GSE Mortgage Performance Map

What you're looking at. The same loans behave very differently depending on where the borrower lives. CPR is how fast borrowers in a state prepay (refinance or sell); CDR is how fast loans there default. Darker states move faster. Geography shapes both — high-cost coastal states refinance differently than the Sun Belt, and local economies drive defaults — so a national average hides a lot. Switch the metric and coupon to see where the map lights up.