In this paper, we are interested in continuous time models in which the index level induces some feedback on the dynamics of its composing stocks. More precisely, we propose a model in which the log-returns of each stock may be decomposed into a systemic part proportional to the log-returns of...

We deal with the problem of outsourcing the debt for a big investment, according two situations: either the firm outsources both the investment (and the associated debt) and the exploitation to a private consortium, or the firm supports the debt and the investment but outsources the...

We study a mean-field version of rank-based models of equity markets such as the Atlas model introduced by Fernholz in the framework of Stochastic Portfolio Theory. We obtain an asymptotic description of the market when the number of companies grows to infinity. Then, we discuss the long-term...

In the present paper, we prove that the Wasserstein distance on the space of continuous sample-paths equipped with the supremum norm between the laws of a uniformly elliptic one-dimensional diffusion process and its Euler discretization with $N$ steps is smaller than $O(N^{-2/3+\varepsilon})$...

We analyze the regularity of the optimal exercise boundary for the American Put option when the underlying asset pays a discrete dividend at a known time $t_d$ during the lifetime of the option. The ex-dividend asset price process is assumed to follow Black-Scholes dynamics and the dividend...

This paper aims to connect two strands of the venture capital literature: the inter-relationships among venture capitalists (VCs) on the one hand, and between VCs and their funds providers on the other hand. It examines the existence of a relationship between type of fund provider and skill...

De nombreux travaux soutiennent que les CVCs (Corporate Venture Capitalists) financent des investissements ayant une rentabilité moindre que les IVCs (Independent Venture Capitalists). Plusieurs explications sont avancées. La plus fréquente est que les CVCs, assurés d'un refinancement...

In the aftermath of the sovereign debt criss, open-market interventions prevailed within the central bank's policy answers known under the label unconventional monetary policy measures. During interwar period, France was an isolated case, among the leading countries, by everlastingly rejecting...

Since 2000, South American economies have undertaken several regional projects to eliminate socioeconomic inequalities and improve citizens' living standards. This study evaluates the convergence in real GDP per-capita, as a suitable proxy measure, of 10 Unasur members, namely Argentina,...

We analyse the determinants of banks' balance-sheet and leverage-ratio dynamics and their role in increasing financial fragility. Our results are twofold. First, we show that there is a value of bank's leverage that minimises financial fragility. Second, we show that this value depends on the...