Quote from atticus:
I have a pure arb paying 10% weekly. Long the natural European outside binary range trade and short the outside via the synthetic. A retail exotics dealer against a listed vanilla straddle hedge or the aforementioned outside binary range.
If anyone here can decipher it and send me the maths I will hand them the arb.
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Smart! Basically you are telling the people that they will get the fish only if they know how to fish
Never traded such options before, but I thought to give it a try anyway.
I would try to do it by exploiting the property of put-call symmetry (for newbies this is not put-call parity) and the observation that a knock-out call should be synthetically equal to a vanilla put less an appropriate number of symmetically struck vanilla calls.
Am I on the right track?
Also in what you are asking for: Is there a skew, and is the interest the same for the two currencies? What I wrote above assumes (in my mind at least) no skew and zero cost of carry. Is this a source of your arb?
