Managing swaption portfolio risk under different interest rate regimes
Efficient risk managing of swaption portfolios is crucial in the hedging of interest rate exposure. This paper formulates a portfolio risk management framework under stochastic volatility models. The implication of using the right volatility backbone in the stochastic-alpha-beta-rho (SABR) model is...
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| Main Authors: | , |
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| Format: | text |
| Language: | English |
| Published: |
Institutional Knowledge at Singapore Management University
2018
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| Subjects: | |
| Online Access: | https://ink.library.smu.edu.sg/lkcsb_research/5977 https://ink.library.smu.edu.sg/context/lkcsb_research/article/6976/viewcontent/Managing_swaption_portfolio_risk_under_different_interest_rate_regimes.pdf |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | Efficient risk managing of swaption portfolios is crucial in the hedging of interest rate exposure. This paper formulates a portfolio risk management framework under stochastic volatility models. The implication of using the right volatility backbone in the stochastic-alpha-beta-rho (SABR) model is analyzed. In order to handle negative interest rates, we derive a displaced-diffusion stochastic volatility (DDSV) model with closed-form analytical expression for swaption pricing. We demonstrate that the dynamics naturally allow for negative rates, and is also able to fit the market well. Finally, we show that choosing the right backbone in the DDSV model results in optimal hedging performance and P&L explanation. |
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