# EDGAR Filing Document

**Accession Number:** 0000899148
**File Stem:** 0000913181-25-000340
**Filing Date:** 2025-12
**Character Count:** 9873
**Document Hash:** cd2944886cce5f61ba359511c7472bcb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000913181-25-000340.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0000913181-25-000340

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251201

**DATE AS OF CHANGE**: 20251201

**PERIOD START**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** RYDEX SERIES FUNDS
- **CENTRAL INDEX KEY:** 0000899148

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-07584
- **FILM NUMBER:** 251538207

**BUSINESS ADDRESS:**
- **STREET 1:** 702 KING FARM BOULEVARD
- **STREET 2:** SUITE 200
- **CITY:** ROCKVILLE
- **STATE:** MD
- **ZIP:** 20850
- **BUSINESS PHONE:** 301-296-5100

**MAIL ADDRESS:**
- **STREET 1:** 702 KING FARM BOULEVARD
- **STREET 2:** SUITE 200
- **CITY:** ROCKVILLE
- **STATE:** MD
- **ZIP:** 20850

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** RYDEX DYNAMIC FUNDS
- **DATE OF NAME CHANGE:** 20170712

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** RYDEX SERIES FUNDS
- **DATE OF NAME CHANGE:** 20000229

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** RYDEX SERIES TRUST
- **DATE OF NAME CHANGE:** 19930714

## Series and Classes Contracts Data

### Inverse S&P 500 Strategy Fund (Series ID: S000003692)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000010334 | Investor Class | RYURX           |
| C000010336 | Class A        | RYARX           |
| C000010337 | Class C        | RYUCX           |
| C000149024 | Class H        | RYUHX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** Rydex Series Funds

- **b. Investment Company Act file number:** 811-07584

- **c. CIK number of Registrant:** 0000899148

- **d. LEI of Registrant:** 5493004D62WV1EDNTU07

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 702 King Farm Blvd., Suite 200

  - **City:** Rockville

  - **State:** MD

  - **Foreign country:** US

  - **Zip / Postal Code:** 20850

  - **Telephone number:** 301-296-5100

**Item A.2. Information about the Series.**

- **a. Name of Series:** Inverse S&P 500 Strategy Fund

- **b. EDGAR series identifier (if any):** S000003692

- **c. LEI of Series:** 54930069SHUJKSI0T360

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2026-03-31

- **b. Date as of which information is reported:** 2025-09-30

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $38806164.48

**Total Liabilities:** $295008.35

**Net Assets:** $38511156.13

**Cash Not Reported:** $3554902.63

**Currency Risk Metrics (dv01):**

- 

**Credit Spread Risk - Investment Grade (dv01):**

- **3-Month:** 80.61290790 | **1-Year:** 1170.56344620 | **5-Year:** 176.86323000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Credit Spread Risk - Non-Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000010334 | -1.59%               | -1.41%               | -2.94%               |
| Class ID C000010337 | -1.67%               | -1.50%               | -3.02%               |
| Class ID C000149024 | -1.61%               | -1.43%               | -2.96%               |
| Class ID C000010336 | -1.60%               | -1.43%               | -2.96%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-157.15                 | $-8191.52                                  |
| Month 2  | $37.07                   | $12081.90                                  |
| Month 3  | $-79.27                  | $7115.41                                   |

**Designated Index Information**

- **Index Name:** S&P 500 Index

- **Index Identifier:** SNP500

### Schedule of Portfolio Investments

| Name                                          | Title                                                                    | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Dreyfus Treasury Obligations C                | Dreyfus Treasury Obligations Cash Management Fund - Institutional Shares | CUSIP: N/A<br>LEI: 549300MKKM9KT7BF6329       | Long             | STIV             | RF                | US        |    240000 | NS      | $240000.00    | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| FEDERAL HOME LOAN BANK                        | Federal Home Loan Bank                                                   | CUSIP: 3130B6YW0<br>LEI: 2549001DPIFGXC1TOL40 | Long             | DBT              | USGSE             | US        |   1500000 | PA      | $1500027.00   | 3.90%             | 2026-01-09      | Floating      | 4.13%                 | No            |                  2 | On Loan: No      |
| BNP Paribas                                   | S&P 500 Index                                                            | CUSIP: N/A<br>LEI: R0MUWSFPU8MPRO8K5P83       | N/A              | DE               |  | US        |      -961 | NC      | $-48505.81    | -0.13%            |  |  |  | No            |                  2 | On Loan: No      |
| Guggenheim Partners Investment Management LLC | Guggenheim Strategy Fund II                                              | CUSIP: N/A<br>LEI: N/A                        | Long             | EC               | RF                | US        |    262625 | NS      | $6534112.84   | 16.97%            |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Mercantile Exchange                   | S&P 500 Index Mini Futures Contracts                                     | CUSIP: N/A<br>LEI: N/A                        | N/A              | DE               |  | US        |       -17 | NC      | $-40277.49    | -0.10%            |  |  |  | No            |                  1 | On Loan: No      |
| Barclays Bank plc                             | S&P 500 Index                                                            | CUSIP: N/A<br>LEI: G5GSEF7VJP5I7OUK5573       | N/A              | DE               |  | US        |      -897 | NC      | $-45300.31    | -0.12%            |  |  |  | No            |                  2 | On Loan: No      |
| TREASURY BILL                                 | U.S. Treasury Bills                                                      | CUSIP: 912797RC3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    241000 | PA      | $240648.45    | 0.62%             | 2025-10-14      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| Goldman Sachs International                   | S&P 500 Index                                                            | CUSIP: N/A<br>LEI: W22LROWP2IHZNBB6K528       | N/A              | DE               |  | US        |     -3045 | NC      | $-96048.60    | -0.25%            |  |  |  | No            |                  2 | On Loan: No      |
| J.P. MORGAN SECURITIES LLC                    | J.P. Morgan Securities LLC                                               | CUSIP: N/A<br>LEI: ZBUT11V806EZRVTWT807       | Long             | RA               | CORP              | US        |  11247738 | PA      | $11247737.93  | 29.21%            |  |  |  | No            |                  2 | On Loan: No      |
| TREASURY BILL                                 | U.S. Treasury Bills                                                      | CUSIP: 912797QZ3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   1020000 | PA      | $1011454.37   | 2.63%             | 2025-12-18      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| Guggenheim Partners Investment Management LLC | Guggenheim Ultra Short Duration Fund - Institutional Class               | CUSIP: 40169J523<br>LEI: N/A                  | Long             | EC               | RF                | US        |    426990 | NS      | $4299791.43   | 11.17%            |  |  |  | No            |                  1 | On Loan: No      |
| BOFA SECURITIES, INC.                         | BofA Securities, Inc.                                                    | CUSIP: N/A<br>LEI: 549300HN4UKV1E2R3U73       | Long             | RA               | CORP              | US        |   8093483 | PA      | $8093482.77   | 21.02%            |  |  |  | No            |                  2 | On Loan: No      |
| FEDERAL HOME LOAN BANK                        | Federal Home Loan Bank                                                   | CUSIP: 3130B7HP2<br>LEI: 2549001DPIFGXC1TOL40 | Long             | DBT              | USGSE             | US        |   2000000 | PA      | $2000298.00   | 5.19%             | 2026-07-20      | Floating      | 4.18%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2025-10-30

**Name of Applicant:** Rydex Series Funds

**Signature:** James Howley

**Name of Signer:** James Howley

**Title:** CFO