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张同学2022-05-29 17:53:15

Tryon is long several equity positions based on event-driven ideas that, over the next few quarters, are expected to have double-digit returns. He is concerned, however, that the equity market may decline as a result of lower corporate earnings. He believes investors are complacent as reflected in the historically low level of the volatility index (VIX). He wants to establish volatility exposure as a tail hedge for his holdings and notices the VIX futures curve is in contango. Tryon evaluates three potential trades to establish his hedge: Trade 1: Go long back-end month futures contracts on the VIX Index, with a gross notional equal to the portfolio market value. Trade 2: Sell a rolling series of out-of-the-money put options on VIX futures. Trade 3: Go long a variance swap, with vega notional equal to the potential equity portfolio loss. Which trade is Tryon most likely to implement to establish his equity market hedge?

回答(1)

Chris Lan2022-05-30 13:32:14

同学您好
vega notional是指方差互换合约中,波动上升一个单位,方差互换合约多头赚多少钱。这里担心的是波动上升,导致资产价格下降。因此波动上升后,我们进入方差互换多头,赚的钱,正好和我预期组合损失的金额一样,这样也就对冲了我们组合的风险。
他这里对冲的是预期的损失,也就是说他可以预期一下,如果波动上升1%,组合预期会损失多少金额,那么variance swap的vega notional就可以照这个值来设定。

由于VIX curve本身是升水的,因此当我们做为VIX 多头时,会随着VIX 期货离到期时间越来越近,而价格越来越低,所以VIX只要做多头,就会有损失。另外像交易2的说的不断rolling VIX futures也是一样的原因。

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