This paper shows that, in the canonical dynamic rational expectations equilibrium model, public information about future noise trading is potentially detrimental to contemporaneous price efficiency. Our result supports concerns that social sentiment investing, sparked by growing availability of...

Do all types of information benefit the efficiency of prices in the sense that they drive them closer to fundamentals compared to the situation where information does not exist? Looking at the competitive noisy rational expectations framework, the clear answer of the literature is: yes. It...

In this paper, I relax the common assumption of the one-dimensionality of noise made in the standard competitive noisy rational expectations framework. Within an environment characterized by multidimensional noise, I explore the strategic interactions between different traders that are informed...

Greenwald und Stiglitz schlagen vor, Konjunkturfluktuationen durch das Zusammenspiel von Unvollkommenheiten in Kapitalmarkt und Arbeitsmarkt zu erklären: Wegen Kapitalmarktunvollkommenheit schwankt die Arbeitsnachfrage der Unternehmen mit ihrer Eigenkapitalausstattung; wegen...

The most fundamental proposition about growth and competition is that there is a tradeoff between static welfare and long-term growth. This paper reconsiders this basic proposition in an increasing product variety endogenous growth model with competitive markets for 'old' innovative products and...

Microfinance currently experiences a huge inflow of private investors and a surge in the use of market instruments. This raises the question of what market equilibria in microfinance markets look like and which kinds of market failure tend to afflict them. The present paper conducts an...

In den vergangenen Jahren hat sich das Verständnis der Volkswirtschaftslehre gewandelt. Bis in die siebziger Jahre dominierte die Wirtschaftspolitik, die sich auch als Berater außerhalb der Universitäten verstand. Dann schwappte von den USA die Mathematisierung der Volkswirtschaftslehre nach...

This paper analyzes socially responsible investment in the Walrasian model with uncertainty. It proves the following neutrality result: if each consumer's utility function with social responsibility is a function of her utility without social responsibility and asset holdings and if financial...