With the end of Operation Twist's USD volatility repression, fading LTRO benefits, and various event risks (from elections to sovereign refinancings and bank downgrades/collateral calls) occurring, the gap between EURUSD implied volatility and European equity implied volatility is becoming excessive. FX volatility is extremely low (complacency high) but relative to equities it seems to offer a low-cost-long-vol bet on the chance of a risk-flare occurring. The last two times this has occurred (in the last year), EURUSD implied vol has rapidly caught up to equity's risk - why not third time the charm?
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Charts: Bloomberg