劉同學(xué)
2024-07-26 11:07buying a put option and selling a call option with respect to option time value decay,如果時(shí)間價(jià)值下降,那不是應(yīng)該說(shuō)明期權(quán)本身價(jià)值下降,那么售價(jià)應(yīng)該下降,所以買方和賣方都應(yīng)該獲利嗎?還是因?yàn)闀r(shí)間價(jià)值下降,然后出售和購(gòu)買價(jià)格都不變,然后賣方因?yàn)橐愿哂趦?nèi)在價(jià)值出售所以獲利,買方以原有價(jià)格購(gòu)買卻少獲得時(shí)間價(jià)值而增加成本?
所屬:CFA Level I > Derivatives 視頻位置 相關(guān)試題
來(lái)源: 視頻位置 相關(guān)試題
2個(gè)回答
Evian, CFA助教
2024-07-27 18:21
該回答已被題主采納
ヾ(?°?°?)??你好同學(xué),
Which of the following statements correctly describes an important distinction between the two strategies of buying a put option and selling a call option with respect to option time value decay?
A.Time value decay is a benefit to both option strategies.
B.Time value decay is a cost to both option strategies.
C.Time value decay is a benefit to selling a call option and a cost to buying a put option.
C is correct.
The time value component of an option premium declines toward zero as time passes toward the expiration date. A purchased option declines in value, all else equal, because of the time value decline. A sold option increases in value, all else equal, because of the time value decline. A is incorrect as time value decay is a cost to the purchased put option strategy, and B is incorrect as time value decay is a benefit to the sold option strategy.
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追答
Theta,希臘字母,衡量期權(quán)價(jià)值(內(nèi)在價(jià)值+時(shí)間價(jià)值)下降,因?yàn)闀r(shí)間流失(時(shí)間價(jià)值↓),期權(quán)處于價(jià)內(nèi)狀態(tài)的概率↓,所以期權(quán)價(jià)值↓。
期權(quán)本身(合約自身)價(jià)值下降,那么售價(jià)(雙方交易時(shí)認(rèn)同的市場(chǎng)價(jià)格)應(yīng)該下降
買方和賣方是否獲利,需要看期初合約價(jià)格和當(dāng)下合約價(jià)格的大小關(guān)系
只考慮時(shí)間價(jià)值下降
對(duì)long方不利,因?yàn)槭掷锏钠跈?quán)合約不值錢
對(duì)short方有利,因?yàn)槠诔跏盏狡跈?quán)費(fèi)之后,只要long方不行權(quán),期權(quán)費(fèi)就是自己的,short方希望快點(diǎn)到期T時(shí)刻,到手期權(quán)費(fèi),以及l(fā)ong方不行權(quán)
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追問(wèn)
所以我理解的對(duì)嗎
Bingo助教
2024-08-15 14:01
該回答已被題主采納
同學(xué)你好,
你說(shuō)的不對(duì),買方和賣方不可能均獲利,衍生品是零和游戲,怎么可能雙贏
以上回復(fù)說(shuō)過(guò)了
只考慮時(shí)間價(jià)值下降
對(duì)long方不利,因?yàn)槭掷锏钠跈?quán)合約不值錢
對(duì)short方有利,因?yàn)槠诔跏盏狡跈?quán)費(fèi)之后,只要long方不行權(quán),期權(quán)費(fèi)就是自己的,short方希望快點(diǎn)到期T時(shí)刻,到手期權(quán)費(fèi),以及l(fā)ong方不行權(quán)
