MML Barings Short-Duration Bond Fund Class I MSTZX Strategy

The investment seeks to achieve a high total rate of return primarily from current income while minimizing fluctuations in capital values by investing primarily in a diversified portfolio of short-term investment grade fixed income securities. The fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in investment grade fixed income securities (rated Baa3 or higher by Moody's, BBB- or higher by Standard & Poor's or the equivalent by any NRSRO, or, if unrated, determined to be of comparable quality by the sub-adviser).