Decomposing Autocallable Swaps into Options and Barriers

Summary

The document raises a booking and modelling question about a basic autocallable swap with multiple observation dates and downside exposure. It describes a proposed decomposition into short digital calls at the observation dates and a long down-and-in put, then asks whether the autocall feature also requires an up-and-out barrier or a separate up-and-out call. The author favors including the barrier with the put and digitals but is uncertain about the extra call position.

No answer, payoff derivation, valuation method, or market evidence is provided, so the proposed decomposition is not established by the document. The discussion is useful as a prompt to distinguish a barrier condition from the option payoff it controls, but a reliable booking conclusion would require a precise term sheet, payoff analysis, and agreed modelling conventions. The text does not specify coupon terms, barrier levels, observation mechanics, or settlement details.

Key ideas

• The document frames an autocallable swap as a combination of observation-date digitals and downside put exposure.
• It asks whether the autocall condition should be represented by an up-and-out barrier.
• It questions whether an additional up-and-out call is needed in the booking decomposition.
• No derivation or answer is supplied, so the suggested positions remain unverified.

Tags

# Autocallables - valuation/modelling/booking


# Autocallables - valuation/modelling/booking












Recently heard a view on how one should model/book autocallable swaps (in its basic form where there is a series of observation dates on which the product autocalls and there is exposure to the downside). The general consensus around it seems to be that one obviously needs to book series of short digital calls, one for each observation date, and long down-and-in put option. To model/book the autocall feature, one also needs to have an up-and-out barrier, I believe. However, one view is that there needs to be an up-and-out call option booked, which doesn't seem to make much sense. I'd say one needs to book the up-and-out barrier together with the put option and the digitals but not with an extra call option. What are your thoughts?

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.