· 个股论点

利用$EWY期权定价错误,做多看涨期权以捕捉存储超级周期带来的维加扩张。

涉及标的:

中文翻译

我发布在“淋浴思考”频道的交易思路: 韩国指数波动率套利,并利用布莱克-斯科尔斯模型(Black-Scholes models)。 $EWY 的看涨期权似乎定价错误。 这是贝莱德(Blackrock)的韩国指数,主要由存储芯片(三星电子、SK海力士)构成。 该指数每日波动2-5%以上,尽管隐含波动率(IV)定价像普通指数,但过去一年仍上涨了136.25%。 三星波动大。SK海力士波动也大(例如估算65%-80%)。 但通过指数组合后的定价远低于低贝塔值的 $GOOGL (37.33%) 和 $AMZN (39.12%),约为32%的IV。 我观察 $EWY 一段时间,它确实看起来很波动。 至于定价,我猜测做市商(MMs)基于历史平均值(5-10年)定价IV,当时韩国指数完全持平。他们预期两年后的看涨期权会均值回归。 但这种波动应成为新常态,因为市场正在定价新的存储超级周期(例如 $TSM 从30% IV升至46.2% IV)。 看涨期权将从三星+SK海力士带动指数中受益。 主要好处是你无法从 $KORU 获得的维加(Vega)扩张。 你也无法像美国个股那样获得期权做市商的压盘效应,因为这是韩国的国家指数且期限较长。 简而言之:个别成分股SK海力士+三星具有高波动性。 它们基本上占指数的一半,但指数期权以低波动性定价,可能是因为基于5-10年的历史数据。 看涨期权将从维加扩张中受益,因为做市商的前瞻性波动率估算过于锚定于历史已实现波动率,而过去5-10年 $EWY 的历史波动率较低。

英文原文

Trade idea that I published to my shower thoughts channel: Korean Index volatility arbitrage and taking advantage of Black-Scholes models. $EWY long options seem mispriced. This is Blackrock's Korea Index, which is majority memory (Samsung Electronics, Sk Hynix). The stock swings 2-5+% a day, and is up 136.25% 1Y, despite priced like a normal index IV. Samsung is volatile. SK Hynix is volatile (eg. 65% - 80% est). But the combination of the two through the index is priced way less than both low beta $GOOGL (37.33%) and $AMZN (39.12%) at ~32% IV. I've been watching $EWY for a bit and it does look volatile. As for pricing my guess is MMs priced in IV based on historical averages (5-10 years), where the Korean index was completely flat. And were expecting calls 2 years out to revert to the mean. But this volatility should be the new norm as markets price in the new memory supercycle (eg. $TSM went from 30% IV to 46.2% IV). Long calls should benefit from both Samsung + Sk Hynix carrying the index. And the main benefit is vega expansion that you won't get from $KORU. You also can't get this option MM pinning like individual US stocks since this is Korea's national index and long term. TLDR: Individual components SK Hynix + Samsung are highly volatile. They're basically half of the index, but options in index are priced with low volatility, perhaps due to historical 5-10 year data. Long calls benefit from vega expansion that weren't priced in correctly as MM forward vol estimates are anchored too heavily on historical realized vol, which was low for $EWY over the past 5-10 years

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