李同学2018-04-17 09:59:45
老师,习题600题麻烦讲解下,如果用delta法算时,为什么用strick price2200作为call option的价格?谢谢!
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金程教育吴老师2018-04-17 10:43:50
学员你好,最新版600题(麻烦最好把题目贴上,怕对不上)
An at-the money European call on the DJ EURO STOXX 50 index a strike of 2200 and maturing in 1 year is trading at EUR 350, where contract value is determined by EUR 10 per index point. The risk-free rate is 3% per year, and the daily volatility of the index is 2.05%. If we assume that the expected return on the DJ EURO STOXX 50 is 0%, the 99% 1-day VaR of a short position on a single call calculated using the delta-normal approach is closest to:
A. EUR 8
B. EUR 53
C. EUR 84
D. EUR 525
学员你好 。指数2000点,一个点价值10欧元,所以根据delta normal法里的delta法 VAR=△×z×P×σ (注意:这题指数收益率均值为0)
P的价格就为2000×10=20000(注意:指数价格计算规则FRM里是这样的,这题需要以指数为标的,用delta法)
At the money delta题目默认为0.5(注意:实际中delta>0.5)
Zα=2.33
波动率用标的资产的, 是2.05%
平时做题的时候也要小心天数导致的之转换,例如1 day VAR 转换为 10 day VAR
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