Reproduction de : Thèse de doctorat : Sciences de gestion : Lyon 3 : 2006. / Titre provenant de l'écran-titre. Bibliogr. p. 299-308.

Le résumé en français n'a pas été communiqué par l'auteur. / In this paper, I study the effect of risk-free rate shocks on firms that are exposed to interest rate risk. To examine their influence on the firms’ investment behaviours, I define an interest rate exposure, which is measured by the total floating debt, so that the impact of interest rate shocks on firms can be measured by the product of the interest rate exposure and the change in the interest rate. Using the Compustat data from 1974-2012 and the US annual fundamental financial data, I firstly find that the firms, which are exposed more to interest, have more sensitive cash flows of interest payments and retained earnings. Secondly, I find that exposed firms’ investment behaviours are sensitive to the interest rate shocks as well: the higher the exposure to interest rate risk, the more the firms would react to interest rate shocks. Furthermore, I show that financially constrained or high-leverage firms are more sensitive to interest rate shocks than financially non-constrained or low-leverage ones. Interestingly, I find that the fact that firms have different reactions to the interest rate shocks of different signs also works for R&D policies. Finally, I show that the model structure changes a lot after the 2008 financial crisis. We study the reactions of insurance companies to the unexpected interest shocks, which are defined by using the level and the slope of future contract interest rates. We find that on average, insurance companies have significantly positive abnormal returns following a positive unexpected shock in the level or the slope of interest rates: a 1% increase in the level or the slope of interest rates will increase the abnormal returns on average by 2.59% and 1.63%, respectively. We also find that insurance firms engage in maturity transformation in the opposite direction of banks: insurance companies, whose long-term debts will maturate in a very long term, will benefit from the increase in interest rate slope shocks rather than banks’ riding on the yield curve through a large mismatch between assets and liabilities. The empirical results provide important policy implications: interest rate shocks boost the value of insurance equities, with a decreasing effect on life, property & causality, and multi-line, but not for the reinsurance or insurance brokers. I investigate how the 2011 and 2014 EU stress tests affect the risk-taking of Euro-pean banks. I document a non-monotonic relationship between banks’ risk-shifting resulting from regulatory arbitrage and the tightness of their capital constraint (i.e., the distance between their ex-ante capital ratio and the regulatory level): banks with capital ratios marginally above the regulatory level do more regulatory arbitrage than banks with a level of capital ratio significantly below or above the regulatory level. I also study the indirect effect of the tests on the financing costs of banks which are excluded from the tests: their financing costs on the corporate bond market increase with the level of negative information released in the country in which they are located.

Reproduction de : Thèse de doctorat : Sciences de gestion : Lyon 3 : 2006. / Titre provenant de l'écran-titre. Bibliogr.

Cette thèse construit un modèle théorique qui renouvelle l’approche traditionnelle de l’équilibre du marché. En introduisant dans le paradigme néo-classique le principe de préférence pour la quantité, il génère de façon optimale des stocks dans un marché concurrentiel. Les résultats sont très importants, car ils expliquent à la fois l’émergence des invendus et l’existence de cycles économiques. En outre, il étudie le comportement optimal du monopole dont la puissance de marché dépend non seulement de la quantité de biens étalés, mais aussi de celle de biens achetés. Contrairement à l’hypothèse traditionnelle selon laquelle le monopoleur choisit le prix ou la quantité qui maximise son profit, il attire, via un indice de Lerner généralisé la demande à la fois par le prix et la quantité de biens exposés. Quelle que soit la structure du marché, le phénomène d’accumulation des stocks de biens apparaît dans l’économie. De plus, il a l’avantage d’expliquer explicitement les achats impulsifs non encore traités par la théorie économique. Pour vérifier la robustesse des résultats du modèle théorique, ils sont testés sur des données américaines. En raison de leur non-linéarité, la méthode de Gauss-Newton est appropriée pour analyser l’impact de la préférence pour la quantité sur la production et l’accumulation de biens, et par conséquent sur les prévisions de PIB. Enfin, cette thèse construit un modèle à générations imbriquées à deux pays qui étend l’équilibre dynamique à un gamma-équilibre dynamique sans friction. Sur la base de la contrainte de détention préalable d’encaisse, il ressort les conditions de sur-accumulation du capital et les conséquences de la mobilité du capital sur le bien-être dans un contexte d’accumulation du stock d’invendus / This thesis constructs a theoretical model that renews the traditional approach of the market equilibrium. By introducing into the neoclassical paradigm the principle of preference for quantity, it optimally generates inventories within a competitive market. The results are very important since they explain both the emergence of unsold goods and the existence of economic cycles. In addition, it studies the optimal behavior of a monopolist whose the market power depends not only on the quantity of displayed goods but also that of goods that the main consumer is willing to buy. Contrary to the traditional assumption that the monopolist chooses price or quantity that maximizes its profit, through a generalized Lerner index (GLI) it attracts customers’ demand by both the price and the quantity of displayed goods. Whatever the market structure, the phenomenon of inventory accumulation appears in the economy. Furthermore, it has the advantage of explicitly explaining impulse purchases untreated by economics. To check the robustness of the results,the theoretical model is fitted to U.S. data. Due to its nonlinearity, the Gauss-Newtonmethod is appropriate to highlight the impact of consumers’ preference for quantity on production and accumulation of goods and consequently GDP forecast. Finally, this thesis builds a two-country overlapping generations (OLG) model which extends the dynamic OLG equilibrium to a frictionless dynamic OLG gamma-equilibrium. Based on the cash-inadvance constraint, it highlights the conditions of over-accumulation of capital and welfare implications of capital mobility in a context of accumulation of stock of unsold goods.