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cherry0540 · 2023年05月30日

问一道题

NO.PZ2018113001000066

问题如下:

Which of the following statements about speculative volatility traders and hedgers of volatility is most incorrect?

选项:

A.

If speculative volatility traders believe that market conditions will remains stable, they often want to be net-short volatility.

B.

Most hedgers are net-long volatility position, because they want to buy protection from unanticipated price volatility.

C.

There is no differences between speculative volatility traders and hedgers of volatility. because they're all trading on volatility.

解释:

C is correct

中文解析:

投机性波动交易者通常希望净做空波动,如果他们相信市场状况将保持稳定。这样做的原因是,大多数期权在到期时仍然是OTM状态,期权卖方可以将期权费作为接受波动性风险的报酬。

大多数对冲者都是净多头波动,因为他们想从意料之外的价格波动中购买保护。购买保护通常意味着做多期权头寸。这可以被认为是为防止汇率波动而支付的保险费。

老师,能否解释一下为什么speculator是net short option,而hedger是net long? speculator看涨的话,也可以long call 获利;hedger如果有头寸的话,也可以short call对冲
2 个答案

pzqa31 · 2023年05月30日

嗨,爱思考的PZer你好:


补充一句,hedger更多采用多头头寸,并不表示他们不会去short,只是多头头寸大于空头头寸,所以表现出来net long position,反之,speculator也不是只做空不做多,只是做空为主,所以表现出的是net short position。

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就算太阳没有迎着我们而来,我们正在朝着它而去,加油!

pzqa31 · 2023年05月30日

嗨,努力学习的PZer你好:


同学,这道题目是去年R10部分今年新增的课后题,考察的是针对波动率的投机交易者和对冲交易者的一个对比,即投机者多做空,对冲着多做多。教材考纲中没有这个点,但是既然在课后题中涉及了,建议作为一个单独的内容记忆和掌握一下。


我个人对这个知识点的理解是这样的,供你参考:hedger因为都是主动去寻求保护的,所以多采用Long头寸。speculator的目标就是去博取更大收益,往往能承受更大风险,而总体来讲,short头寸相对long头寸一般风险都要大一些,比如我们知道long call最大损失就是期权费,这个损失是有限的。而short call 虽然赚了期权费,但是股价一但大涨就亏钱,而这个下跌损失是无限的。投机者持有一个short头寸,其实就是在赌市场不会出现大幅波动,这样就可以净赚一个期权费。

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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