EX. 12(b)(i)
                                 CERTIFICATIONS

I, Carl G. Verboncoeur, President of Rydex Series Funds (the "Trust"), certify
that:

1. The Form N-CSR of the Trust (the "Report") fully complies with the
requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934;
and

2. The information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Trust.

A signed original of this written statement required by Section 906 has been
provided to the Trust and will be retained by the Trust and furnished to the
Securities and Exchange Commission or its staff upon request.


Dated: December 7, 2006

                                /s/ Carl G. Verboncoeur
                                -----------------------
                                Carl G. Verboncoeur
                                President



                                                                   EX. 12(b)(ii)
                                 CERTIFICATIONS

I, Nick Bonos, Vice President and Treasurer of Rydex Series Funds (the "Trust"),
certify that:

1. The Form N-CSR of the Trust (the "Report") fully complies with the
requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934;
and

2. The information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Trust.

A signed original of this written statement required by Section 906 has been
provided to the Trust and will be retained by the Trust and furnished to the
Securities and Exchange Commission or its staff upon request.


Dated: December 7, 2006

                                /s/ Nick Bonos
                                ----------------------------
                                Nick Bonos
                                Vice President and Treasurer