I can't edit my above comment anymore but going back to the original lecture in which I saw this he does specifically say that loans should be held to maturity

I can't edit my above comment anymore but going back to the original lecture in which I saw this he does specifically say that loans should be held to maturity by the issuer: https://youtu.be/gI86w6bSmS0?t=445 https://youtu.be/gI86w6bSmS0?t=445 Presumably to avoid exactly what happened in the sub-prime mortgage crisis :)