Abstract

http://ssrn.com/abstract=1616043
 
 

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Conflicting Codes and Codings: How Algorithmic Trading Is Reshaping Financial Regulation


Marc Lenglet


IREBS - European Business School Paris

May 1, 2010


Abstract:     
Contemporary financial markets have recently witnessed a sea change with the ‘algorithmic revolution’, as trading automats are used to smoothen the execution sequences and reduce market impact. Constantly monitored, they take an active part in the shaping of markets, and sometimes generate crises, when ‘they mess up’ or when ‘they do not want to work’, as traders say. Made of scripts (IT code), algorithms are designed to replicate trading patterns: to be accepted, they have to ‘behave’ according to different sets of texts (regulatory texts framing the marketplace). In this article, we draw on ethnographic fieldwork in order to describe algorithms and discuss the different facets of these widespread objects. We return a controversy articulating around the detachment of trading practices from traders, and its reattachment into a specific financial object. We then raise a few questions relating with the framing of practices: what does this shift in the organisation of trading activities generate on the daily routines taking place in trading rooms? Is it possible to make codes (algorithms) comply with codings (rulebooks and codes of conduct)? How does such ‘equipment’ matter to the marketplaces, and what exactly does it imply for the development of future regulation in the market space?

Number of Pages in PDF File: 34

Keywords: : Algorithmic trading, codes, financial markets, practices, regulation

JEL Classification: G19, G24, G28, K23, L22

working papers series


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Date posted: May 27, 2010 ; Last revised: May 23, 2012

Suggested Citation

Lenglet, Marc, Conflicting Codes and Codings: How Algorithmic Trading Is Reshaping Financial Regulation (May 1, 2010). Available at SSRN: http://ssrn.com/abstract=1616043 or http://dx.doi.org/10.2139/ssrn.1616043

Contact Information

Marc Lenglet (Contact Author)
IREBS - European Business School Paris ( email )
37/39 Boulevard Murat
Paris, 75016
France
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