Interest, Prejudgment, Interest Rate on Judgment on Mixed State and Federal Claims, 2, 6

When  a judgment is based on both state and federal claims, without any distinction between the claims, the district court has discretion to select a proper prejudgment interest rate, choosing between the fluctuating federal prejudgment interest rate and the rate provided by state law.  Here, the district court did not abuse its discretion by choosing the federal rate as plaintiff’s trial strategy had largely been guided by the federal claims.