# EDGAR Filing Document

**Accession Number:** 0000899148
**File Stem:** 0000940400-26-023167
**Filing Date:** 2026-6
**Character Count:** 14421
**Document Hash:** c0d6c4f4e41e9b32c6a278829f083837
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000940400-26-023167.hdr.sgml**: 20260601

**ACCESSION NUMBER**: 0000940400-26-023167

**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:** 261049269

**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

### Energy Services Fund (Series ID: S000003801)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000010590 | Investor Class | RYVIX           |
| C000010591 | Class H        | RYVAX           |
| C000010592 | Class A        | RYESX           |
| C000010593 | Class C        | RYVCX           |

## 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:** Energy Services Fund

- **b. EDGAR series identifier (if any):** S000003801

- **c. LEI of Series:** 549300D57O5QYF1NS042

**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:** $16346465.26

**Total Liabilities:** $27777.13

**Net Assets:** $16318688.13

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000010590 | 20.94%               | 14.04%               | 1.97%                |
| Class ID C000010593 | 20.84%               | 13.94%               | 1.89%                |
| Class ID C000010592 | 20.91%               | 14.01%               | 1.94%                |
| Class ID C000010591 | 20.91%               | 14.01%               | 4.50%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $7226.13                 | $1438717.85                                |
| Month 2  | $7826.47                 | $1457093.79                                |
| Month 3  | $-128765.36              | $395660.20                                 |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| NOV Inc.                               | NOV Inc. COM                                    | CUSIP: 62955J103<br>LEI: 549300EHF3IW1AR6U008 | Long             | EC               | CORP              | US        |     29314 | NS      | $551396.34    | 3.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Solaris Energy Infrastructure Inc      | Solaris Energy Infrastructure Inc COM CL A      | CUSIP: 83418M103<br>LEI: 529900MTK3C8Y8TIIC10 | Long             | EC               | CORP              | US        |      7367 | NS      | $416309.17    | 2.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Helix Energy Solutions Group, Inc.     | Helix Energy Solutions Group, Inc. COM          | CUSIP: 42330P107<br>LEI: 416AP2JOUTCWEGSOZW41 | Long             | EC               | CORP              | US        |     26824 | NS      | $265289.36    | 1.63%             |  |  |  | No            |                  1 | On Loan: No      |
| SLB LTD                                | SLB Ltd. COM STK                                | CUSIP: 806857108<br>LEI: 213800ZUA17OK3QLGM62 | Long             | EC               | CORP              | CW        |     39818 | NS      | $2046247.02   | 12.54%            |  |  |  | No            |                  1 | On Loan: No      |
| Tenaris SA                             | Tenaris SA SPONSORED ADS                        | CUSIP: 88031M109<br>LEI: 549300Y7C05BKC4HZB40 | Long             | EC               | CORP              | LU        |      8388 | NS      | $488013.84    | 2.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Tidewater Inc New                      | Tidewater Inc New COM                           | CUSIP: 88642R109<br>LEI: 2549000JA5GRUPLMUH98 | Long             | EC               | CORP              | US        |      4291 | NS      | $358513.05    | 2.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Helmerich & Payne Inc                  | Helmerich & Payne Inc COM                       | CUSIP: 423452101<br>LEI: 254900NAOGHJ88RZ4C73 | Long             | EC               | CORP              | US        |     10862 | NS      | $391357.86    | 2.40%             |  |  |  | No            |                  1 | On Loan: No      |
| ATLAS ENERGY SOLUTIONS INC             | Atlas Energy Solutions Inc. COM NEW             | CUSIP: 642045108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     15971 | NS      | $209539.52    | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| TechnipFMC PLC                         | TechnipFMC PLC USD1                             | CUSIP: 000000000<br>LEI: 549300D5I93QWCJTCK36 | Long             | EC               | CORP              | GB        |      9282 | NS      | $641664.66    | 3.93%             |  |  |  | No            |                  1 | On Loan: No      |
| VALARIS LTD                            | Valaris Ltd. CL A                               | CUSIP: 000000000<br>LEI: 5299008BQ9IREYWBTS30 | Long             | EC               | CORP              | BM        |      5040 | NS      | $494121.60    | 3.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Transocean Ltd                         | Transocean Ltd COM CHF0.10                      | CUSIP: 000000000<br>LEI: 529900QO4W5DQGBGEF32 | Long             | EC               | CORP              | CH        |     77406 | NS      | $513201.78    | 3.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Archrock Inc                           | Archrock Inc COM                                | CUSIP: 03957W106<br>LEI: 549300K3RIHMHDVFTL28 | Long             | EC               | CORP              | US        |     14820 | NS      | $515736.00    | 3.16%             |  |  |  | No            |                  1 | On Loan: No      |
| NABORS INDUSTRIES LTD                  | Nabors Industries, Ltd. SHS                     | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | BM        |      1649 | NS      | $141912.94    | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Weatherford International Plc          | Weatherford International Plc COM USD0.001      | CUSIP: 000000000<br>LEI: 529900LPBDSCQDJKHQ39 | Long             | EC               | CORP              | IE        |      6302 | NS      | $596043.16    | 3.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Expro Group Holdings NV                | Expro Group Holdings NV EUR0.01                 | CUSIP: 000000000<br>LEI: 724500LJYA8QIT73H017 | Long             | EC               | CORP              | NL        |     17155 | NS      | $298668.55    | 1.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Borr Drilling Ltd.                     | Borr Drilling Ltd. SHS                          | CUSIP: 000000000<br>LEI: 213800J2JPCTXLHQ5R78 | Long             | EC               | CORP              | BM        |     75895 | NS      | $437914.15    | 2.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Patterson-UTI Energy Inc.              | Patterson-UTI Energy Inc. COM                   | CUSIP: 703481101<br>LEI: 254900XGFBKIXD6G0697 | Long             | EC               | CORP              | US        |     40667 | NS      | $440423.61    | 2.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Oceaneering International, Inc.        | Oceaneering International, Inc. COM             | CUSIP: 675232102<br>LEI: 549300L6PH74701W0R30 | Long             | EC               | CORP              | US        |     11013 | NS      | $390631.11    | 2.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Halliburton Company                    | Halliburton Company COM                         | CUSIP: 406216101<br>LEI: ENYF8GB5SMQZ25S06U51 | Long             | EC               | CORP              | US        |     31346 | NS      | $1222180.54   | 7.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Baker Hughes Company                   | Baker Hughes Company CL A                       | CUSIP: 05722G100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     28695 | NS      | $1751829.75   | 10.74%            |  |  |  | No            |                  1 | On Loan: No      |
| NATIONAL ENERGY SERVICES REUNITED CORP | National Energy Services Reunited Corp. COM NPV | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | VG        |     11876 | NS      | $254977.72    | 1.56%             |  |  |  | No            |                  1 | On Loan: No      |
| PROPETRO HOLDING CORP                  | ProPetro Holding Corp. COM                      | CUSIP: 74347M108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     16987 | NS      | $244782.67    | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Liberty Energy Inc                     | Liberty Energy Inc COM CL A                     | CUSIP: 53115L104<br>LEI: 254900PKFJW6RILDCM60 | Long             | EC               | CORP              | US        |     14976 | NS      | $431308.80    | 2.64%             |  |  |  | No            |                  1 | On Loan: No      |
| TETRA Technologies Inc.                | TETRA Technologies Inc. COM                     | CUSIP: 88162F105<br>LEI: 549300T5W131705EK832 | Long             | EC               | CORP              | US        |     26460 | NS      | $225439.20    | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Cactus Inc                             | Cactus Inc CL A                                 | CUSIP: 127203107<br>LEI: 549300J3T8C9F8QFKV08 | Long             | EC               | CORP              | US        |      8971 | NS      | $424956.27    | 2.60%             |  |  |  | No            |                  1 | On Loan: No      |
| NOBLE CORP PLC                         | Noble Corporation PLC ORD SHS A                 | CUSIP: 000000000<br>LEI: 549300I3HBUNXO0OG954 | Long             | EC               | CORP              | GB        |     11003 | NS      | $539917.21    | 3.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Seadrill Ltd.                          | Seadrill Ltd. COM USD0.01                       | CUSIP: 000000000<br>LEI: 213800EQ6L456U2JCO89 | Long             | EC               | CORP              | BM        |      8955 | NS      | $407452.50    | 2.50%             |  |  |  | No            |                  1 | On Loan: No      |
| PROFRAC HOLDING CORP                   | ProFrac Holding Corp. CLASS A COM               | CUSIP: 74319N100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     11159 | NS      | $69185.80     | 0.42%             |  |  |  | No            |                  1 | On Loan: No      |
| KODIAK GAS SERVICES INC                | Kodiak Gas Services Inc. COM                    | CUSIP: 50012A108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      8492 | NS      | $495253.44    | 3.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Select Water Solutions Inc             | Select Water Solutions Inc CL A COM             | CUSIP: 81617J301<br>LEI: 54930094OK8LA3QDW486 | Long             | EC               | CORP              | US        |     20314 | NS      | $310804.20    | 1.90%             |  |  |  | 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