In this article we analyze the risk associated with hedging written call options. We introduce a way to isolate the gamma risk from other risk types and present its loss distribution, which has heavy tails. Moving to an insurance point of view, we define a loss ratio that we find to be well...

Weather influences our daily lives and choices and has an enormous impact on cooperate revenues and earnings. Weather derivatives differ from most derivatives in that the underlying weather cannot be traded and their market is relatively illiquid. The weather derivative market is therefore...

Weather derivatives (WD) are different from most financial derivatives because the underlying weather cannot be traded and therefore cannot be replicated by other financial instruments. The market price of risk (MPR) is an important parameter of the associated equivalent martingale measures used...

On the temperature derivative market, modeling temperature volatility is an important issue for pricing and hedging. In order to apply pricing tools of financial mathematics, one needs to isolate a Gaussian risk factor. A conventional model for temperature dynamics is a stochastic model with...

This paper demonstrates that executive compensation convexity, measured as the sensitivity of managerial equity compensation portfolios to stock volatility, predicts firm-specific crashes. A bottom-to-top decile change in compensation convexity results in a 21% increase in a firm's crash risk...

In this paper, I examine the sources of momentum returns and uncover a list of intriguing features. I find that when the momentum returns are decomposed the contributions of the explained and the unexplained risk factors depend on the level of analysis, the risk factors used, and the lag...

Covariance models of stock returns appear throughout the investment process, e.g., forecasting portfolio risk, hedging, constructing Markowitz return-risk optimal portfolios, and algorithmic trading. Typically built from historic time-series, they estimate the past but - because markets and...

We investigate the effects of return jumps on option bid-ask spreads measured in implied volatility. To explain bid-ask spread quoting behavior, we construct a general model with market makers trading in an incomplete market in which a Bernoulli-type jump could occur. Following a numerical...

The paper examines the tail behaviour in financial returns in the Indian debt market.Focussing on the Government securitries Market in India, the study examines whether the behaviour of the tail in the distribution of financial returns exhibit departures from Guaussian assumptions , and if so,...

This paper investigates the performance and characteristics of survivor stocks in the S&P 500 index. Using both in-sample and out-of-sample comparisons, survivor stocks outperformed this market index by a considerable margin. Relative to other S&P 500 index companies, survivor stocks tend to be...