Servicing values continue their rather bumpy rise from their June 2020 low. This seems to be driven by the facts that: prepay speeds have plummeted; mortgage rates have risen substantially; and the population of outstanding loans has much lower than market coupons (average of 3.7%).Servicing values continue their rather bumpy rise from their June 2020 low. This seems to be driven by the facts that: prepay speeds have plummeted; mortgage rates have risen substantially; and the population of outstanding loans has much lower than market coupons (average of 3.7%).