The top three mortgage lenders with the best rates this week are Navy Federal Credit Union, Citi Mortgage, and PenFed Credit Union, according to a survey conducted by Yahoo Finance. Lenders were ranked by annual percentage rate (APR), which includes lender fees. Expanded survey reveals new low-rate lenders Mortgage rates declined this week among most of the leading mortgage lenders evaluated by Yahoo Finance. Adding three new lenders to our survey also brought a change to our low-mortgage-rate leaderbo ...