Prosper is lowering rates for higher credit quality borrowers and increasing rates in the lower credit quality segments; borrowers with loan ratings AA through C will see a rate decrease of as much as 79 basis points while borrower ratings D through HR could see an increase of as much as 74 basis points; in total, across all ratings, rates will be lower by approximately 39 basis points; Prosper says the rate changes are a result of the credit market environment, interest rate expectations and competition for consumer loans. Source