We address the essential stability of Cournot-Nash equilibria for generalized games with a continuum of players, where only a finite number of them are atomic. Given any set of generalized games continuously parameterized by a complete metric space, we analyze the robustness of equilibria to...

We develop a general equilibrium model with incomplete financial participation and price dependent financial constraints. In our model, equilibrium exists even when agents do not have access to all financial contracts. For instance, exclusive credit lines and investment clubs are compatible with...

We consider a game with a continuum of players where only a finite number of them are atomic. Objective functions and admissible strategies may depend on the actions chosen by atomic players and on aggregate information about the actions chosen by non-atomic players. Only atomic players are...

We establish necessary and sufficient conditions for the individual optimality of a consumption-portfolio plan in an infinite horizon economy where agents are uniformly impatient and fiat money is the only asset available for inter-temporal transfers of wealth. Next, we show that fiat money has...

We analyze the possibility of the simultaneous presence of three key features in price-taking credit markets: infinity horizon, collateralized credit operations and effective additional enforcement mechanisms, i.e. those implying payments besides the value of the collateral guarantees. We show...

We consider a game with a continuum of players where at most a finite number of them are atomic. Objective functions are continuous and admissible strategies may depend on the actions chosen by atomic players and on aggregate information about the actions chosen by non-atomic players. When...

We build a general equilibrium model where agents are subject to endogenous trading constraints, making the access to financial trade dependent on prices and consumption decisions. Besides, our framework is compatible with the existence of endogenous financial segmentation and credit markets'...

We address a dynamic general equilibrium model where securities are backed by collateralized loans, and borrowers face endogenous liquidity contractions and financial participation constraints. Although the only payment enforcement is the seizure of collateral guarantees, restrictions on credit...