‘The two quantifications of financial theory: a toy model’ by Christian Walter

I present without mathematical complexity a toy model of the well-known and celebrated Efficient Market Hypothesis (EMH). This toy EMH-model aims to illuminate the correspondences between the multiple representations of EMH-models with a focus on the two main mathematical frameworks of EMH: the mean-variance universe of Markowitz (1952) under the “real world” probability P and the martingale pricing universe of Harrison and Kreps (1979) […]

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Agent-based modeling: a paradigm shifting in finance and economics? by
Annalisa Fabretti

Finance and economy are complex systems where many entities with different properties and roles interact continuously. The competitive equilibrium, developed by Arrow and Debreu in 1951, has been, to this day, the fundamental paradigm under which economists work. The traditional approach uses analytically tractable models with a representative perfectly rational agent, usually a profit maximizer. […]

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Phinance Biennial Conference 2022

Philosophy & Finance Network – Biennial Conference 8-9 September 2022 Room II, Villa Mirafiori – Dept. Philosophy – Sapienza University of Rome Via Carlo Fea, 2 Open to the public Paolo Barucca (UCL)Boudewijn De Bruin (Groningen)Francesco Guala (Milano Statale)Emiliano Ippoliti (Sapienza)Taylor Spears (Edinburgh)Ekaterina Svetlova (Twente)Melissa Vergara-Fernandez (Erasmus University Rotterdam)Roberto Violi (Bank of Italy)Christian Walter (Paris, MSH) Organization and infoEmiliano […]

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‘When models become market infrastructure’ by Taylor Spears

When mathematical models are adopted into new fields, actors within those fields tend to modify them in order to ensure their fit with local practices and infrastructures through a process of ‘translation’. The translation of specific models has been studied, but we know little about how the translation of models into field-specific infrastructures shapes subsequent […]

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Cinema, Finance & Society
The Afterlives of Finance Film in the Digital Public Sphere by Constantin Parvulescu

“Once upon a time Wall Street became a favorite subject for Hollywood. After the 2007-2008 crisis, both fiction and documentary films in the US and Europe explored finance with high interest. They earned Oscars, festival awards, and critical acclaim. Their content impacted the public sphere and created a valuable archive for understanding global finance.However, as […]

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Financial markets: are they epistemically efficient? by Lisa H. Herzog

The Efficient Market Hypothesis popularized the picture according to which financial markets are real-time mirrors of the economy. They are automatically epistemically efficient because all epistemic inefficiencies would be removed by savvy arbitrageurs by incorporating all publicly available knowledge. This would justify the financial market’s central role in economic and public life.Lisa argues against this […]

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