Thesis: In an economic and regulatory context shaped by the aftermath of the 2007-2008 financial crisis, the purpose of this thesis is to contribute to the empirical academic literature of the field of banking economics by addressing three topics related to the common theme of the banking crisis. Chapter 1 shows the interest of applying an early warning system to anticipate bank failures in the case of the French banking system. The results validate the relevance of using the usual set of variables commonly seen in the literature. They also underline the necessity to take into account the type of bank, depending on their ownership, to improve the efficiency of the model. Chapter 2 assesses the impact of the regulation designed to address this issue of global systemically important banks. It turns out that following this regulation, these entities have substantially curbed the expansion of their balance sheets. We observed no negative consequences for the financing of the economy. However, as their funding cost advantage remains, it suggests that some distortions linked to the too-big-to-fail problem tend to persist. Chapter 3 examines the dynamics of credit to corporates in France over the economic cycle, and more particularly focuses on the asymmetries between types of bank. The results show that private banks tend to allocate credit in a procyclical manner while state-owned banks exhibit a rather acyclical behavior. Between them, cooperative banks appear less procyclical than private banks.