In this paper we study the asset pricing problem when the volatility is random. First, we derive a PDE for the risk-minimizing price of any contingent claim. Secondly, we assume that the volatility process sigma (t) is observed through an observation process Y-t subject to random error. A price formula and a PDE are then derived regarding the stock price S-t and the observation process Y-t as parameters. Finally, we assume that S-t is observed. In this case we have a complete market and any contingent claim is then priced by an arbitrage argument instead of by risk-minimizing.
机构:
Univ Calif Los Angeles, Anderson Sch, Los Angeles, CA 90024 USA
Univ Manchester, Manchester, Lancs, EnglandUniv Calif Los Angeles, Anderson Sch, Los Angeles, CA 90024 USA
Brennan, Michael J.
Zhang, Yuzhao
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Rutgers State Univ, Business Sch, New Brunswick, NJ 08901 USAUniv Calif Los Angeles, Anderson Sch, Los Angeles, CA 90024 USA
机构:
South China Univ Technol, Sch Business Adm, Guangzhou 510640, Guangdong, Peoples R ChinaSouth China Univ Technol, Sch Business Adm, Guangzhou 510640, Guangdong, Peoples R China
Li, Pengshi
Yang, Jianhui
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South China Univ Technol, Sch Business Adm, Guangzhou 510640, Guangdong, Peoples R ChinaSouth China Univ Technol, Sch Business Adm, Guangzhou 510640, Guangdong, Peoples R China