A Super Sinker is a term maturity in a housing mortgage bond issue. These will be the first bonds to be called from the proceeds of prepaid mortgages. While it is likely, it is not guaranteed that a super sinker will be called. The result is that the bonds are priced as a long term bond, but most likely will be only held for a short period of time. It is a way to get a higher yield for a short term bond.
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