I am looking into trading a short strangle strategy in FX and want trade 'securities', and not in futures or forex (for a specific personal reason). Does anybody trade these currency options (treated as options on securities) available on ISE? What has been your experience with liquidity, speed of fills etc? Australian dollar, ticker = AUX British pound, ticker = BPX Canadian dollar, ticker = CDD Euro, ticker = EUI Japanese yen, ticker = YUK thanks.