Mortgage rates were mostly unchanged Wednesday. This morning, the payroll firm ADP forecast a net gain of 187,000 private sector jobs in January, more than expected, ahead of Friday’s Employment Report. The data appeared to have little immediate impact on financial markets. The Mortgage Bankers Association weekly purchase activity index rose by 10%, while the refinancing index increased by 12%. Average reported 30-year fixed rates rose to 4.81%, not including fees. No other data will be released today.