This paper examines relationships between size and risk in financial markets. Based on the work of Makridakis / Taleb … [2009] and Taleb / Tapiero [2009], presents the problems of excessive risk and imbalances caused by the size of firms …. Markets mixed on firm growth traps externalities can influence risk, high-cost for the commons. A policy of regulation and …

(including external risk factors); the policy implications of this analysis are projected after evaluating two fundamental issues …