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FxWirePro: Monetising USD/JPY at between 118 and 125 in six months while mitigating short gamma risk with leveraging effect

As we do not expect the USDJPY to exceed 126 (multiyear double top since 2002), we prefer for a call spread ratio 1x1.5 instead of vanilla structures, such that the topside breakeven is at this level. Shorting volatility means negative convexity, and investors would thus suffer in terms of mark-to-market if USDJPY gains were to accelerate early.

While you could see positive hedging bids for USDJPY in 3m risk reversals and 2m IV skews are evidencing mounting hedging interests for downside risks (while articulating). Hence, even the underlying pair keeps dragging it drags maximum up to above stated levels within a span of 3m tenors.

As a result, on hedging grounds, we advocate buying USDJPY 6m call spread 1x1.5 strikes 118/120.5 (at spot ref: 116.324).

Trade risks: USDJPY above 125 in six months. USDJPY acceleration beyond 118 after the first two months would hurt the mark-to-market of the strategy. Investors face unlimited losses if the USDJPY trades above 125 at the 6m expiry.

We mitigate that risk by selecting a 6m expiry, which reduces the negative gamma compared to a shorter expiry and fits the idea of a gradual appreciation. However, lengthening the maturity would not by itself fully prevent the risks inherent to a short gamma profile.

So we pick sufficiently OTM strikes to protect the trade against a two-month move to 118 and a four-month to 122. These breakeven levels increase if the implied volatility falls.

All in all, the trade is profitable if the USDJPY trades between 118 and 125 in six months and will generate a maximal leverage at the 120.5 strike.

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2017-04-27 10:34:50
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