Depends on the definition. The wikipedia editors think it is: https://en.wikipedia.org/wiki/Derivative_%28finance%29#Mortgage-backed_securities https://en.wiki

Depends on the definition. The wikipedia editors think it is: https://en.wikipedia.org/wiki/Derivative_%28finance%29#Mortgage-backed_securities https://en.wikipedia.org/wiki/Derivative_%28finance%29#Mortg...