NO.PZ2018113001000061
问题如下:
Assume the VIX term structure is upward
sloping, and remains constant over time. According to the observation, the VIX
is at 11.40, the front-month futures contract trades at 12.50, and the
second-month futures contract trades at 14.40. A volatility trader decides to
implement a trade that would profit from the VIX carry roll down. Which of the
following strategies can be profitable?
选项:
A.Buy the VIX front- month futures and sell the VIX
second- month futures.
Buy VIX and sell the VIX front- month futures.
Buy VIX and sell the VIX second- month futures.
解释:
A is correct
中文解析:
本题考察的是“The VIX carry roll down”的知识点
首先我们需要注意的一点是,VIX是不能直接进行买卖的,所以B选项和C选项中说直接 buy VIX直接排除掉。(考试的时候也是,看到这种直接买卖VIX的表述,不用思考直接pass)
选项A对应的是buy VIX front- month futures and sell the VIX second- month futures.是说买一个月的VIX期货,卖出2个月的VIX期货。一个月后买入一个月的期货价格有12.5降到了11.4,亏了1.1。卖出的2个月的期货,由14.4降到了12.5,赚了1.9。一买一卖合计赚了0.8。所以选A。
第一个问题是:向上倾斜,意味着contango,为什么要short期货?预期上涨,合约也会上涨,难道不是long合约吗?
第二个问题是:两边都是大于VIX的,所以哪怕做也都应该同方向,为什么要buy+sell?
第三个问题是:计算收益时,统一使用(F1-S0)/Tf吗?还是说对于long是(F1-S0)/Tf,对于short则是(S0-F1)/Tf
谢谢!