Semi closed-form pricing autocallable ELS using Brownian BridgeSemi closed-form pricing autocallable ELS using Brownian Bridge
- Other Titles
- Semi closed-form pricing autocallable ELS using Brownian Bridge
- Authors
- 이민하; 홍지민
- Issue Date
- May-2021
- Publisher
- 한국통계학회
- Keywords
- autocallable structured product; equity-linked security (ELS); Brownian Bridge technique
- Citation
- Communications for Statistical Applications and Methods, v.28, no.3, pp.251 - 265
- Journal Title
- Communications for Statistical Applications and Methods
- Volume
- 28
- Number
- 3
- Start Page
- 251
- End Page
- 265
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41006
- DOI
- 10.29220/CSAM.2021.28.3.251
- ISSN
- 2287-7843
- Abstract
- This paper discusses the pricing of autocallable structured product with knock-in (KI) feature using the exit probability with the Brownian Bridge technique. The explicit pricing formula of autocallable ELS derived in the existing paper handles the part including the minimum of the Brownian motion using the inclusion-exclusion principle. This has the disadvantage that the pricing formula is complicate because of the probability with minimum value and the computational volume increases dramatically as the number of autocall chances increases. To solve this problem, we applied an e cient and robust simulation method called the Brownian Bridge technique, which provides the probability of touching the predetermined barrier when the initial and terminal values of the process following the Brownian motion in a certain interval are specified. We rewrite the existing pricing formula and provide a brief theoretical background and computational algorithm for the technique. We also provide several numerical examples computed in three di erent ways: explicit pricing formula, the Crude Monte Carlo simulation method and the Brownian Bridge technique.
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