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A simple method for extracting the probability of default from American put option prices
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| Authors and Corporations: | , |
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| Other Authors: | Orosi, Greg [Author] |
| Edition: | Last updated: April 20, 2020 |
| Type of Resource: | E-Book |
| Language: | English |
| published: | |
| Series: |
Bank of Canada: Staff working paper ; 2020, 15
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| Source: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
| Summary: | In this paper, we present a novel method to extract the risk-neutral probability of default of a firm from American put option prices. Building on the idea of a default corridor proposed in Carr and Wu (2011), we derive a parsimonious closed-form formula for American put option prices from which the probability of default can be inferred. The proposed method is easy to implement and helps overcome the main limitation of the method used in Carr and Wu (2011), which relies on the price of one deep-out-of-the-money put option. Our empirical results are based on seven large U.S. firms for the period 2002 to 2010. These results show that, in some cases, the option-implied probability of default can provide a more accurate estimate of default probability, compared to the estimates implied from credit default swap spreads. |
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| Physical Description: | 1 Online-Ressource (circa 22 Seiten); Illustrationen |