1848-1923), 73 (1), pp.113-150. ⟨10.3917/anso.231.0113⟩
Journal articles halshs-04494659v1
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Dominique Casajus. Le hasard mode d’emploi. Divination, arithmétique et machines littéraires

Christian Walter
Journal articles halshs-04500117v1
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Sustainable Financial Risk Modelling Fitting the SDGs: Some Reflections

Christian Walter
Sustainability, 2020, 12 (18), pp.7789. ⟨10.3390/su12187789⟩
Journal articles halshs-04500146v1
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Regulation Risk

Olivier Le Courtois , Jacques Lévy-Véhel , Christian Walter
North American Actuarial Journal, 2020, 24 (3), pp.463-474. ⟨10.1080/10920277.2019.1679189⟩
Journal articles halshs-04500907v1
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L’enchâssement ou la quête de « Dieu » au-delà du langage

Christian Walter
Socio - La nouvelle revue des sciences sociales, 2019, 13, pp.181-197. ⟨10.4000/socio.7987⟩
Journal articles halshs-04503434v1
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The Brownian Motion in Finance: An Epistemological Puzzle

Christian Walter
Topoi, 2019, 40 (4), pp.1-17. ⟨10.1007/s11245-019-09660-7⟩
Journal articles halshs-04500953v1
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The Three Ages of Financial Quantification: A Conventionalist Approach to the Financiers’ Metrology

Eve Chiapello , Christian Walter
Historical Social Research / Historische Sozialforschung, 2016, Conventions and quantification in economy, politics and statistics - historical perspectives, 41 (2), pp.7-26. ⟨10.12759/hsr.41.2016.2.155-177⟩
Journal articles halshs-04503477v1
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La seconde quantification de la finance

Christian Walter
Cités : Philosophie, politique, Histoire, 2016, N° 64 (4), pp.53-64. ⟨10.3917/cite.064.0053⟩
Journal articles halshs-04504495v1
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The financial Logos : The framing of financial decision-making by mathematical modelling

Christian Walter
Research in International Business and Finance, 2016, 37, pp.597-604. ⟨10.1016/j.ribaf.2016.01.022⟩
Journal articles halshs-04503518v1
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Présentation

Gilles Campagnolo , Emmanuel Picavet , Christian Walter
Cités : Philosophie, politique, Histoire, 2016, 64 (4), pp.9-14. ⟨10.3917/cite.064.0009⟩
Journal articles hal-04515317v1
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Xavier Fontanet. Si on faisait confiance aux entrepreneurs : l’entreprise française et la mondialisation

Christian Walter
Revue de Philosophie Economique / Review of Economic Philosophy, 2015, 16 (1), pp.135-145. ⟨10.3917/rpec.161.0135⟩
Journal articles halshs-04504467v1
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The Computation of Risk Budgets under the Lévy Process Assumption

Olivier Le Courtois , Christian Walter
Finance, 2014, Vol. 35 (2), pp.87-108. ⟨10.3917/fina.352.0087⟩
Journal articles halshs-04506681v1
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Introduction

Christian Walter
Transversalités, 2012, N° 124 (4), pp.7-12. ⟨10.3917/trans.124.0007⟩
Journal articles hal-04515356v1
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Éthique et finance : le tournant performatif

Christian Walter
Transversalités, 2012, Éthique et Finance, 124, pp.29-42. ⟨10.3917/trans.124.0029⟩
Journal articles hal-04515340v1
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Concentration des portefeuilles boursiers et asymétrie des distributions de rentabilités d'actifs

Christian Walter , Olivier Le Courtois
Journal de la Société Française de Statistique, 2012, 153 (2), pp.1-20
Journal articles hal-04560285v1
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Performation et surveillance du système financier

Christian Walter
Revue d'économie financière, 2011, N° 101 (101), pp.105-116. ⟨10.3917/ecofi.101.0105⟩
Journal articles halshs-00611164v1
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Taming Large Events: Optimal Portfolio Theory for Strongly Fluctuating Assets

J. Bouchaud , D. Sornette , Christian Walter , J. Aguilar
International Journal of Theoretical and Applied Finance, 2011, 01 (01), pp.25-41. ⟨10.1142/S0219024998000035⟩
Journal articles hal-04566694v1
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Le sida de la finance

Christian Walter
Cités : Philosophie, politique, Histoire, 2010, n° 41 (41), pp.89-98. ⟨10.3917/cite.041.0089⟩
Journal articles halshs-00611220v1
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L'éthique de la finance après le virus brownien

Christian Walter
Fin. et bien commun, 2010, N o 36 (36), pp.10-20. ⟨10.3917/fbc.036.0010⟩
Journal articles halshs-00611222v1

Less can be more!

Hayette Gatfaoui , Christian Walter
Journal of Money Investment and Banking, 2009, Special Issue, n°9, pp. 61-79
Journal articles hal-00565493v1
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Le phénomène leptokurtique sur les marchés financiers

Christian Walter
Finance, 2009, 23 (2), pp.15-68
Journal articles hal-04530006v1
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La représentation brownienne du risque : une faute morale collective ?

Christian Walter
Finance et bien commun, 2009, N o 31-32 (31-32), pp.137-144. ⟨10.3917/fbc.031.0137⟩
Journal articles halshs-00611225v1
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Le virus brownien. La réduction brownienne de l'incertitude et la crise financière de 2007-2008

Christian Walter
Communio, 2009, L'Action sociale de l'Eglise, 203, pp.107-120
Journal articles halshs-00611224v1
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Less Can Be More!

Hayette Gatfoui , Christian Walter
Journal of Money, Investment and Banking, 2007, 9, pp.59-77
Journal articles hal-04515402v1
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Les martingales sur les marchés financiers. Une convention stochastique ?

Christian Walter
Revue de Synthèse, 2006, 127 (2), pp.379-391. ⟨10.1007/BF02972107⟩
Journal articles halshs-00611227v1
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Les quatre causes de l'efficacité informationnelle des marchés

Christian Walter
Finance et bien commun, 2006, 23, pp.107-115
Journal articles halshs-00611228v1
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La gestion indicielle et la théorie des moyennes

Christian Walter
Revue d'économie financière, 2005, 79 (2), pp.113-136. ⟨10.3406/ecofi.2005.3974⟩
Journal articles hal-04529992v1
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Volatilité boursière excessive : irrationalité des comportements ou clivage des esprits ?

Christian Walter
Revue d'économie financière, 2004, 74 (1), pp.85-104. ⟨10.3406/ecofi.2004.5033⟩
Journal articles hal-04529998v1
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Les échelles de temps sur les marchés financiers

Christian Walter
Revue de synthèse, 2001, 122 (1), pp.55-69. ⟨10.1007/BF02990501⟩
Journal articles hal-04530012v1

CAPM, Risk and Portfolio Selection in "alpha-Stable Markets"

Lotfi Belkacem , Jacques Lévy-Vehel , Christian Walter
Fractals, 2000, 8 (1), pp.99-116. ⟨10.1142/S0218348X00000111⟩
Journal articles inria-00599259v1
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Aux origines de la mesure de performance des fonds d’investissement. Les travaux d’Alfred Cowles

Christian Walter
Histoire & Mesure, 1999, 14 (1), pp.163-197. ⟨10.3406/hism.1999.1506⟩
Journal articles hal-04560304v1
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Une histoire du concept d'efficience sur les marchés financiers

Christian Walter
Annales. Histoire, Sciences sociales, 1996, 51 (4), pp.873-905. ⟨10.3406/ahess.1996.410892⟩
Journal articles hal-04560336v1

The incorporation of Pareto’s Law into financial modelling: the 1962 turn

Christian Walter
50th Annual Meeting of the History of Economics Society, History of Economics Society, Jun 2023, Vancouver, Canada
Conference papers hal-04495590v1
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Performance Concentration

Christian Walter
AFIR-ERM (Financial Risks and ERM) 2005 Colloquium, International Actuarial Association, Sep 2005, Zurich (CH), Switzerland
Conference papers hal-04567931v1
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The Efficient Market Hypothesis, the Gaussian Assumption, and the Investment Management Industry

Christian Walter
European Financial Management Association (EFMA) Annual Meeting, European Financial Management Association, Jun 2001, Lugano, Switzerland
Conference papers hal-04574614v1
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Searching for scaling laws in distributional properties of price variations: a review over 40 years

Christian Walter
AFIR-ERM (Financial Risks and ERM) 2001 Colloquium, International Actuarial Association, Sep 2001, Toronto ( CA ), Canada
Conference papers hal-04567942v1
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Generalized Market Equilibrium: "Stable" CAPM

Lotfi Belkacem , Jacques Lévy Véhel , Christian Walter
AFFI - International Conference of Finance, Jun 1995, Bordeaux, France
Conference papers inria-00592310v1
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Limitations of conventional private green finance industry and strategies

Christian Walter , Christophe Revelli
Johannes Jäger; Ewa Dziwok. Understanding Green Finance. A Critical Assessment and Alternative Perspectives, Edward Elgar Publishing, pp.46-57, 2024, Economics_2024, 978 1 80392 754 1. ⟨10.4337/9781803927558.00011⟩
Book sections hal-04566302v1
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Le jeu avec le « je » : un point aveugle des sciences de gestion ?

Christian Walter
Un regard critique sur la gestion avec l'œil de Georges Bataille, EMS Editions, 2023, 978-2-37687-764-6. ⟨10.3917/ems.demar.2023.01.0243⟩
Book sections halshs-04534970v1
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Financial Black Swans: Unpredictable Threat or Descriptive Illusion?

Christian Walter
Denise Jodelet; Jorge Vala; Ewa Drozda-Senkowska. Societies Under Threat. A Pluri-Disciplinary Approach, 3, Springer International Publishing, pp.173-186, 2020, Frontiers in Sociology and Social Research, 978-3-030-39317-5. ⟨10.1007/978-3-030-39315-1_14⟩
Book sections hal-04560368v1
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The leptokurtic crisis and the discontinuous turn in financial modelling

Christian Walter
Isabelle Chambost; Marc Lenglet; Yamina Tadjeddine. The Making of Finance. Perspectives from the Social Sciences, Routledge, 2018, 9781351016117. ⟨10.4324/9781351016117-10⟩
Book sections hal-04560385v1
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Philosophie de la finance : l’exemple de l’efficacité informationnelle d’un marché

Christian Walter
Gilles Campagnolo; Jean-Sébastien Gharbi. Philosophie économique. Un état des lieux, Éditions Matériologiques, pp.579-626, 2017, E-conomiques, 9782373610574. ⟨10.3917/edmat.campa.2017.01.0579⟩
Book sections hal-04560395v1
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Research Habits in Financial Modelling: The Case of Non-normality of Market Returns in the 1970s and the 1980s

Boudewijn de Bruin , Christian Walter
Methods and Finance. Studies in Applied Philosophy, Epistemology and Rational Ethics, 34, Springer International Publishing, pp.73-93, 2017, Studies in Applied Philosophy, Epistemology and Rational Ethics, 978-3-319-49871-3. ⟨10.1007/978-3-319-49872-0_5⟩
Book sections hal-04561125v1
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The Extreme Value Problem in Finance: Comparing the Pragmatic Program with the Mandelbrot Program

Christian Walter
François Longin. Extreme Events in Finance: A Handbook of Extreme Value Theory and its Applications, 1, John Wiley and Sons, 2016, 9781118650196. ⟨10.1002/9781118650318.ch3⟩
Book sections hal-04561141v1
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Lévy Processes and Extreme Value Theory

Christian Walter , Olivier Le Courtois
François Longin. Extreme Events in Finance: A Handbook of Extreme Value Theory and its Applications, 1, John Wiley and Sons, 2016, 9781118650196. ⟨10.1002/9781118650318.ch8⟩
Book sections hal-04561146v1
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Benoit Mandelbrot in finance

Christian Walter
Michael Frame (Editor), Nathan Cohen (Editor). Benoit Mandelbrot. A Life in Many Dimensions, 1, WORLD SCIENTIFIC, pp.459-469, 2015, Fractals and Dynamics in Mathematics, Science, and the Arts: Theory and Applications, ⟨10.1142/9789814366076_0021⟩
Book sections hal-04566914v1
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Le phénomène leptokurtique

Christian Walter
Christian Walter. Nouvelles normes financières. S'organiser face à la crise, Springer Paris, pp.59-77, 2010, 978-2-8178-0069-1. ⟨10.1007/978-2-8178-0070-7_4⟩
Book sections hal-04568199v1
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IAS 39 et la martingalisation des marchés financiers

Christian Walter
Christian Walter. Nouvelles normes financières. S'organiser face à la crise, Springer Paris, pp.97-123, 2010, 978-2-8178-0069-1. ⟨10.1007/978-2-8178-0070-7_6⟩
Book sections hal-04568198v1

Le virus brownien et la déroute des professionnels en finance

Christian Walter
Repenser la planète finance, Eyrolles, pp.89-101, 2009
Book sections halshs-00611137v1
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La dictature des valeurs extrêmes

Christian Walter
Histoire des nombres, Tallandier, pp.237-245, 2007, 9782847344226
Book sections halshs-00611139v1
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La spéculation boursière dans un monde non gaussien

Christian Walter
Marcel Drach. L'argent. Croyance, mesure, spéculation, La Découverte, pp.147-165, 2004, 9782707143129. ⟨10.3917/dec.drach.2004.01.0147⟩
Book sections hal-04567518v1