NO.PZ2019010402000019
问题如下:
The market price of the put option is overpriced relative to the binomial option pricing mode, what the positions the manager could have to take arbitrage opportunity’s advantage?
选项:
A.short put and buy the underlying
B.long put and buy the underlying
C.short put and short sell the underlying
解释:
C is correct.
考点:No-arbitrage approach
解析:
- 现在市场中的put option价格被高估,所以应该short put。但因为无套利需要满足两个条件:1.不承担任何风险,2.自己不出钱。Short put头寸在股票价格下跌时有亏损,所以需要再加上一个当股票价格下跌时可以带来收益的头寸,即short sell the underlying.
- 也可以从复制的角度出发,因为市场中的put被高估,所以short put。因为套利是买卖相同的东西,所以需要再复制一个put option的long头寸。long put头寸可以通过short sell the underlying 和lend a portion of the proceeds来实现。
如果是call overvalued,那就在市场上卖出call option,同时买入合成的call,那就是long underlying,short bond;
如果是call undervalued,那就在市场上买入all option,同时卖出合成的call,那就是short underlying,long bond;
如果是put overvalued,那就在市场上卖出put option,同时买入合成的put,那就是short underlying,long bond;
如果是put undervalued,那就在市场上买入put option,同时卖出合成的put,那就是long underlying,short bond;
请问这个是对冲的方式,不太理解long underlying 和short bond是什么意思?能否通过画图解释或者啥解释?
1.我的理解是必入underlying 不管是stock,futures contract ,活着是option是不是代表着“s-c"?
2.另外borrow 和lending对应的是buy还是sell ,和long short 对应吗比如sell=(wirte),financing代表-,investing代表+这类的替换或对应请问能帮忙整理一下关系吗?