Commercial banks and savings institutions gently nudged their valuations of mortgage servicing rights slightly higher in the third quarter as higher interest rates reduced prepayment expectations. A new Inside Mortgage Trends analysis of call reports shows banks put a fair market value of $36.17 billion on their MSR assets at the end of the third quarter. That works out to 0.93 percent of the principal balance of $3.879 trillion of loans serviced for others, up from ... [Includes one data chart]