The “winner-winner, winner-loser, gone” methodology allows tests for short-term performance persistence for government and corporate fixed income mutual funds from 1990 to 1999. Persistence occurs when “winner” (loser) funds remain “winner” (loser) funds. If intermediate-term (long-term) bond returns are higher than long-term (intermediate-term) bond returns for successive years, the z-statistic is positive. Persistence is negative in the opposite case, and the pattern holds for longer lag periods. Statistical significance and consistency between the sign of persistence and bond returns indicates persistent returns on bond funds, but the nature of persistence is driven by changes in interest rates.