We consider economies with incomplete markets, one good per state, private ownership of initial endowments, a single firm, and no assets other than shares in this firm. In this simple framework, arbitrarily small income effects can render every market equilibrium resulting from some production...

A classic characterization of competitive equilibria views them as feasible allocations maximizing a weighted sum of utilities. It has been applied to establish fundamental properties of the equilibrium notion, such as existence, determinacy, and computability. However, it fails for economies...

In this paper, we provide a characterization of interim inefficiency in stochastic economies of overlapping generations under possibly sequentially incomplete markets. With respect to the established body of results in the literature, we remove the hypothesis of two-period horizons, by...

Investment opportunities are plenty, but not all are profitable. This papers seeks to clarify the need to make a proper fundamental analysis when investing in various securities. Fundamental analysis does not require one to be a financial analyst so as to detect high risk assets or assets with a...

We study how transparency, modeled as information about one's counterparty liquidity needs, affects the functioning of an over-the-counter market. In our model, investors hedge endowment risk by trading bilaterally in a search-and-matching environment. We construct a bargaining procedure that...

I study the welfare implications of size-dependent firm regulation policies (SDPs) in the presence of entrepreneurial risks. Although SDP has been considered a source of misallocation, I show that, once entrepreneurial risks are taken into account, SDP can improve efficiency. Quantitatively, I...

A new measure of constrained efficiency for application in economies with incomplete markets is presented. This measure — termed Allais-Malinvaud efficiency — can be viewed as adjusting for market incompleteness not fully captured in previous work. It is shown that equilibrium allocations in...

In this paper, I construct a model of an exchange economy in which bankruptcy arises in a manner similar to what we observe. This model is a more realistic representation of some markets in which intertemporal assets are traded. Using standard and natural assumptions, I show that every economy...

This paper analyzes the optimal monetary policy in a model with a public sector when firms choose prices under incomplete information, and the government can not observe the current state perfectly. We accommodate the notion of Odyssean forward guidance in a framework with a public sector. The...

We reconsider the well-known result of Arrow (1953) that the set of equilibria of an economy with complete markets coincides with the one of an economy with sequentially complete markets. We show by means of two examples that this result is problematic when there exist multiple equilibrium...