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I’m guessing you are finding that your model overvalues Bermudan receiver options and probably undervalues Bermudan payer options. The rationale for this has more to do with supply and demand than theory. That’s because every time a callable bond is issued and swapped, dealers buy Bermudan receiver options, so there’s a huge supply. For Bermudan payers ...


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This question has partially already been answered here. Let's do a simple example to illustrate the idea though. Take a 5y Bermudan callable S/A USD bond. How would you reconstruct the multi-call feature using vanilla swaptions? Well, the issuer can call every 6 months so they're long a 6m4.5y swaption on the first call date. For the second call date they're ...


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