Equity index collar strategies are often perceived as a way for investors, at little to no cost, to exchange some upside exposure for reduced losses on the downside. That perception may be accurate if one considers only the net dollar cost of the strategy's initial option trades, but it fails to...

Regardless of the distributions of spot and futures returns, the hedge ratio determined by minimizing the portfolio's Aumann and Serrano (2008) index of riskiness is always smaller than the hedge ratio determined by minimizing the portfolio's variance. It is also demonstrated that the Foster and...

We consider the valuation and risk management of derivatives on defaultable assets such as bonds taking into account funding (FVA), cash collateral, underlying default, counterparty default (CVA) and default correlation using joint default poisson process. The framework can be considered as an...

In this paper we consider the generation of implied volatility risk scenarios, with a special focus on swaption implied volatility smile, e.g., as modeled by a displaced SABR model.The generation of implied volatility risk scenarios is much more demanding than other risk factors, like interest...

Using a Bayesian time‐varying beta model, we explore how the systematic risk exposures of hedge funds vary over time conditional on some exogenous variables that managers are assumed to use in changing their trading strategies. In such a setting, we impose a structure on fund returns, betas...