I develop a search-and-bargaining model of endogenous intermediation in over-the-counter markets. Unlike the existing work, my model allows for rich investor heterogeneity in three simultaneous dimensions: preferences, inventories, and meeting rates. By comparing trading-volume patterns that...

The present value discount rate is about the investor, the expected market rate of return on his best alternative asset (BAA), his opportunity cost of buying a subject asset (not the subject's rate of return, subject owner's/seller's cost of capital, nor the required rate of return on an...

In this paper, I consider an exchange economy with complete markets where agents have heterogeneous beliefs and, possibly, preferences, and investigate the Market Selection Hypothesis that speculation rewards the agent with the most accurate beliefs. First, on the methodological level, I derive...

The steady application of Quantitative Easing (QE) has been followed by big and non-monotonic effects on international asset prices and international capital flows. These are difficult to explain in conventional models, but arise naturally in a model with collateral. This paper develops a...

We study the market implications of ambiguity sensitive preferences using the alpha-maxmin expected utility (alpha-MEU) model. In the standard Ellsberg framework we prove that alpha-MEU preferences are equivalent to either maxmin, maxmax or subjective expected utility (SEU). We show how...

We study the equilibrium implications of a multi-asset economy in which asset managers are subject to different benchmarks, and demonstrate how heterogeneous benchmarking generates a mechanism through which fundamental shocks propagate across assets. Fluctuations in asset managers' capital...

Italian Abstract:L'obiettivo di queste note è evidenziare il metodo di ottimizzazione del portafoglio unico per cui l'investitore massimizza la sua funzione di utilità in media e varianza del portafoglio rispetto al vincolo della frontiera efficiente dei possibili pesi in cui le attività...

We model the role of dealers in information diffusion in over-the-counter (OTC) markets. A dealer maintains relationships with a network of both informed customers who trade to profit from private information pertaining to asset values and risk-averse liquidity customers who trade to meet...

Cross-border financial flows arise when (otherwise identical) countries differ in their abilities to use assets as collateral to back financial contracts. Financially integrated countries have access to the same set of financial instruments, and yet there is no price convergence of assets...

The steady application of Quantitative Easing (QE) has been followed by big and non-monotonic effects on international asset prices and international capital flows. These are difficult to explain in conventional models, but arise naturally in a model with collateral. This paper develops a...