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Mathias M. Siems

Research Associate


Law and finance; corporate governance; financial market regulation.

Personal background

Mathias Siems is Professor of Private Law and Market Regulation at the European University Institute (EUI) in Florence, Italy. He is on special leave from his position as Professor of Commercial Law at Durham University. Previously, he was a professor at the University of East Anglia, a reader at the University of Edinburgh, an associate professor at the Riga Graduate School of Law, a Fulbright Scholar at Harvard Law School, and a Jean Monnet Fellow at the EUI. He is a graduate of the Universities of Munich and Edinburgh.

Selected publications

Siems, M., Schnyder, G. and Aguilera, R., (2019) “Twenty Years of ‘Law and Finance’: What Concept of Law?”, Socio-Economic Review,

Siems M., Deakin, S. and Sarkar P., (2018) “Is There a Relationship Between Shareholder Protection and Stock Market Development?”, Journal of Law, Finance, and Accounting, 3: 115-146.

Siems M., Ahiabor, F.S., James, G.A. and Kwabi, F.O. (2018) “Shareholder Protection, Stock Markets and Cross-Border Mergers”, Economics Letters, 171: 54-57.

Siems M., Chen, D., Deakin, S. and Wang, B., (2017) “Law, Trust and Institutional Change in China: Evidence from Qualitative Fieldwork”, Journal of Corporate Law Studies, 17: 257-290.

Siems M. and Alvarez-Macotela, O., (2017) “The G20/OECD Principles of Corporate Governance 2015: A Critical Assessment of their Operation and Impact”, 2017: 310-328.

Siems M. (2016) “Varieties of Legal Systems: Towards a New Global Taxonomy”, Journal of Institutional Economics, 12: 579-602.

Siems M. and Katelouzou, D., (2015) “Disappearing Paradigms in Shareholder Protection: Leximetric Evidence for 30 Countries, 1990-2013”, Journal of Corporate Law Studies, 15: 127-160.

Siems M. and Schnyder, G., (2014) “Ordoliberal Lessons for Economic Stability: Different Kinds of Regulation, Not More Regulation”, Governance: An international Journal of Policy, Administration and Institutions, 27: 377-396.

Siems M. and De Cesari, A., (2012) “The Law and Finance of Share Repurchases in Europe”, Journal of Corporate Law Studies, 12: 33-57.

Siems M. (2010) “The Web of Creditor and Shareholder Protection: A Comparative Legal Network Analysis”, Arizona Journal of International and Comparative Law, 27: 747-784.

Siems M. and Schouten, M., (2010) “The Evolution of Ownership Disclosure Rules Across Countries”, Journal of Corporate Law Studies, 33: 451-483.

Siems M., (2010) “Convergence in Corporate Governance: A Leximetric Approach”, The Journal of Corporation Law, 35: 729-756.

Siems M. and Deakin, S., (2010) “Comparative Law and Finance: Past, Present and Future Research”, Journal of Institutional and Theoretical Economics, 166: 120-140.

Siems M. and Armour, J., Deakin, S. and Lele, P., (2009) “How Do Legal Rules Evolve? Evidence From a Cross-country Comparison of Shareholder, Creditor and Worker Protection” American Journal of Comparative Law, 57: 579-630.

Siems M., Armour, J., Deakin, S., Sarkar, P. and Singh, A., (2009) “Shareholder Protection and Stock Market Development: An Empirical Test of the Legal Origins hypothesis” Journal of Empirical Legal Studies, 6: 343-380.

Siems, M. (2008) “Convergence in Shareholder Law”, Cambridge University Press.

Siems, M. (2008) “Shareholder Protection Around the World ("Leximetric II")”, Delaware Journal of Corporate Law 33: 111-147.

Siems, M. Deakin, S. and Lele, P., (2007) “The Evolution of Labour Law: Calibrating and Comparing Regulatory Regimes”, International Labour Review 146: 133-162.

Siems, M. (2007) “Legal Origins: Reconciling Law & Finance and Comparative Law”, McGill Law Journal 52: 55-81.

Siems, M. and Lele, P., (2007) “Shareholder Protection - A Leximetric Approach”, Journal of Corporate Law Studies 7: 17-50.

Siems, M. (2006) “Legal Adaptability in Elbonia”, International Journal of Law in Context 2: 393-408.

Siems, M. (2005), “Numerical Comparative Law - Do We Need Statistical Evidence in Order to Reduce Complexity?”, Cardozo Journal of International and Comparative Law, 13: 521-540.

Siems, M. (2005), “What Does Not work in Comparing Securities Laws: A Critique on La Porta et al.'s Methodology”, International Company and Commercial Law Review, 2005: 300-305.

Contact details

Mathias Siems
European University Institute
Law Department
Villa Salviati, Via Bolognese 156
I-50139 Firenze (FI)


View Mathias M. Siems's full profile on the Durham University website