We examine how euro conversion affected trading costs and volume in European equity markets. Euro conversion immediately changed tick sizes and price transparency, both of which could affect trading costs and relative trading volume. Longer-run, conversion could boost competition among...

This paper proposes a new mutual exciting regime-switching model where crises can spread contagiously across countries. Each country has its own hidden stochastic process that determines whether it is in a normal or crisis regime. The mutual-excitation component allows interactions in the Markov...

We define two measures: the Model Performance Ratio (MPR), which ranks asset pricing models based on their ability to price random portfolios, and the Rate of Market Efficiency (RME), which measures market efficiency assuming the best pricing model (largest MPR). We find that: (i) market...

In this primer, we review the classical methods for assessing the performance of a financial portfolio. The analysis relies on benchmarking the return on the portfolio with that of a peer group. We define and discuss the pros and cons of four performance metrics that are theoretically consistent...

The duration of a bond approximately measures the interest rate risk caused by parallel shifts of the yield curve. This paper uses a generalization of the duration suggested by Diebold et al. (2006a), that takes the variations of the level, the slope and the curvature of the yield curve into...

This paper shows that the notion of rate of return is best understood through the lens of the average-internal-rate-of-return (AIRR) model, first introduced in Magni (2010a). It is an NPV-consistent approach based on a coherent definition of rate of return and on the notion of Chisini mean, it...

It is commonly overlooked that the concept of market efficiency embowers a time-dimension. Illustrating with an example from the class of persistent random walks, we show that a price process can be a martingale on one time-scale but inefficient on another. This means that just as market...

This paper reviews the main dimensions underlying the selection of a classical portfolio performance measure, namely the Sharpe Ratio, Jensen's alpha, the Modified Jensen's alpha, the Treynor Ratio, and the Information Ratio. We first examine how they differ from each other according to the risk...

Financial analyses such as valuation, solvency and capital adequacy play a crucial role in bankruptcy. Over the course of the 20th century, methods of financial analysis in bankruptcy have shifted from earnings multiples to discounted cash flow (DCF) and recently to market-based approaches such...

My recent book, Econophysics and Capital Asset Pricing: Splitting the Atom of Systematic Risk, splits beta, the capital asset pricing model's basic unit of systematic risk, into subatomic (or “baryonic”) components, by analogy to the Standard Model of particle physics. This essay offers...