This paper describes a nancial market modelling framework that exploits the notion of a de ator. The denominations of the de ator measured in units of primary assets form a minimal set of basic nancial quantities that completely specify overall market dynamics. Risk premia of asset prices are obtained as a natural consequence of the approach. Contingent claim prices are computed under the real ...

In this paper we consider the problem of hedging contingent claims on a stock under transaction costs and stochastic volatility. Extensive research has clearly demonstrated that the volatility of most stocks is not constant over time. As small changes of the volatility can have a major impact on the value of contingent claims, hedging strategies should try to eliminate this volatility risk. We ...

Although dealership government and equity securities have, on the surface, similar market structures, the author demonstrates that some subtle differences exist between them that are likely to significantly affect the way market-makers trade, and as such have an impact on the liquidity that they provide. The author reviews some of the concepts recently introduced in the literature, examining mu...

This paper offers an alternative explanation for what is typically referred to as an asset pricing bubble. We develop a model that formalizes the Cochrane (2002) convenience yield theory of technology company stocks to explain why a rational agent would buy an “overpriced” security. Agents have a desire to trade but short-sale restrictions and other frictions limit their trading strategies and ...

In this paper, we assume that investors have the same information, but trade due to the evolution of their non-market wealth. Investors rebalance their portfolios in response to changes in their expected non-market wealth, and hence trade. Risky nonmarket wealth is non-hedgeable and independent of market risk, and thus represents an additive background risk. Investors who experience positive sh...

Before the introduction of a call auction at the close, the last minute of trading at the Paris Bourse was the most active of the whole day. Even though the bid–ask spread increased substantially, the probability of large and aggressive orders increased, as did price volatility. In addition, both the one-minute returns and the proportion of partially hidden orders increased. In this paper, we d...

Why do asset price bubbles continue to appear in various markets? This paper provides an overview of recent literature on bubbles, with significant attention given to behavioral models and rational models with frictions. Unlike the standard rational models, the new literature is able to model the common characteristics of historical bubble episodes and offer insights for how bubbles are initiat...

I demonstrate that non-financial corporations act as cross-market arbitrageurs in their own securities. Firms use one type of security to replace another in response to shifts in relative valuations, inducing negatively-correlated financing flows in different markets. Net equity repurchases and net debt issuance both increase when the expected returns on debt are particularly low, or when the e...

This paper investigates whether the degree of predictability can be explained by existing asset pricing models, and provides two theoretical upper bounds on the R-square of the regression of stock returns on predictors for given classes of models of interest. Empirically, we find that the predictive R-square is significantly larger than the upper bounds permitted by well known asset pricing mod...

The principal driving force in the development of the financial system of pre-industrial Europe was not lending per se, but payments. Trade among strangers required the development of methods of payment that did not require mutual acquaintance and trust. The two principal financial innovations of pre-industrial Europe—the deposit bank and the bill of exchange—evolved to address this need. Lendi...