價內雙賣 - 期貨

By Iris
at 2016-10-22T00:13
at 2016-10-22T00:13
Table of Contents
假設價格 指數9300
9200call 120點
9400put 120點
這樣時間價值都是20點,
雙賣,如果結算也是9300可以吃到40點的時間價值,
如果不幸跌,指數到9150點,
9200call大概剩12點,賺108點
9400put漲到308點,賠188點
淨賠是80點,
這時候平掉call,
再下一口小台期貨空單,去鎖住put,
因為put已經超過300,時間價值膨脹可能性不大,
繼續跌下去損失控制在80點,
而如果反彈回到9300,反而可以賺到58點的時間價值,
這樣對比在一開始9300時只下一口小台多單,指數到9150時賠150點,
這時候鎖單效益不大。
我想請問,我這樣雙賣的策略,有甚麼樣的風險是我沒想到的?
--
9200call 120點
9400put 120點
這樣時間價值都是20點,
雙賣,如果結算也是9300可以吃到40點的時間價值,
如果不幸跌,指數到9150點,
9200call大概剩12點,賺108點
9400put漲到308點,賠188點
淨賠是80點,
這時候平掉call,
再下一口小台期貨空單,去鎖住put,
因為put已經超過300,時間價值膨脹可能性不大,
繼續跌下去損失控制在80點,
而如果反彈回到9300,反而可以賺到58點的時間價值,
這樣對比在一開始9300時只下一口小台多單,指數到9150時賠150點,
這時候鎖單效益不大。
我想請問,我這樣雙賣的策略,有甚麼樣的風險是我沒想到的?
--
Tags:
期貨
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