Marc Lenglet
Biographic Data
| ID | 130212 |
|---|---|
| NAME | Marc Lenglet |
| GIVEN NAMES | Marc |
| FAMILY NAME | Lenglet |
| SIGNATURE | LENGLET M |
| AFFILIATIONS | NEOMA Business School |
| ORCID | 0000-0002-7267-9425 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 33 |
| AUTHOR COUNT | 20 |
| EDITOR COUNT | 2 |
| FIRST PUBLICATION YEAR | 2006 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 4 |
Making up with parrots: A critical praise of machine learning agency
This paper aims to contribute to the reconciliation between radical critiques and endorsements of machine learning's capacity to act, intervene, and produce social effects (i.e., its agency). Building upon recent ethnographic studies of the mundane shaping of algorithmic systems, the paper begins by underlining three positive attributes of machine learning agency: “experience” (the ability to embody insights derived from referential datasets), “c…
Pour une apologie critique de l’agentivité algorithmique: Une perspective bergsonienne
Cet article propose une apologie critique de l’agentivité algorithmique, dans un effort diplomatique de réconciliation entre sciences informatiques et approches critiques des algorithmes. En nous appuyant sur les résultats d’ethnographies récentes portant sur la construction d’algorithmes, nous mettons en lumière deux capacités de l’intelligence propre à l’agentivité algorithmique : la capacité de concentration (un effort méthodique vers la préci…
How to undo things with words? Explication and the counterperformative effects of regulation
Policymakers implement regulations with limited capacity to register the unexpected. We argue that unexpected events do occur when regulations are implemented and we develop the concept of explication to account for the performative misfires that generate them. Explication is the organisational process that allows abstract ideas to be transposed into material realities and it allows us to identify how regulatory texts can carry signs and intentio…
High-frequency trading, spoofing and conflicting epistemic regimes: Accounting for market abuse in the age of algorithms
Parasitic universes: Organisational and technological meddling in the social
Debates about technology theorising ‘the social’ solely on dyadic and fixed positional terms fail to grasp important ways that new financial technologies participate in work organisations. As an alternative, we build on the work of Michel Serres to propose that these technologies already inhabit triadic and relational parasitic universes in which they introduce interruptions that do much more than mediate between degrees of technological and soci…
Florian Jaton, The Constitution of Algorithms. Ground-Truthing, Programming, Formulating: Cambridge, MS: The MIT Press, coll. « Inside Technology », 2020
Les algorithmes ont depuis longtemps quitté le domaine des mathématiques et des sciences de l’information pour s’imposer sur la scène de nos interactions quotidiennes. Sans nécessairement comprendre leur fonctionnement, ni posséder de représentation claire de ce qu’ils sont et font, ni même toujours soupçonner leurs fragilités intrinsèques, force est de constater que nous nous sommes peu à peu habituées à l’évocation répétée de leur présence. Qua…
Imaginary failure: RegTech in finance
The notion of ‘RegTech’ has become a buzzword for applications of emergent technologies to regulatory activities. This paper contextualises and interrogates the novelty of the RegTech phenomenon as expounded in recent years by industry practitioners, regulators and a growing chorus of scholars. Harnessing the notion of ‘imaginary’ from Science and Technology Studies, we identify a particular solutionist vision materialising across public document…
Global Regulations for a Digital Economy: Between New and Old Challenges
Digital technologies are often described as posing unique challenges for public regulators worldwide. Their fast‐pace and technical nature are viewed as being incompatible with the relatively slow and territorially bounded public regulatory processes. In this paper, we argue that not all digital technologies pose the same challenges for public regulators. We more precisely maintain that the digital technologies’ label can be quite misleading as i…
Between concepts and thought: Digital Technologies and Temporal Relationality
This article advances the argument that the acceleration of practices introduced by digital technologies also impact key concepts of social theory. Digital technologies not only give rise to new concepts, but they also reconfigure our entire socio-political conceptual vocabulary. In particular, this acceleration reorganises the relationship between the spatial and temporal dimensions of political concepts. As a consequence, our spatially defined …
The dark side of liquidity: Shedding Light on Dark Pools' Marketing and Market-Making
In this article, we explore the case of dark pools of liquidity, which are trading venues that do not display order books and other trading-related data. We argue that, in a context where liquidity remains essentially invisible, dark-pool providers use visual advertisements that iconically represent liquid markets. In so doing, they defuse the idea that dark liquidity is harmful to market efficiency and fair pricing. We use Barthesian and Greimas…
On studying algorithms ethnographically: Making sense of objects of ignorance
In this article, we make sense of financial algorithms as new objects of concern for organizational ethnography. We conceive of algorithms as ‘objects of ignorance’ jeopardizing traditional ethnography from the perspective of its categories and methods. We investigate the organizational politics taking place within high-frequency trading – a sub-field of algorithmic trading where automated decision-making without human direction has reached a pea…
The Making of Finance: Perspectives from the Social Sciences
Capítulos en libros
Horacio Ortiz, Valeur financière et vérité. Enquête d’anthropologie politique sur l’évaluation des entreprises cotées en bourse: Les Presses de Sciences Po, Paris, 2014, 184 p
Horacio Ortiz propose dans cet ouvrage une enquête sur l’évaluation financière. Prenant appui sur des observations participantes effectuées dans deux entreprises distinctes, il donne accès aux pratiques des intermédiaires financiers en charge de l’évaluation des entreprises cotées en bourse. Les sources primaires ont tout d’abord été collectées dans une société de courtage (Brokers Inc., New York, 2002), dont l’activité consiste à vendre de l’ana…
Abstract Market Theory, by Jon Roffe
Jon Roffe’s book appears as a hapax: It is one very unique attempt at providing a philosophical answer to the formidable question, ‘What is (the) market?’ An exigent read, Abstract Market Theory re
La fabrique de la finance: Pour une approche interdisciplinaire
Mobilisant une variété de cadres théoriques issus des sciences sociales, les auteurs, membres de l'Association des Études Sociales de la Finance, font le point sur quinze années de recherches interdisciplinaires. Ils proposent une perspective critique des représentations portées par le paradigme dominant de la finance contemporaine, en les confrontant aux réalités financières. À travers une étude fine de ses instruments, du fonctionnement de ses …
Cultures of high-frequency trading: Mapping the Landscape of Algorithmic Developments in Contemporary Financial Markets
As part of ongoing work to lay a foundation for social studies of high-frequency trading (HFT), this paper introduces the culture(s) of HFT as a sociological problem relating to knowledge and practice. HFT is often discussed as a purely technological development, where all that matters is the speed of allocating, processing and transmitting data. Indeed, the speed at which trades are executed and data transmitted is accelerating, and it is fair t…
Squaring the speed of light? Regulating market access in algorithmic finance
We examine the sociomaterial regulation of algorithmic trading against the background of the European Union's directives on Markets in Financial Instruments (MiFID/MiFIR). Tracing the purification and translation of regulatory practices within a French brokerage firm, we examine the impact of electronic trading on the nature of market access. Central to our analysis is the 'Blackbox', a tool designed to manage market access efficiently by collati…
Ambivalence and Ambiguity
Alain Loute, La création sociale des normes. De la socio-économie des conventions à la philosophie de l'action de Paul Ricoeur
Cet ouvrage, issu d'une thèse de doctorat en philosophie, entend travailler le thème de la production collective des normes. Plus spécifiquement, l'auteur cherche à mettre en lumière les modalités selon lesquelles les acteurs parviennent (ou pas) à prendre part au processus de création et d'innovation normative. L'ouvrage, de facture très claire, s'organise en deux parties. La première propose un parcours critique des théories conventionnalistes,…
Bruno Latour, Sur le culte des dieux faitiches. Suivi de Iconoclash
Il faut saluer la salvatrice réédition de ces deux textes de Bruno Latour, qui étaient devenus difficiles d'accès : le premier étant épuisé, et le second resté inédit en français. Tous deux contribuent, chacun à leur façon, à affirmer la démarche proposée par l'auteur au fil de ses publications, depuis au moins La science en action ([1987], tr. fr. 1989), jusqu'à Changer de société, refaire de la sociologie (2005), en passant par Nous n'avons jam…
Isabelle Stengers, Au temps des catastrophes. Résister à la barbarie qui vient
L'essai propose par Isabelle Stengers reprend et approfondit certaines des idees exposees quelques annees auparavant aux cotes de Philippe Pignarre, dans La sorcellerie capitaliste. L'ouvrage se veut une critique en regle contre la surdite contemporaine manifestee a l'egard de ce qui nous environne, et qui s'impose desormais dans nos quotidiens d'etres humains et de citoyens sous les traits de « l'intrusion Gaia » (p. 48), ainsi nommee en referen…
Albert Piette, Petit traité d?anthropologie
L'ouvrage proposé par Albert Piette est original à plus d'un titre. De facture courte, il se présente comme un essai classique, et se donne pour objectif de souligner les spécificités propres à une anthropologie possible, soucieuse d'une double question : celle des origines, celle du réel. Cette dualité constitutive, matérialisée par l'exposé d'une passion ouvertement déclarée dans les premières pages, amène l'auteur à opérer une mise en perspect…
Cultures of high-frequency trading: Mapping the Landscape of Algorithmic Developments in Contemporary Financial Markets
As part of ongoing work to lay a foundation for social studies of high-frequency trading (HFT), this paper introduces the culture(s) of HFT as a sociological problem relating to knowledge and practice. HFT is often discussed as a purely technological development, where all that matters is the speed of allocating, processing and transmitting data. Indeed, the speed at which trades are executed and data transmitted is accelerating, and it is fair t…
Squaring the speed of light? Regulating market access in algorithmic finance
We examine the sociomaterial regulation of algorithmic trading against the background of the European Union's directives on Markets in Financial Instruments (MiFID/MiFIR). Tracing the purification and translation of regulatory practices within a French brokerage firm, we examine the impact of electronic trading on the nature of market access. Central to our analysis is the 'Blackbox', a tool designed to manage market access efficiently by collati…
Imaginary failure: RegTech in finance
The notion of ‘RegTech’ has become a buzzword for applications of emergent technologies to regulatory activities. This paper contextualises and interrogates the novelty of the RegTech phenomenon as expounded in recent years by industry practitioners, regulators and a growing chorus of scholars. Harnessing the notion of ‘imaginary’ from Science and Technology Studies, we identify a particular solutionist vision materialising across public document…
The dark side of liquidity: Shedding Light on Dark Pools' Marketing and Market-Making
In this article, we explore the case of dark pools of liquidity, which are trading venues that do not display order books and other trading-related data. We argue that, in a context where liquidity remains essentially invisible, dark-pool providers use visual advertisements that iconically represent liquid markets. In so doing, they defuse the idea that dark liquidity is harmful to market efficiency and fair pricing. We use Barthesian and Greimas…
High-frequency trading, spoofing and conflicting epistemic regimes: Accounting for market abuse in the age of algorithms
Between concepts and thought: Digital Technologies and Temporal Relationality
This article advances the argument that the acceleration of practices introduced by digital technologies also impact key concepts of social theory. Digital technologies not only give rise to new concepts, but they also reconfigure our entire socio-political conceptual vocabulary. In particular, this acceleration reorganises the relationship between the spatial and temporal dimensions of political concepts. As a consequence, our spatially defined …
Albert Piette, Petit traité d?anthropologie
L'ouvrage proposé par Albert Piette est original à plus d'un titre. De facture courte, il se présente comme un essai classique, et se donne pour objectif de souligner les spécificités propres à une anthropologie possible, soucieuse d'une double question : celle des origines, celle du réel. Cette dualité constitutive, matérialisée par l'exposé d'une passion ouvertement déclarée dans les premières pages, amène l'auteur à opérer une mise en perspect…
Isabelle Stengers, Au temps des catastrophes. Résister à la barbarie qui vient
L'essai propose par Isabelle Stengers reprend et approfondit certaines des idees exposees quelques annees auparavant aux cotes de Philippe Pignarre, dans La sorcellerie capitaliste. L'ouvrage se veut une critique en regle contre la surdite contemporaine manifestee a l'egard de ce qui nous environne, et qui s'impose desormais dans nos quotidiens d'etres humains et de citoyens sous les traits de « l'intrusion Gaia » (p. 48), ainsi nommee en referen…
Alain Loute, La création sociale des normes. De la socio-économie des conventions à la philosophie de l'action de Paul Ricoeur
Cet ouvrage, issu d'une thèse de doctorat en philosophie, entend travailler le thème de la production collective des normes. Plus spécifiquement, l'auteur cherche à mettre en lumière les modalités selon lesquelles les acteurs parviennent (ou pas) à prendre part au processus de création et d'innovation normative. L'ouvrage, de facture très claire, s'organise en deux parties. La première propose un parcours critique des théories conventionnalistes,…
Bruno Latour, Sur le culte des dieux faitiches. Suivi de Iconoclash
Il faut saluer la salvatrice réédition de ces deux textes de Bruno Latour, qui étaient devenus difficiles d'accès : le premier étant épuisé, et le second resté inédit en français. Tous deux contribuent, chacun à leur façon, à affirmer la démarche proposée par l'auteur au fil de ses publications, depuis au moins La science en action ([1987], tr. fr. 1989), jusqu'à Changer de société, refaire de la sociologie (2005), en passant par Nous n'avons jam…
Ambivalence and Ambiguity
La fabrique de la finance: Pour une approche interdisciplinaire
Mobilisant une variété de cadres théoriques issus des sciences sociales, les auteurs, membres de l'Association des Études Sociales de la Finance, font le point sur quinze années de recherches interdisciplinaires. Ils proposent une perspective critique des représentations portées par le paradigme dominant de la finance contemporaine, en les confrontant aux réalités financières. À travers une étude fine de ses instruments, du fonctionnement de ses …
Cultures of high-frequency trading: Mapping the Landscape of Algorithmic Developments in Contemporary Financial Markets
As part of ongoing work to lay a foundation for social studies of high-frequency trading (HFT), this paper introduces the culture(s) of HFT as a sociological problem relating to knowledge and practice. HFT is often discussed as a purely technological development, where all that matters is the speed of allocating, processing and transmitting data. Indeed, the speed at which trades are executed and data transmitted is accelerating, and it is fair t…
Squaring the speed of light? Regulating market access in algorithmic finance
We examine the sociomaterial regulation of algorithmic trading against the background of the European Union's directives on Markets in Financial Instruments (MiFID/MiFIR). Tracing the purification and translation of regulatory practices within a French brokerage firm, we examine the impact of electronic trading on the nature of market access. Central to our analysis is the 'Blackbox', a tool designed to manage market access efficiently by collati…
Abstract Market Theory, by Jon Roffe
Jon Roffe’s book appears as a hapax: It is one very unique attempt at providing a philosophical answer to the formidable question, ‘What is (the) market?’ An exigent read, Abstract Market Theory re
The Making of Finance: Perspectives from the Social Sciences
Capítulos en libros
Horacio Ortiz, Valeur financière et vérité. Enquête d’anthropologie politique sur l’évaluation des entreprises cotées en bourse: Les Presses de Sciences Po, Paris, 2014, 184 p
Horacio Ortiz propose dans cet ouvrage une enquête sur l’évaluation financière. Prenant appui sur des observations participantes effectuées dans deux entreprises distinctes, il donne accès aux pratiques des intermédiaires financiers en charge de l’évaluation des entreprises cotées en bourse. Les sources primaires ont tout d’abord été collectées dans une société de courtage (Brokers Inc., New York, 2002), dont l’activité consiste à vendre de l’ana…
On studying algorithms ethnographically: Making sense of objects of ignorance
In this article, we make sense of financial algorithms as new objects of concern for organizational ethnography. We conceive of algorithms as ‘objects of ignorance’ jeopardizing traditional ethnography from the perspective of its categories and methods. We investigate the organizational politics taking place within high-frequency trading – a sub-field of algorithmic trading where automated decision-making without human direction has reached a pea…
Global Regulations for a Digital Economy: Between New and Old Challenges
Digital technologies are often described as posing unique challenges for public regulators worldwide. Their fast‐pace and technical nature are viewed as being incompatible with the relatively slow and territorially bounded public regulatory processes. In this paper, we argue that not all digital technologies pose the same challenges for public regulators. We more precisely maintain that the digital technologies’ label can be quite misleading as i…
Between concepts and thought: Digital Technologies and Temporal Relationality
This article advances the argument that the acceleration of practices introduced by digital technologies also impact key concepts of social theory. Digital technologies not only give rise to new concepts, but they also reconfigure our entire socio-political conceptual vocabulary. In particular, this acceleration reorganises the relationship between the spatial and temporal dimensions of political concepts. As a consequence, our spatially defined …
The dark side of liquidity: Shedding Light on Dark Pools' Marketing and Market-Making
In this article, we explore the case of dark pools of liquidity, which are trading venues that do not display order books and other trading-related data. We argue that, in a context where liquidity remains essentially invisible, dark-pool providers use visual advertisements that iconically represent liquid markets. In so doing, they defuse the idea that dark liquidity is harmful to market efficiency and fair pricing. We use Barthesian and Greimas…
Florian Jaton, The Constitution of Algorithms. Ground-Truthing, Programming, Formulating: Cambridge, MS: The MIT Press, coll. « Inside Technology », 2020
Les algorithmes ont depuis longtemps quitté le domaine des mathématiques et des sciences de l’information pour s’imposer sur la scène de nos interactions quotidiennes. Sans nécessairement comprendre leur fonctionnement, ni posséder de représentation claire de ce qu’ils sont et font, ni même toujours soupçonner leurs fragilités intrinsèques, force est de constater que nous nous sommes peu à peu habituées à l’évocation répétée de leur présence. Qua…
Imaginary failure: RegTech in finance
The notion of ‘RegTech’ has become a buzzword for applications of emergent technologies to regulatory activities. This paper contextualises and interrogates the novelty of the RegTech phenomenon as expounded in recent years by industry practitioners, regulators and a growing chorus of scholars. Harnessing the notion of ‘imaginary’ from Science and Technology Studies, we identify a particular solutionist vision materialising across public document…
Parasitic universes: Organisational and technological meddling in the social
Debates about technology theorising ‘the social’ solely on dyadic and fixed positional terms fail to grasp important ways that new financial technologies participate in work organisations. As an alternative, we build on the work of Michel Serres to propose that these technologies already inhabit triadic and relational parasitic universes in which they introduce interruptions that do much more than mediate between degrees of technological and soci…
How to undo things with words? Explication and the counterperformative effects of regulation
Policymakers implement regulations with limited capacity to register the unexpected. We argue that unexpected events do occur when regulations are implemented and we develop the concept of explication to account for the performative misfires that generate them. Explication is the organisational process that allows abstract ideas to be transposed into material realities and it allows us to identify how regulatory texts can carry signs and intentio…
High-frequency trading, spoofing and conflicting epistemic regimes: Accounting for market abuse in the age of algorithms
Pour une apologie critique de l’agentivité algorithmique: Une perspective bergsonienne
Cet article propose une apologie critique de l’agentivité algorithmique, dans un effort diplomatique de réconciliation entre sciences informatiques et approches critiques des algorithmes. En nous appuyant sur les résultats d’ethnographies récentes portant sur la construction d’algorithmes, nous mettons en lumière deux capacités de l’intelligence propre à l’agentivité algorithmique : la capacité de concentration (un effort méthodique vers la préci…
Making up with parrots: A critical praise of machine learning agency
This paper aims to contribute to the reconciliation between radical critiques and endorsements of machine learning's capacity to act, intervene, and produce social effects (i.e., its agency). Building upon recent ethnographic studies of the mundane shaping of algorithmic systems, the paper begins by underlining three positive attributes of machine learning agency: “experience” (the ability to embody insights derived from referential datasets), “c…
Computer Science (9 works) · Sociology (9 works) · Economics (8 works) · Philosophy (7 works) · Political science (7 works) · Business (6 works) · Epistemology (5 works) · Finance (5 works) · Art (4 works) · Blockchain Technology Applications and Security (4 works)