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mushkc · 2023年07月08日

VIX futures

* 问题详情,请 查看题干

NO.PZ202208100100000303

问题如下:

Which trade is Tryon most likely to implement to establish his equity market hedge?

选项:

A.

Trade 1

B.

Trade 2

C.

Trade 3

解释:

Solution

C is correct. Variance swaps have a valuable convexity feature—as realized volatility increases (decreases), the positive (negative) swap payoffs increase (decrease)—which makes them particularly attractive for hedging long equity portfolios. Because the volatility curve is in contango—that is, higher volatility is priced into the curve—Trade 1 is likely to experience roll-down losses as the futures price converges or is “pulled down” to the spot price. Trade 2 would benefit from a decrease rather than an increase in volatility; an alternative trade in the options space would be to buy call options to hedge the portfolio.

A is incorrect. Trade 1 is likely to experience roll-down losses as the futures price converges or is “pulled down” to the spot price.

B is incorrect. VIX put options would be bought to profit from an expectation that volatility will decrease because of stable equity market conditions.

中文解析:

本题考察的是VIX futuresVIX optionsvariance swap

A选项,题干中说到VIX futures curvecontango的,即远月的合约价格是高于近月合约的,因此如果像trade 1中描述的买远月的合约,随着到期日的临近,合约价格下跌,会有损失,所以该交易不合适。

B选项,也是因为VIX futures curvecontango的,即意味着将来波动率是预测上升的,因此也应该long VIX call options,而不应该是sell VIX put optionB不对。

C选项,long variance swap,即看涨波动率是合适的。关于vega notional的金额,因为vega notional表示的含义为:The vega notional represents the average profit and loss of the variance swap for a 1% change in volatility from the strike,即是一个平均收益或者损失的概念,所以trade 3中后半段的表述也是没有问题的。

1)如果认为VIX的形状是contango,是不是说明近期波动会低于远期波动?

2)如果远期波动比较高,获利方式难道不是去购买远期(back-end month)的VIX futures来对冲远期波动风险吗?

3 个答案
已采纳答案

pzqa31 · 2023年07月10日

嗨,从没放弃的小努力你好:


这道题已经说了要做多,如果是市场波动大的时候做多波动率,是long VIX call。如果预期波动率下降(就是市场比较平稳的时候),就要long VIX put。


long call和sell put是不同的,首先long是去主动出击,可能是为了盈利,也可能是为了cover风险,long方更希望期权能够执行;short是被动作为对手方,通常是为了赚取期权费,一般是不希望期行权的。long call On VIX是指如果波动率上升的时候可以赚钱,这种头寸一般是在预测未来市场波动率会上涨的时候构建。而short put on VIX是波动率下降的时候亏钱,通常是预测市场波动率不会下降(例如维持现状,或者波动率上升)时构建,虽然都是在波动率大的时候能够赚钱,但是出发点是不同的。

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mino酱是个小破货 · 2023年10月27日

波动率上升才long option,下降才short,call,put是股票市场看涨或看跌。麻烦老师解答问题前,好好沉淀下,把知识点理解透彻,免得误人子弟

PEI · 2024年03月21日

同意楼上这位

pzqa31 · 2023年11月07日

嗨,爱思考的PZer你好:


这个刚才回答过了,long call和sell put是不同的,首先long是去主动出击,是为了盈利,也可能是为了cover风险,long方更希望期权能够执行;short是被动作为对手方,通常是为了赚取期权费,一般是不希望期行权的。

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加油吧,让我们一起遇见更好的自己!

pzqa31 · 2023年07月09日

嗨,从没放弃的小努力你好:


题干中说到VIX futures curve是contango的,即远月的合约价格是高于近月合约的,由于VIX futures的标的是VIX指数,即恐慌指数。恐慌指数上升,自然波动率是上涨的。


但是其实本题判断波动率上涨这一点并不重要,因为题干直接说了他想做多波动率:第四段中有一句话说的是He wants to establish volatility exposure ,因此只需要判断森个策略中哪一个是做多波动率的就可以了。



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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!

mushkc · 2023年07月10日

如果要建立波动敞口,那B选项的sell put on VIX 不就是类似 long call on VIX吗?也是在增加波动敞口呀?二者区别是啥?

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