# EDGAR Filing Document

**Accession Number:** 0000899148
**File Stem:** 0000940400-26-023039
**Filing Date:** 2026-6
**Character Count:** 10689
**Document Hash:** 24156a785b586e748cb5e983d85bfd67
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940400-26-023039.hdr.sgml**: 20260601

**ACCESSION NUMBER**: 0000940400-26-023039

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260601

**DATE AS OF CHANGE**: 20260601

**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:** 261048952

**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 BOULEVARD

  - **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:** 2026-03-31

**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:** $64928887.64

**Total Liabilities:** $1419921.22

**Net Assets:** $63508966.42

**Cash Not Reported:** $6604642.85

**Currency Risk Metrics (dv01):**

- 

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

- **3-Month:** 97.05246630 | **1-Year:** 1242.30036030 | **5-Year:** 368.54234870 | **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 C000149024 | -0.96%               | 1.18%                | 5.36%                |
| Class ID C000010336 | -0.94%               | 1.16%                | 5.36%                |
| Class ID C000010334 | -0.92%               | 1.19%                | 5.38%                |
| Class ID C000010337 | -1.01%               | 1.11%                | 5.29%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $0.00                    | $12516.23                                  |
| Month 2  | $0.00                    | $-6145.04                                  |
| Month 3  | $25.62                   | $-39143.10                                 |

**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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Guggenheim Funds Trust                             | Guggenheim Ultra Short Duration Fund                          | CUSIP: 40169J523<br>LEI: 54930033G24U3UGWK691 | Long             | EC               | RF                | US        |    426990 | NS      | $4291251.63   | 6.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Federal Home Loan Banks                            | FHLBDN 0 04/17/26                                             | CUSIP: 313385VR4<br>LEI: 2549001DPIFGXC1TOL40 | Long             | DBT              | USGSE             | US        |   5000000 | PA      | $4991905.00   | 7.86%             | 2026-04-17      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| Federal Home Loan Banks                            | FHLB F 07/20/26 0000                                          | CUSIP: 3130B7HP2<br>LEI: 2549001DPIFGXC1TOL40 | Long             | DBT              | USGSE             | US        |   2000000 | PA      | $2000244.00   | 3.15%             | 2026-07-20      | Floating      | 3.68%                 | No            |                  2 | On Loan: No      |
| United States Treasury Bills                       | B 0 04/14/26                                                  | CUSIP: 912797TH0<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   5000000 | PA      | $4993453.06   | 7.86%             | 2026-04-14      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| Guggenheim Strategy Funds Trust                    | Guggenheim Strategy Fund II                                   | CUSIP: 40168Q205<br>LEI: 5493007THUTJ3GMETL84 | Long             | EC               | RF                | US        |    262625 | NS      | $6497345.32   | 10.23%            |  |  |  | No            |                  1 | On Loan: No      |
| Federal Home Loan Banks                            | FHLBDN 0 05/13/26                                             | CUSIP: 313385WT9<br>LEI: 2549001DPIFGXC1TOL40 | Long             | DBT              | USGSE             | US        |   3000000 | PA      | $2987295.00   | 4.70%             | 2026-05-13      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED | MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED TRI PARTY  | CUSIP: 000000000<br>LEI: 8NAV47T0Y26Q87Y0QP81 | Long             | RA               | CORP              | US        |   3817750 | PA      | $3817749.51   | 6.01%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury Bills                       | B 0 04/02/26                                                  | CUSIP: 912797SD0<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20000000 | PA      | $19997994.32  | 31.49%            | 2026-04-02      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| J.P. MORGAN SECURITIES LLC                         | J.P. MORGAN SECURITIES LLC TRI PARTY                          | CUSIP: 000000000<br>LEI: ZBUT11V806EZRVTWT807 | Long             | RA               | CORP              | US        |   4200971 | PA      | $4200971.47   | 6.61%             |  |  |  | No            |                  2 | On Loan: No      |
| CHICAGO MERCANTILE EXCHANGE INC.                   | E-mini S&P 500 Futures, Jun-2026,ETH                          | CUSIP: 000000000<br>LEI: SNZ2OJLFK8MNNCLQOF39 | N/A              | DE               | CORP              | US        |       -55 | NC      | $251844.09    | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| GOLDMAN SACHS & CO. LLC                            | TRS S&P 500 INDEX                                             | CUSIP: 000000000<br>LEI: FOR8UP27PHTHYVLBNG30 | N/A              | DE               | CORP              | US        |         1 | NC      | $93138.57     | 0.15%             |  |  |  | No            |                  2 | On Loan: No      |
| BARCLAYS BANK PLC                                  | TRS S&P 500 INDEX                                             | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DE               | CORP              | GB        |         1 | NC      | $107537.89    | 0.17%             |  |  |  | No            |                  2 | On Loan: No      |
| Federal Home Loan Banks                            | FHLBDN 0 04/06/26                                             | CUSIP: 313385VE3<br>LEI: 2549001DPIFGXC1TOL40 | Long             | DBT              | USGSE             | US        |   2400000 | PA      | $2398790.00   | 3.78%             | 2026-04-06      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| BNP PARIBAS                                        | TRS S&P 500 INDEX                                             | CUSIP: 000000000<br>LEI: R0MUWSFPU8MPRO8K5P83 | N/A              | DE               | CORP              | FR        |         1 | NC      | $-254038.06   | -0.40%            |  |  |  | No            |                  2 | On Loan: No      |
| Dreyfus Treasury Obligations Cash Management       | Dreyfus Treasury Obligations Cash Management TREASURY INSTNAL | CUSIP: 261908107<br>LEI: 549300MKKM9KT7BF6329 | Long             | STIV             | RF                | US        |    115682 | NS      | $115682.07    | 0.18%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-06-01

**Name of Applicant:** Rydex Series Funds

**Signature:** James Howley

**Name of Signer:** James Howley

**Title:** Chief Financial Officer