We consider the problem of valuing European options in a complete market but with incomplete data. Typically, when the underlying asset dynamics is not specified, the martingale probability measure is unknown. Given a consensus on the actual distribution of the underlying price at maturity, we...

We consider the problem of valuing European options in a complete market but with incomplete data. Typically, when the underlying asset dynamics is not specified, the martingale probability measure is unknown. Given a consensus on the actual distribution of the underlying price at maturity, we...

Banking regulators often practice forbearance and ambiguity in insolvency resolutions. The paperexamines the effects of regulatory forbearance and ambiguity in a context of allocational efficiency.Bailouts, liquidations and their stochastic policy mix lead to suboptimal allocations if banks do...

Financial intermediaries may increase economic efficiency through intertemporal risk smoothing.However without an adequate regulation, intermediation may fail to do this. This paper studiesthe effects of a production shock in a closed economy and compares abilities of market-based andbank-based...

We study an equilibrium asset pricing model with several Lucas (1978) trees subject toevent risk, that is, the possibility that trees experience unexpected disasters. We exploit themarket clearing mechanism, in the presence of multiple positive net supply assets, to showthat the implications of...

This study explores the micro-level of making economic decisions, focusing on processes and causal relationships using which individuals (agents) take into account each other’s activities. A central concept employed herein is the Shared Mental Model (SMM) used by participants of joint activity...

This paper reflects on the relevance of "systems-theoretic" approaches to theinterdependent policy issues relating to the dynamics of science, technology and innovation and their relationship to economic growth. Considering the approach that characterizes much of the current economics...

Macroeconomics has been often criticized for being useless particularly since the Great Recession. In this paper, I show that macroeconomics is still important, useful, and needed on the basis of the concept of a “Nash equilibrium of a Pareto-inefficient path” (NEPIP). On a NEPIP, the...

None of the known macroeconomic theories are adequate to understand what to do in a global crisis like the 2020 Global Pandemic. Rational Expectations and monetarism cannot even ex-plain how is that a global crisis like this happens. The IS-LM model was designed to manage business cycles, but...

This article analyzes the effect of speculation on the economic welfare from various criteria, using a simple Edgeworth box within a three-period Walrasian competition framework. Here “speculation” is defined as a series of transition processes of each agent’s spontaneous production of...