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jianghaiyang · 2021年04月05日

请问这种策略中的第三种方法VIX futures

NO.PZ2019122802000017

问题如下:

Sushil Wallace is the chief investment officer of a large pension fund. Wallace wants to increase the pension fund’s allocation to hedge funds and recently met with three hedge fund managers. These hedge funds focus on the following strategies:
Hedge Fund A: Specialist—Follows relative value volatility arbitrage

Describe three paths for implementing the strategy of Hedge Fund A.

选项:

解释:

Hedge Fund A’s volatility trading strategy can be implemented by following multiple paths. One path is through simple exchange-traded options. The maturity of such options typically extends to no more than two years. In terms of expiry, the longer-dated options will have more absolute exposure to volatility levels than shorter-dated options, but the shorter-dated options will exhibit more delta sensitivity to price changes.
A second, similar path is to implement the volatility trading strategy using OTC options. In this case, the tenor and strike prices of the options can be customized. The tenor of expiry dates can then be extended beyond what is available with exchange-traded options.
A third path is to use VIX futures or options on VIX futures as a way to more explicitly express a pure volatility view without the need for constant delta hedging of an equity put or call for isolating the volatility exposure.
A fourth path for implementing a volatility trading strategy would be to purchase an OTC volatility swap or a variance swap from a creditworthy counterparty. A volatility swap is a forward contract on future realized price volatility. Similarly, a variance swap is a forward contract on future realized price variance, where variance is the square of volatility. Both volatility and variance swaps provide “pure” exposure to volatility alone, unlike standardized options in which the volatility exposure depends on the price of the underlying asset and must be isolated and extracted via delta hedging.

老师能不能详细讲一讲呢?多谢了!

8 个答案

伯恩_品职助教 · 2021年05月08日

嗨,努力学习的PZer你好:


Zunniyaki同学你好,你看下我的解释,是可以同时对冲掉的啊,时间比较的才有gamma问题,这个时候就根据delta和gamma的情况做多或者做空stock就同时对冲掉了

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

伯恩_品职助教 · 2021年04月12日

嗨,爱思考的PZer你好:


加油加油

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努力的时光都是限量版,加油!

伯恩_品职助教 · 2021年04月11日

嗨,努力学习的PZer你好:


同学,你想想什么叫便宜?你要理解便宜的概念是什么,一个价值100元的自行车花了110元买的,而一个价值100万的汽车花了90万买的,请问是自行车花费便宜还是这个汽车花费便宜。

long将来波动率会涨的,也就是看好未来,那现在的价格就是便宜的。

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

jianghaiyang · 2021年04月12日

明白了,谢谢老师

伯恩_品职助教 · 2021年04月11日

嗨,爱思考的PZer你好:


gamma对冲的风险来自于对应的stock 的价格变动幅度与其不是同比例。delta和stock变动是同比例的。

我大概理解你的疑问点了。我先大概给你讲下。这块李老师讲的很详细,建议你再重新听一下。我之前说过 relative value volatility arbitrage就是做多波动率低的,做空波动率高的,但是策略一和二的期权除了受到波动率影响,还有delta和gamma等影响,现在要去除掉这部分影响,首先明白delta和gamma是什么,delta就是stock的涨跌导致的期权的涨跌,gamma是这个二阶导,变动并不是线性的。现在要去除这个影响因素,比如买的call,本来是要做多波动率的,现在因为stock跌了,导致call受影响也跌了,虽然call因为波动率的影响跌的没有股票多,但是还是亏损了,咋办?那做空股票对吧?call下跌亏损的,在做空stock那补回来就不受到delta的影响了。gamma也是我之前的例子这样去除掉。我现在只要call的波动率。这样理解了吗?墙裂建议同学重新听下这个视频。通过和你回答,我认为你这块掌握不扎实,为了你能稳稳地通过三级,这里我必须负责任的建议你补好基础知识。加油!!只要努力做好基础工作,三级一定会过的。

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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!

jianghaiyang · 2021年04月11日

好的,谢谢老师

jianghaiyang · 2021年04月11日

不过您说这个买波动大的,卖波动小的,似乎和定义买便宜的波动,卖贵的波动有些矛盾吧?

伯恩_品职助教 · 2021年04月11日

嗨,爱思考的PZer你好:


同学你好,就是我说的那样啊,变动小的,如果是call的话,delta是1的话,有10张call就做空10股stock,股票涨多少,期权跌多少,等于不受资产价格涨跌的影响,这不是就对冲掉delta了吗?如果有gamma还是刚那个例子,如果是正的gamma,就相应的多对冲一下stock。这样变动大时就业对冲掉了。简单说就是根据delta和gamma的值做多或者做空stock

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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!

jianghaiyang · 2021年04月11日

那就是说delta 和gamma对冲的风险来自于对应的stock 的价格变动幅度与其不是同比例,可能多点也可能少点,是这意思吗?

伯恩_品职助教 · 2021年04月11日

嗨,爱思考的PZer你好:


同学你好,delta对冲很简答,delta是一阶导,说白了就是同涨同跌,如果delta是,1,那就是stock涨了10,option涨了10,有十张call就做空10股stock,如果是-1,比如put,有十张put,那就做多10股stock。

至于gamma,假设100股C股票涨了1%,然后*100股,就涨了100对吧,而买的这个C股票的call因为gamma的原因没有百分百的对冲,涨了1.2%,对应就是涨了120对吧。那现在多了120-100=20,就卖空20股C股票,这样就100%的对冲了。这样能理解了吗?

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加油吧,让我们一起遇见更好的自己!

jianghaiyang · 2021年04月11日

那策略一二是怎么对冲掉delta 和gamma 的呢?

Zunniyaki · 2021年05月08日

老师,如果是这样的情况,那是不是说delta 和gamma没法同时对冲掉了?

伯恩_品职助教 · 2021年04月10日

嗨,从没放弃的小努力你好:


同学你好,首先只要 relative value volatility arbitrage,都是short波动率低,long波动率高的,进行套利。这四种都是,只是这四种都有各自的特点,首先就是策略一和策略二都受到delta和gamma的影响(所以要想办法对冲掉),策略三和四不受影响。

策略一是通过简单的交易所交易期权。这类期权的到期时间一般不超过两年。从到期日来看,期限较长的期权比期限较短的期权对波动率水平的绝对风险敞口更大,所以是long长期short短期,但期限较短的期权对价格变化表现出更多的delta敏感性,所以对冲掉delta。

策略二类似的路径是利用场外期权实施波动率交易策略。在这种情况下,期权的期限和行权价格可以自定义。然后,到期日的期限可以扩展到交易所交易的期权之外。但是会有counterpart risk的风险。

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努力的时光都是限量版,加油!

jianghaiyang · 2021年04月11日

谢谢老师,讲得很清楚,能不能再说说delta和gamma 是怎么对冲掉的呢?

伯恩_品职助教 · 2021年04月06日

嗨,从没放弃的小努力你好:


同学你好,我不太明白你具体哪里不太明白,我按照我的思路给你讲下, relative value volatility arbitrage实际就是套利,赚取spread,做空高估volatility的,做多类似的低估volatility。但是有的(比如策略一和策略二,的期权)实施这个策略会有delta和gamma的影响(这块我默认你是理解的,因为我看你只提问策略3是不理解,如果这块也不理解,及时回复,我会进一步的解释,大概说下就是期权会有方向性的delta和二阶导的gamma等因素影响),但是我不想受除了volatility以外的因素影响,就需要借助工具对冲掉,对吧,但是一般都不能完全对冲干净其它影响因素,这样套利就很受影响。这里策略三 实际VIX Index futures (or options on VIX futures),本质就是一个专门交易volatility的index的future或者volatility的index的future的期权(有点绕口,可以理解就是前面的future为底层资产的option)。因为只交易volatility,所以影响因素只有volatility,这时候,就只考虑做多低估的volatility的future做空类似的高估的volatility的future。而不用担心受到delta和gamma的影响了。这样明白了吗?

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加油吧,让我们一起遇见更好的自己!

jianghaiyang · 2021年04月10日

谢谢老师,很详细,那能不能再讲一讲策略一和策略二呢?

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NO.PZ2019122802000017 问题如下 Sushil Wallais the chief investment officer of a large pension fun Wallawants to increase the pension funs allocation to hee fun anrecently met with three hee funmanagers. These hee fun focus on the following strategies:Hee FunSpecialist—Follows relative value volatility arbitragescrithree paths for implementing the strategy of Hee Fun Hee FunA’s volatility trang strategy cimplementefollowing multiple paths. One path is through simple exchange-traoptions. The maturity of suoptions typically exten to no more thtwo years. In terms of expiry, the longer-teoptions will have more absolute exposure to volatility levels thshorter-teoptions, but the shorter-teoptions will exhibit more lta sensitivity to prichanges.A secon similpath is to implement the volatility trang strategy using OTC options. In this case, the tenor anstrike prices of the options ccustomize The tenor of expiry tes cthen extenbeyonwhis available with exchange-traoptions.A thirpath is to use VIX futures or options on VIX futures a wto more explicitly express a pure volatility view without the neefor constant lta heing of equity put or call for isolating the volatility exposure.A fourth path for implementing a volatility trang strategy woulto purchase OTC volatility swor a varianswfrom a cretworthy counterparty. A volatility swis a forwarcontraon future realizeprivolatility. Similarly, a varianswis a forwarcontraon future realizeprivariance, where varianis the square of volatility. Both volatility anvarianswaps provi “pure” exposure to volatility alone, unlike stanrzeoptions in whithe volatility exposure pen on the priof the unrlying asset anmust isolateanextractevia lta heing.首先只要Specialist— relative value volatility arbitrage,都是short波动率低,long波动率高的,进行套利。这四种都是,只是这四种都有各自的特点,首先就是策略一和策略二都受到lta和gamma的影响(所以要想办法对冲掉),策略三和四不受影响。策略一是通过简单的交易所交易期权。这类期权的到期时间一般不超过两年。从到期日来看,期限较长的期权比期限较短的期权对波动率水平的绝对风险敞口更大,所以是long长期short短期,但期限较短的期权对价格变化表现出更多的lta敏感性,所以对冲掉lta。策略二类似的路径是利用场外期权实施波动率交易策略。在这种情况下,期权的期限和行权价格可以自定义。然后,到期日的期限可以扩展到交易所交易的期权之外。但是会有counterpart risk的风险。对冲掉lta和gamma方法,lta对冲很简答,lta是一阶导,说白了就是同涨同跌,如果lta是,1,那就是stock涨了10,option涨了10,有十张call就做空10股stock,如果是-1,比如put,有十张put,那就做多10股stock。至于gamma,假设100股C股票涨了1%,然后*100股,就涨了100对吧,而买的这个C股票的call因为gamma的原因没有百分百的对冲,涨了1.2%,对应就是涨了120对吧。那现在多了120-100=20,就卖空20股C股票,这样就100%的对冲了。 relative value volatility arbitrage实际就是套利,赚取sprea做空高估volatility的,做多类似的低估volatility。但是有的(比如策略一和策略二,的期权)实施这个策略会有lta和gamma的影响(大概说下就是期权会有方向性的lta和二阶导的gamma等因素影响),但是我不想受除了volatility以外的因素影响,就需要借助工具对冲掉,对吧,但是一般都不能完全对冲干净其它影响因素,这样套利就很受影响。这里策略三 实际VIX Inx futures (or options on VIX futures),本质就是一个专门交易volatility的inx的future或者volatility的inx的future的期权(有点绕口,可以理解就是前面的future为底层资产的option)。因为只交易volatility,所以影响因素只有volatility,这时候,就只考虑做多低估的volatility的future做空类似的高估的volatility的future。而不用担心受到lta和gamma的影响了。策略四实际就是互换,用现在的波动换将来的波动率,这个好理解。 请问这种主观题考察概率大吗如果考到的话只写出四个路径的名称能得分吗?实在太多了而且考试的时候可能来不及写。。

2024-08-01 07:47 2 · 回答

NO.PZ2019122802000017问题如下Sushil Wallais the chief investment officer of a large pension fun Wallawants to increase the pension funs allocation to hee fun anrecently met with three hee funmanagers. These hee fun focus on the following strategies:Hee FunSpecialist—Follows relative value volatility arbitragescrithree paths for implementing the strategy of Hee FunA. Hee FunA’s volatility trang strategy cimplementefollowing multiple paths. One path is through simple exchange-traoptions. The maturity of suoptions typically exten to no more thtwo years. In terms of expiry, the longer-teoptions will have more absolute exposure to volatility levels thshorter-teoptions, but the shorter-teoptions will exhibit more lta sensitivity to prichanges.A secon similpath is to implement the volatility trang strategy using OTC options. In this case, the tenor anstrike prices of the options ccustomize The tenor of expiry tes cthen extenbeyonwhis available with exchange-traoptions.A thirpath is to use VIX futures or options on VIX futures a wto more explicitly express a pure volatility view without the neefor constant lta heing of equity put or call for isolating the volatility exposure.A fourth path for implementing a volatility trang strategy woulto purchase OTC volatility swor a varianswfrom a cretworthy counterparty. A volatility swis a forwarcontraon future realizeprivolatility. Similarly, a varianswis a forwarcontraon future realizeprivariance, where varianis the square of volatility. Both volatility anvarianswaps provi “pure” exposure to volatility alone, unlike stanrzeoptions in whithe volatility exposure pen on the priof the unrlying asset anmust isolateanextractevia lta heing.首先只要Specialist— relative value volatility arbitrage,都是short波动率低,long波动率高的,进行套利。这四种都是,只是这四种都有各自的特点,首先就是策略一和策略二都受到lta和gamma的影响(所以要想办法对冲掉),策略三和四不受影响。策略一是通过简单的交易所交易期权。这类期权的到期时间一般不超过两年。从到期日来看,期限较长的期权比期限较短的期权对波动率水平的绝对风险敞口更大,所以是long长期short短期,但期限较短的期权对价格变化表现出更多的lta敏感性,所以对冲掉lta。策略二类似的路径是利用场外期权实施波动率交易策略。在这种情况下,期权的期限和行权价格可以自定义。然后,到期日的期限可以扩展到交易所交易的期权之外。但是会有counterpart risk的风险。对冲掉lta和gamma方法,lta对冲很简答,lta是一阶导,说白了就是同涨同跌,如果lta是,1,那就是stock涨了10,option涨了10,有十张call就做空10股stock,如果是-1,比如put,有十张put,那就做多10股stock。至于gamma,假设100股C股票涨了1%,然后*100股,就涨了100对吧,而买的这个C股票的call因为gamma的原因没有百分百的对冲,涨了1.2%,对应就是涨了120对吧。那现在多了120-100=20,就卖空20股C股票,这样就100%的对冲了。 relative value volatility arbitrage实际就是套利,赚取sprea做空高估volatility的,做多类似的低估volatility。但是有的(比如策略一和策略二,的期权)实施这个策略会有lta和gamma的影响(大概说下就是期权会有方向性的lta和二阶导的gamma等因素影响),但是我不想受除了volatility以外的因素影响,就需要借助工具对冲掉,对吧,但是一般都不能完全对冲干净其它影响因素,这样套利就很受影响。这里策略三 实际VIX Inx futures (or options on VIX futures),本质就是一个专门交易volatility的inx的future或者volatility的inx的future的期权(有点绕口,可以理解就是前面的future为底层资产的option)。因为只交易volatility,所以影响因素只有volatility,这时候,就只考虑做多低估的volatility的future做空类似的高估的volatility的future。而不用担心受到lta和gamma的影响了。策略四实际就是互换,用现在的波动换将来的波动率,这个好理解。 why3,4不受lta,gamma影响,谢谢。如题,请详解,谢谢

2024-07-20 20:19 1 · 回答

NO.PZ2019122802000017 问题如下 Sushil Wallais the chief investment officer of a large pension fun Wallawants to increase the pension funs allocation to hee fun anrecently met with three hee funmanagers. These hee fun focus on the following strategies:Hee FunSpecialist—Follows relative value volatility arbitragescrithree paths for implementing the strategy of Hee Fun Hee FunA’s volatility trang strategy cimplementefollowing multiple paths. One path is through simple exchange-traoptions. The maturity of suoptions typically exten to no more thtwo years. In terms of expiry, the longer-teoptions will have more absolute exposure to volatility levels thshorter-teoptions, but the shorter-teoptions will exhibit more lta sensitivity to prichanges.A secon similpath is to implement the volatility trang strategy using OTC options. In this case, the tenor anstrike prices of the options ccustomize The tenor of expiry tes cthen extenbeyonwhis available with exchange-traoptions.A thirpath is to use VIX futures or options on VIX futures a wto more explicitly express a pure volatility view without the neefor constant lta heing of equity put or call for isolating the volatility exposure.A fourth path for implementing a volatility trang strategy woulto purchase OTC volatility swor a varianswfrom a cretworthy counterparty. A volatility swis a forwarcontraon future realizeprivolatility. Similarly, a varianswis a forwarcontraon future realizeprivariance, where varianis the square of volatility. Both volatility anvarianswaps provi “pure” exposure to volatility alone, unlike stanrzeoptions in whithe volatility exposure pen on the priof the unrlying asset anmust isolateanextractevia lta heing.首先只要Specialist— relative value volatility arbitrage,都是short波动率低,long波动率高的,进行套利。这四种都是,只是这四种都有各自的特点,首先就是策略一和策略二都受到lta和gamma的影响(所以要想办法对冲掉),策略三和四不受影响。策略一是通过简单的交易所交易期权。这类期权的到期时间一般不超过两年。从到期日来看,期限较长的期权比期限较短的期权对波动率水平的绝对风险敞口更大,所以是long长期short短期,但期限较短的期权对价格变化表现出更多的lta敏感性,所以对冲掉lta。策略二类似的路径是利用场外期权实施波动率交易策略。在这种情况下,期权的期限和行权价格可以自定义。然后,到期日的期限可以扩展到交易所交易的期权之外。但是会有counterpart risk的风险。对冲掉lta和gamma方法,lta对冲很简答,lta是一阶导,说白了就是同涨同跌,如果lta是,1,那就是stock涨了10,option涨了10,有十张call就做空10股stock,如果是-1,比如put,有十张put,那就做多10股stock。至于gamma,假设100股C股票涨了1%,然后*100股,就涨了100对吧,而买的这个C股票的call因为gamma的原因没有百分百的对冲,涨了1.2%,对应就是涨了120对吧。那现在多了120-100=20,就卖空20股C股票,这样就100%的对冲了。 relative value volatility arbitrage实际就是套利,赚取sprea做空高估volatility的,做多类似的低估volatility。但是有的(比如策略一和策略二,的期权)实施这个策略会有lta和gamma的影响(大概说下就是期权会有方向性的lta和二阶导的gamma等因素影响),但是我不想受除了volatility以外的因素影响,就需要借助工具对冲掉,对吧,但是一般都不能完全对冲干净其它影响因素,这样套利就很受影响。这里策略三 实际VIX Inx futures (or options on VIX futures),本质就是一个专门交易volatility的inx的future或者volatility的inx的future的期权(有点绕口,可以理解就是前面的future为底层资产的option)。因为只交易volatility,所以影响因素只有volatility,这时候,就只考虑做多低估的volatility的future做空类似的高估的volatility的future。而不用担心受到lta和gamma的影响了。策略四实际就是互换,用现在的波动换将来的波动率,这个好理解。 请问一下讲义上的下面三个examples不属于path吗:Time-zone arbitrageCross-asset volatility trangOutright long volatility trars

2024-06-23 06:30 1 · 回答

NO.PZ2019122802000017 问题如下 Sushil Wallais the chief investment officer of a large pension fun Wallawants to increase the pension funs allocation to hee fun anrecently met with three hee funmanagers. These hee fun focus on the following strategies:Hee FunSpecialist—Follows relative value volatility arbitragescrithree paths for implementing the strategy of Hee Fun Hee FunA’s volatility trang strategy cimplementefollowing multiple paths. One path is through simple exchange-traoptions. The maturity of suoptions typically exten to no more thtwo years. In terms of expiry, the longer-teoptions will have more absolute exposure to volatility levels thshorter-teoptions, but the shorter-teoptions will exhibit more lta sensitivity to prichanges.A secon similpath is to implement the volatility trang strategy using OTC options. In this case, the tenor anstrike prices of the options ccustomize The tenor of expiry tes cthen extenbeyonwhis available with exchange-traoptions.A thirpath is to use VIX futures or options on VIX futures a wto more explicitly express a pure volatility view without the neefor constant lta heing of equity put or call for isolating the volatility exposure.A fourth path for implementing a volatility trang strategy woulto purchase OTC volatility swor a varianswfrom a cretworthy counterparty. A volatility swis a forwarcontraon future realizeprivolatility. Similarly, a varianswis a forwarcontraon future realizeprivariance, where varianis the square of volatility. Both volatility anvarianswaps provi “pure” exposure to volatility alone, unlike stanrzeoptions in whithe volatility exposure pen on the priof the unrlying asset anmust isolateanextractevia lta heing.首先只要Specialist— relative value volatility arbitrage,都是short波动率低,long波动率高的,进行套利。这四种都是,只是这四种都有各自的特点,首先就是策略一和策略二都受到lta和gamma的影响(所以要想办法对冲掉),策略三和四不受影响。策略一是通过简单的交易所交易期权。这类期权的到期时间一般不超过两年。从到期日来看,期限较长的期权比期限较短的期权对波动率水平的绝对风险敞口更大,所以是long长期short短期,但期限较短的期权对价格变化表现出更多的lta敏感性,所以对冲掉lta。策略二类似的路径是利用场外期权实施波动率交易策略。在这种情况下,期权的期限和行权价格可以自定义。然后,到期日的期限可以扩展到交易所交易的期权之外。但是会有counterpart risk的风险。对冲掉lta和gamma方法,lta对冲很简答,lta是一阶导,说白了就是同涨同跌,如果lta是,1,那就是stock涨了10,option涨了10,有十张call就做空10股stock,如果是-1,比如put,有十张put,那就做多10股stock。至于gamma,假设100股C股票涨了1%,然后*100股,就涨了100对吧,而买的这个C股票的call因为gamma的原因没有百分百的对冲,涨了1.2%,对应就是涨了120对吧。那现在多了120-100=20,就卖空20股C股票,这样就100%的对冲了。 relative value volatility arbitrage实际就是套利,赚取sprea做空高估volatility的,做多类似的低估volatility。但是有的(比如策略一和策略二,的期权)实施这个策略会有lta和gamma的影响(大概说下就是期权会有方向性的lta和二阶导的gamma等因素影响),但是我不想受除了volatility以外的因素影响,就需要借助工具对冲掉,对吧,但是一般都不能完全对冲干净其它影响因素,这样套利就很受影响。这里策略三 实际VIX Inx futures (or options on VIX futures),本质就是一个专门交易volatility的inx的future或者volatility的inx的future的期权(有点绕口,可以理解就是前面的future为底层资产的option)。因为只交易volatility,所以影响因素只有volatility,这时候,就只考虑做多低估的volatility的future做空类似的高估的volatility的future。而不用担心受到lta和gamma的影响了。策略四实际就是互换,用现在的波动换将来的波动率,这个好理解。 这道题目答案这么长 我如果只写1.exchangetraoption2.OTC option3.Swap能得分吗? 如果不是这题的得分Bullet Points在哪

2024-06-16 21:58 2 · 回答

NO.PZ2019122802000017 问题如下 Sushil Wallais the chief investment officer of a large pension fun Wallawants to increase the pension funs allocation to hee fun anrecently met with three hee funmanagers. These hee fun focus on the following strategies:Hee FunSpecialist—Follows relative value volatility arbitragescrithree paths for implementing the strategy of Hee Fun Hee FunA’s volatility trang strategy cimplementefollowing multiple paths. One path is through simple exchange-traoptions. The maturity of suoptions typically exten to no more thtwo years. In terms of expiry, the longer-teoptions will have more absolute exposure to volatility levels thshorter-teoptions, but the shorter-teoptions will exhibit more lta sensitivity to prichanges.A secon similpath is to implement the volatility trang strategy using OTC options. In this case, the tenor anstrike prices of the options ccustomize The tenor of expiry tes cthen extenbeyonwhis available with exchange-traoptions.A thirpath is to use VIX futures or options on VIX futures a wto more explicitly express a pure volatility view without the neefor constant lta heing of equity put or call for isolating the volatility exposure.A fourth path for implementing a volatility trang strategy woulto purchase OTC volatility swor a varianswfrom a cretworthy counterparty. A volatility swis a forwarcontraon future realizeprivolatility. Similarly, a varianswis a forwarcontraon future realizeprivariance, where varianis the square of volatility. Both volatility anvarianswaps provi “pure” exposure to volatility alone, unlike stanrzeoptions in whithe volatility exposure pen on the priof the unrlying asset anmust isolateanextractevia lta heing.首先只要Specialist— relative value volatility arbitrage,都是short波动率低,long波动率高的,进行套利。这四种都是,只是这四种都有各自的特点,首先就是策略一和策略二都受到lta和gamma的影响(所以要想办法对冲掉),策略三和四不受影响。策略一是通过简单的交易所交易期权。这类期权的到期时间一般不超过两年。从到期日来看,期限较长的期权比期限较短的期权对波动率水平的绝对风险敞口更大,所以是long长期short短期,但期限较短的期权对价格变化表现出更多的lta敏感性,所以对冲掉lta。策略二类似的路径是利用场外期权实施波动率交易策略。在这种情况下,期权的期限和行权价格可以自定义。然后,到期日的期限可以扩展到交易所交易的期权之外。但是会有counterpart risk的风险。对冲掉lta和gamma方法,lta对冲很简答,lta是一阶导,说白了就是同涨同跌,如果lta是,1,那就是stock涨了10,option涨了10,有十张call就做空10股stock,如果是-1,比如put,有十张put,那就做多10股stock。至于gamma,假设100股C股票涨了1%,然后*100股,就涨了100对吧,而买的这个C股票的call因为gamma的原因没有百分百的对冲,涨了1.2%,对应就是涨了120对吧。那现在多了120-100=20,就卖空20股C股票,这样就100%的对冲了。 relative value volatility arbitrage实际就是套利,赚取sprea做空高估volatility的,做多类似的低估volatility。但是有的(比如策略一和策略二,的期权)实施这个策略会有lta和gamma的影响(大概说下就是期权会有方向性的lta和二阶导的gamma等因素影响),但是我不想受除了volatility以外的因素影响,就需要借助工具对冲掉,对吧,但是一般都不能完全对冲干净其它影响因素,这样套利就很受影响。这里策略三 实际VIX Inx futures (or options on VIX futures),本质就是一个专门交易volatility的inx的future或者volatility的inx的future的期权(有点绕口,可以理解就是前面的future为底层资产的option)。因为只交易volatility,所以影响因素只有volatility,这时候,就只考虑做多低估的volatility的future做空类似的高估的volatility的future。而不用担心受到lta和gamma的影响了。策略四实际就是互换,用现在的波动换将来的波动率,这个好理解。 outright long options(exchange-traor OTC tra, buy option when volatility is unrvalue short option when volatioity is overvaluethis statergy cprovi versifier for long equity.using vix inx futures, long futures when volatility is expecteto increaseusing volatility swor varianswap, enter a payer swwhen volatility is expecteto increase

2024-01-20 16:13 1 · 回答