Credit Risk Hedging—Using Share Short Selling as Hedge Tool
Date Issued
2009
Date
2009
Author(s)
Hsieh, Meng-Han
Abstract
In the middle of 2007, since Bear Stearns hedge funds suspended redemption, the credit market turmoil prevailed. With Bears Stearns being taken over and Lehman Brothers ending in bankruptcy, credit default swap spreads spiked to historical high level. A lifer’s credit position had suffered huge loss if it held sub prime related investments or collateralized debt obligation (CDO). A manager can hedge its loss by using credit default swap to hedge the loss in default. However, regulatory or credit line limitations may prompt he/she to use other hedge tools. negative relationship exists in a firm’s share price and credit spread. With the fall in equity buffer, the credit spread reflecting credit risk is likely to widen as well. Therefore, our study utilizes share short selling as a method to hedge against credit risk. By using a regression, a hedge ratio is determined by the return of share short-selling and long credit default swap position. Then, the hedge results are determined by dynamically rebalancing the hedge position. In order to achieve better hedge results, adjustments are made to the hedge ratio using the return’s correlation and standard deviation. We conclude by suggesting life insurance companies shall utilize the market opportunities to form a credit reserve for future potential credit loss.
Subjects
credit risk
credit default swap
short selling
dynamic hedge
hedge ratio
Type
thesis
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