We discuss the possibility of obtaining model-free bounds on volatility derivatives, given present market data in the form of a calibrated local volatility model. A counter-example to a wide-spread conjecture is given. keywords: local vol, Dupire’s formula; MSC: 91G99; JEL: G10.

Sutton (1998) has recently proposed a theoretical lower bound to firm size inequality when a market is made of several independent submarkets. His results are valid asymptotically, as the number of submarkets becomes arbitrarily large. We show that, in small samples, his results can be interpreted as a positive relationship between an index of firm size inequality and the number of submarkets. ...

Affective decision-making (ADM) is a refutable and predictive theory of individual choice under risk and uncertainty. It generalizes expected utility theory by positing the existence of two cognitive processes – the “rational” and the “emotional” process. Observed choice is the result of their simultaneous interaction. We present a model of affective choice in insurance markets, where risk perc...

We review the literature on return and cash flow growth predictability form the perspective of the present-value identity. We focus predominantly on recent work. Our emphasis is on U.S. aggregate stock return predictability, but we also discuss evidence from other asset classes and countries. JEL classification: G10, G12, G14, G35.

It is shown that the absence of call spread, butterfly spread and calendar spread arbitrages is sufficient to exclude all static arbitrages from a set of option price quotes across strikes and maturities on a single underlier.  2005 Elsevier Inc. All rights reserved. JEL classification: G10; G12; G13; G14

We compare capital requirements derived by tail conditional expectation (TCE) with those derived by tail conditional median (TCM) and find that there is no clear-cut relationship between these two measures in empirical data. Our results highlight the relevance of TCM as a robust alternative to TCE, especially for regulatory control. JEL Classification: G10, G11, G23, G29

We use a stock-market game and predictions of examination marks to examine differences between overconfidence and biased self-attribution (BSA) of British and Asian students. Although different overconfidence measures show little correlation, Asians are consistently more overconfident than the British. All are equally prone to BSA. © 2007 Elsevier Inc. All rights reserved. JEL classification: G...

We examine the dynamic effects of TFP news shocks in context frictions financial markets. document two new facts. First, a shock to future generates significant decline credit spread indicators along with robust improvement supply indicators. Second, we establish tight link between and that explain majority un-forecastable movements A DSGE model enriched sector Gertler-Kiyotaki-Karadi type very...

We dissect the impact of a large and sudden exchange rate appreciation on Swiss border import prices, retail consumer expenditures domestic imported nondurable goods, following removal EUR/CHF floor in January 2015. Cross-sectional variation price changes by currency invoicing carries over to prices allocations, impacting imports competing as well expenditures. provide measures sensitivity shar...