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Luxembourg is one of the most successful financial centers in the world. Initially associated with international syndicated loans, euro-bonds and euro-currency markets, Luxembourg has developed as a center for private banking and is currently the second largest center for the domiciliation of investment funds in the world after the US - with a portfolio equivalent to about sixty times the country’s GDP -, and the first captive reinsurance market in the European Union. As in many other financial centers, the interbank market plays an important role. This partly reflects intra-group operations of foreign banks using their Luxembourg branches and subsidiaries to adjust their liquidity position. More generally, Luxembourg has attracted foreign banks seeking to benefit from its favorable regulatory framework, political stability, language skills of the local workforce and the agglomeration of specialized skills in accounting and legal services.<p><p>The importance of the financial sector in Luxembourg implies that a computable general equilibrium (CGE) model with explicit modeling of the financial sector is indispensable in order to properly take into account the interaction between the financial and the real sector in the economy and the interconnectedness between different financial institutional sectors (e.g. commercial banks and investment funds). Explicit modeling of the financial sector also allows for an analysis of how the economy might respond to financial shocks.<p><p>This dissertation contributes to the literature by developing two analytical tools:<p><p>1.\ / Doctorat en Sciences économiques et de gestion / info:eu-repo/semantics/nonPublished