Filed by Federated MDT Series

Pursuant to Rule 425 under the Securities Act of 1933 and filed pursuant to Rule
14a-6 of the Securities Act of 1934

Subject Company:  MDT Funds
Commission File No. 811-21904





                                                            November 27,  2006


                         IMPORTANT NOTICE TO SHAREHOLDERS

Dear MDT Shareholder:

We urgently need your assistance. This letter has been sent to you because you
have not yet voted a proxy for the 2006 Special Meeting of Shareholders.

YOUR VOTE IS EXTREMELY IMPORTANT TO US, NO MATTER HOW MANY SHARES YOU OWN. YOUR
MDT FUND IS COMPRISED OF MANY ACCOUNTS AND EVERY ONE OF THEM HAS A DIRECT IMPACT
ON THE OUTCOME OF THE PROXY VOTE. PLEASE VOTE TODAY!

The adjourned Special Meeting of Shareholders scheduled for December 8th is now
only days away and your fund still has not received the necessary votes to pass
the proposals at the Special Meeting. Your fund is less than 6% away from
obtaining the required shareholder approval.  WE NEED YOUR VOTE!

             PLEASE DO NOT DELAY AND CAST YOUR CRITICAL VOTE TODAY.

Another  copy  of  your  ballot(s)  has  been enclosed with this letter for your
convenience.  Should you have any questions  regarding  the  proposal or to vote
your  shares  by  phone, please call this toll-free number 1-800-499-8541.   The
following voting options have been set up for your convenience.

         1. VOTE BY  TELEPHONE.  You may cast your vote by calling our toll-free
            proxy hotline  at  1-800-499-8541.  Representatives are available to
            record your vote Monday  through  Friday  9:00  a.m.  to  10:00 p.m.
            Eastern Time.

         2. VOTE  THROUGH  THE INTERNET.   You may cast your vote anytime  using
            the Internet by  logging  on  to www.myproxyonline.com and following
            the instructions.

         3. VOTE BY TOUCH-TONE PHONE.  You may cast your vote anytime by calling
            1-866-458-9840 and following the instructions.

         4. VOTE BY MAIL.  You may cast your vote by signing, dating and mailing
            the enclosed proxy ballot(s) in  the postage-prepaid return envelope
            provided.  If convenient for you,  PLEASE  utilize  one of the first
            three options above to ensure that your response is received in time
            for the Special Meeting on December 8, 2006.

Again, please do not hesitate to CALL TOLL-FREE 1-800-499-8541 if  you  have any
questions  regarding  this  matter.  PLEASE vote today!  If you have voted since
this letter was mailed we thank you for your vote.

Thank you for your assistance with this important matter.

Sincerely,

/s/ R. Schorr Berman
R. Schorr Berman
President, MDT Funds

                                                                REG




Federated MDT Series ("Federated") (ICA No. 811-21904), filed a proxy
statement/prospectus and other relevant documents concerning the planned
transactions with the United States Securities and Exchange Commission (the
"SEC").  INVESTORS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER
DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE PLANNED TRANSACTIONS, OR
INCORPORATED BY REFERENCE INTO THE PROXY STATEMENT/PROSPECTUS, BECAUSE THEY
CONTAIN IMPORTANT INFORMATION ABOUT THE TRANSACTIONS, AND RELATED MATTERS.
Investors can obtain these documents free of charge at the SEC Web site
(www.sec.gov).  In addition, documents filed with the SEC by Federated are
available free of charge at 1-800-341-7400 or FEDERATEDINVESTORS.COM.




Filed by Federated MDT Series

Pursuant to Rule 425 under the Securities Act of 1933 and filed pursuant to Rule
14a-6 of the Securities Act of 1934

Subject Company:  MDT Funds
Commission File No. 811-21904




                                                              November 27, 2006


                         IMPORTANT NOTICE TO SHAREHOLDERS

Dear MDT Shareholder:

We urgently need your assistance. This letter has been sent to you because you
have not yet voted a proxy for the 2006 Special Meeting of Shareholders.

YOUR VOTE IS EXTREMELY IMPORTANT TO US, NO MATTER HOW MANY SHARES YOU OWN. YOUR
MDT FUND IS COMPRISED OF MANY ACCOUNTS AND EVERY ONE OF THEM HAS A DIRECT IMPACT
ON THE OUTCOME OF THE PROXY VOTE. PLEASE VOTE TODAY!

The adjourned Special Meeting of Shareholders scheduled for December 8th is now
only days away and your fund still has not received the necessary votes to pass
the proposals at the Special Meeting. Your fund is less than 6% away from
obtaining the required shareholder approval.  WE NEED YOUR VOTE!

             PLEASE DO NOT DELAY AND CAST YOUR CRITICAL VOTE TODAY.

Another copy of your ballot(s)  has  been  enclosed  with  this  letter for your
convenience.  Should you have any questions regarding the proposal  or  to  vote
your  shares  by  phone,  please call this toll-free number 1-800-499-8541.  The
following voting options have been set up for your convenience.

         5. VOTE BY TELEPHONE.   You may cast your vote by calling our toll-free
            proxy hotline at 1-800-499-8541.   Representatives  are available to
            record  your  vote  Monday  through  Friday 9:00 a.m. to 10:00  p.m.
            Eastern Time.

         6. VOTE THROUGH THE INTERNET.   You may cast  your  vote  anytime using
            the  Internet  by logging on to www.proxyvote.com and following  the
            instructions.

         7. VOTE BY TOUCH-TONE PHONE.  You may cast your vote anytime by calling
            the toll-free number found on the enclosed proxy ballot(s).

         8. VOTE BY MAIL.  You may cast your vote by signing, dating and mailing
            the enclosed proxy  ballot(s) in the postage-prepaid return envelope
            provided.  If convenient  for  you,  PLEASE utilize one of the first
            three options above to ensure that your response is received in time
            for the Special Meeting on December 8, 2006.

Again, please do not hesitate to CALL TOLL-FREE 1-800-499-8541  if  you have any
questions  regarding  this matter.  PLEASE vote today!  If you have voted  since
this letter was mailed we thank you for your vote.

Thank you for your assistance with this important matter.

Sincerely,



/s/ R. Schorr Berman
R. Schorr Berman
President, MDT Funds

                                                                NOBO




Federated MDT Series ("Federated") (ICA No. 811-21904), filed a proxy
statement/prospectus and other relevant documents concerning the planned
transactions with the United States Securities and Exchange Commission (the
"SEC").  INVESTORS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER
DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE PLANNED TRANSACTIONS, OR
INCORPORATED BY REFERENCE INTO THE PROXY STATEMENT/PROSPECTUS, BECAUSE THEY
CONTAIN IMPORTANT INFORMATION ABOUT THE TRANSACTIONS, AND RELATED MATTERS.
Investors can obtain these documents free of charge at the SEC Web site
(www.sec.gov).  In addition, documents filed with the SEC by Federated are
available free of charge at 1-800-341-7400 or FEDERATEDINVESTORS.COM.




Filed by Federated MDT Series

Pursuant to Rule 425 under the Securities Act of 1933 and filed pursuant to Rule
14a-6 of the Securities Act of 1934

Subject Company:  MDT Funds
Commission File No. 811-21904





                                                                  November 27,
                                                              2006


                         IMPORTANT NOTICE TO SHAREHOLDERS

Dear MDT Shareholder:

We urgently need your assistance.  This letter has been sent to you because you
have not yet voted a proxy for the 2006 Special Meeting of Shareholders.

YOUR VOTE IS EXTREMELY IMPORTANT TO US, NO MATTER HOW MANY SHARES YOU OWN. YOUR
MDT FUND IS COMPRISED OF MANY ACCOUNTS AND EVERY ONE OF THEM HAS A DIRECT IMPACT
ON THE OUTCOME OF THE PROXY VOTE. PLEASE VOTE TODAY!

The adjourned Special Meeting of Shareholders scheduled for December 8th is now
only days away and your fund still has not received the necessary votes to pass
the proposals at the Special Meeting. Your fund is less than 6% away from
obtaining the required shareholder approval.  WE NEED YOUR VOTE!

             PLEASE DO NOT DELAY AND CAST YOUR CRITICAL VOTE TODAY.

Another copy of your ballot(s)  has  been  enclosed  with  this  letter for your
convenience.  Should you have any questions regarding the proposal  please  call
this  toll-free  number  1-800-499-8541.  The following voting options have been
set up for your convenience.

         9. VOTE THROUGH THE  INTERNET.    You  may cast your vote anytime using
            the Internet by logging on to www.proxyvote.com  and  following  the
            instructions.

         10.VOTE BY TOUCH-TONE PHONE.  You may cast your vote anytime by calling
            the toll-free number found on the enclosed proxy ballot(s).

         11.VOTE BY MAIL.  You may cast your vote by signing, dating and mailing
            the  enclosed proxy ballot(s) in the postage-prepaid return envelope
            provided.   If  convenient  for you, PLEASE utilize one of the first
            two options above to ensure that  your  response is received in time
            for the Special Meeting on December 8, 2006.

Again, please do not hesitate to CALL TOLL-FREE 1-800-499-8541  if  you have any
questions  regarding  this matter.  PLEASE vote today!  If you have voted  since
this letter was mailed we thank you for your vote.

Thank you for your assistance with this important matter.

Sincerely,



/s/ R. Schorr Berman
R. Schorr Berman
President, MDT Funds

                                                                OBO


Federated MDT Series ("Federated") (ICA No. 811-21904), filed a proxy
statement/prospectus and other relevant documents concerning the planned
transactions with the United States Securities and Exchange Commission (the
"SEC").  INVESTORS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER
DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE PLANNED TRANSACTIONS, OR
INCORPORATED BY REFERENCE INTO THE PROXY STATEMENT/PROSPECTUS, BECAUSE THEY
CONTAIN IMPORTANT INFORMATION ABOUT THE TRANSACTIONS, AND RELATED MATTERS.
Investors can obtain these documents free of charge at the SEC Web site
(www.sec.gov).  In addition, documents filed with the SEC by Federated are
available free of charge at 1-800-341-7400 or FEDERATEDINVESTORS.COM.