April 23, 2019
Valerie Lithotomos
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
| Re: | MML Series Investment Fund (the “Registrant”) |
1933 Act File No. 2-39334
1940 Act File No. 811-02224
Comments received for PEA No. 106 filed on March 1, 2019
Dear Ms. Lithotomos:
Below is a summary of the comments I received from you on April 9, 2019 regarding the above-mentioned Registrant, together with our responses. I appreciate the time you took to carefully review these documents and have tried to address your comments. I would greatly appreciate your contacting me at 860-562-2130 as soon as possible if you have any further questions or comments. Thank you.
Prospectus
| 1) | Comment: Please confirm that you will be updating the December 31, 2017 financial information currently residing in the Prospectus to December 31, 2018 financial information when you file the 485BPOS. |
Response: We confirm that the upcoming 485BPOS will contain updated financial information for December 31, 2018.
| 2) | Comment: Please confirm that the only new subadviser being added to the Registrant’s filing this year is Boston Partners Global Investors, Inc. (“Boston Partners”) |
Response: We confirm that Boston Partners is the only new subadviser for this filing.
SAI
| 1) | Comment: Please confirm that you do not think that any of the disclosure for Boston Partners currently residing in the Statement of Additional Information (“SAI”) beginning on page B-187 under the headingConflicts of Interest in the section titledAppendix C – Additional Portfolio Manager Information should be moved to the Prospectus. |
Response: We confirm that we do not think that any of this disclosure should be moved to the Prospectus.
Very truly yours,
/s/ Andrew M. Goldberg
Andrew M. Goldberg
Vice President, Secretary, and Chief Legal Officer, MML Series Investment Fund
Lead Counsel, Investment Adviser & Mutual Funds, Massachusetts Mutual Life Insurance Company
