We propose a model that delivers endogenous variations in term spreads driven primarily by banks' portfolio decision and their appetite to bear the risk of maturity transformation. We first show that fluctuations of the future profitability of banks' portfolios affect their ability to cover for...

There has been a long debate about whether speculators are stabilizing or not. We consider a model where speculators have a stabilizing role in normal times, but may also provoke large risk panics. The very feature that makes arbitrageurs liquidity providers in normal times, namely their...

In a two-country portfolio model with leverage constraints, I focus on private assets in order to understand how their behaviour can justify an expected excess return as well as the flight-to-safety observed in the data. The specific goal is to study how much these phenomena are explained by the...

Secondary markets for long-term assets might be illiquid due to adverse selection. In a model in which moral hazard is confined to project initiation, I find that: (1) when agents expect a liquidity dry-up on such markets, they optimally choose to self-insure through the hoarding of...

In der einfachen finanzmathematischen Welt herrscht ein konstanter Zinssatz. Wird die Modellwelt hinsichtlich einer nicht flachen Zinsstruktur abgeändert, so sollten die Barwertfaktoren um zwischenzeitliche Zinszahlungen (Zinseszinsen) neutralisiert werden. Die Berechnung der Barwertfaktoren...

Explanations of why changes in the relative quantities of safe debt seem to affect asset prices often appeal informally to a portfolio balance mechanism. I show how this type of effect can be incorporated in a general class of structural, arbitrage-free asset-pricing models using a numerical...

In der einfachen finanzmathematischen Welt herrscht ein konstanter Zinssatz. Wird die Modellwelt hinsichtlich einer nicht flachen Zinssatzstruktur abgeändert, so sollten die Barwertfaktoren um zwischenzeitliche Zinszahlungen (Zinseszinsen) neutralisiert werden. Die Berechnung der...

We present a network model of the interbank market in which optimizing risk averse banks lend to each other and invest in non-liquid assets. Market clearing takes place through a tâtonnement process which yields the equilibrium price, while traded quantities are determined by means of a...