# EDGAR Filing Document

**Accession Number:** 0000899148
**File Stem:** 0000913181-25-000402
**Filing Date:** 2025-12
**Character Count:** 14443
**Document Hash:** 6ac1ab1451dc64fece19f4217f77adc7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000913181-25-000402.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0000913181-25-000402

**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:** 251538274

**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 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:** 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:** 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:** $4434235.49

**Total Liabilities:** $8771.55

**Net Assets:** $4425463.94

**Cash Not Reported:** $0.02

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000010590 | 5.03%                | 5.40%                | 2.14%                |
| Class ID C000010593 | 4.94%                | 5.30%                | 2.07%                |
| Class ID C000010592 | 5.01%                | 5.37%                | 2.13%                |
| Class ID C000010591 | 5.00%                | 5.37%                | 2.13%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $111257.80               | $100487.54                                 |
| Month 2  | $115702.24               | $127410.51                                 |
| Month 3  | $88982.00                | $-32327.28                                 |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Archrock Inc                   | Archrock, Inc.                      | CUSIP: 03957W106<br>LEI: 549300K3RIHMHDVFTL28 | Long             | EC               | CORP              | US        |      6563 | NS      | $172672.53    | 3.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Helmerich & Payne Inc          | Helmerich & Payne, Inc.             | CUSIP: 423452101<br>LEI: 254900NAOGHJ88RZ4C73 | Long             | EC               | CORP              | US        |      5127 | NS      | $113255.43    | 2.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Seadrill Ltd                   | Seadrill Ltd.                       | CUSIP: N/A<br>LEI: 213800EQ6L456U2JCO89       | Long             | EC               | CORP              | US        |      3257 | NS      | $98393.97     | 2.22%             |  |  |  | No            |                  1 | On Loan: No      |
| J.P. MORGAN SECURITIES LLC     | J.P. Morgan Securities LLC          | CUSIP: N/A<br>LEI: ZBUT11V806EZRVTWT807       | Long             | RA               | CORP              | US        |      5633 | PA      | $5632.53      | 0.13%             |  |  |  | No            |                  2 | On Loan: No      |
| TechnipFMC PLC                 | TechnipFMC plc                      | CUSIP: N/A<br>LEI: 549300D5I93QWCJTCK36       | Long             | EC               | CORP              | US        |      4678 | NS      | $184547.10    | 4.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Cactus Inc                     | Cactus, Inc.                        | CUSIP: 127203107<br>LEI: 549300J3T8C9F8QFKV08 | Long             | EC               | CORP              | US        |      3432 | NS      | $135461.04    | 3.06%             |  |  |  | No            |                  1 | On Loan: No      |
| BOFA SECURITIES, INC.          | BofA Securities, Inc.               | CUSIP: N/A<br>LEI: 549300HN4UKV1E2R3U73       | Long             | RA               | CORP              | US        |      4053 | PA      | $4052.98      | 0.09%             |  |  |  | No            |                  2 | On Loan: No      |
| Borr Drilling Ltd              | Borr Drilling Ltd.                  | CUSIP: N/A<br>LEI: 213800J2JPCTXLHQ5R78       | Long             | EC               | CORP              | US        |     23861 | NS      | $64186.09     | 1.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Nabors Industries Ltd          | Nabors Industries Ltd.              | CUSIP: N/A<br>LEI: 5493008TXYN3II3PU369       | Long             | EC               | CORP              | US        |       966 | NS      | $39480.42     | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| ProPetro Holding Corp          | ProPetro Holding Corp.              | CUSIP: 74347M108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     10490 | NS      | $54967.60     | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Baker Hughes Co                | Baker Hughes Co.                    | CUSIP: 05722G100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     11433 | NS      | $557015.76    | 12.59%            |  |  |  | No            |                  1 | On Loan: No      |
| Helix Energy Solutions Group I | Helix Energy Solutions Group, Inc.  | CUSIP: 42330P107<br>LEI: 416AP2JOUTCWEGSOZW41 | Long             | EC               | CORP              | US        |     11549 | NS      | $75761.44     | 1.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Schlumberger NV                | Schlumberger N.V.                   | CUSIP: 806857108<br>LEI: 213800ZUA17OK3QLGM62 | Long             | EC               | CORP              | US        |     16069 | NS      | $552291.53    | 12.48%            |  |  |  | No            |                  1 | On Loan: No      |
| Noble Corp PLC                 | Noble Corporation plc               | CUSIP: N/A<br>LEI: 549300I3HBUNXO0OG954       | Long             | EC               | CORP              | US        |      5057 | NS      | $143011.96    | 3.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Valaris Ltd                    | Valaris Ltd.                        | CUSIP: N/A<br>LEI: N/A                        | Long             | EC               | CORP              | US        |      2624 | NS      | $127972.48    | 2.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Weatherford International PLC  | Weatherford International plc       | CUSIP: N/A<br>LEI: 529900LPBDSCQDJKHQ39       | Long             | EC               | CORP              | US        |      2669 | NS      | $182639.67    | 4.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Tenaris SA                     | Tenaris S.A.                        | CUSIP: 88031M109<br>LEI: 549300Y7C05BKC4HZB40 | Long             | EC               | CORP              | LU        |      3732 | NS      | $133493.64    | 3.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Expro Group Holdings NV        | Expro Group Holdings N.V.           | CUSIP: N/A<br>LEI: 724500LJYA8QIT73H017       | Long             | EC               | CORP              | US        |      7045 | NS      | $83694.60     | 1.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Kodiak Gas Services Inc        | Kodiak Gas Services, Inc.           | CUSIP: 50012A108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      3511 | NS      | $129801.67    | 2.93%             |  |  |  | No            |                  1 | On Loan: No      |
| RPC Inc                        | RPC, Inc.                           | CUSIP: 749660106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     11567 | NS      | $55058.92     | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Liberty Energy Inc             | Liberty Energy, Inc.                | CUSIP: 53115L104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      9291 | NS      | $114650.94    | 2.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Halliburton Co                 | Halliburton Co.                     | CUSIP: 406216101<br>LEI: ENYF8GB5SMQZ25S06U51 | Long             | EC               | CORP              | US        |     14727 | NS      | $362284.20    | 8.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Transocean Ltd                 | Transocean Ltd.                     | CUSIP: N/A<br>LEI: 529900QO4W5DQGBGEF32       | Long             | EC               | CORP              | US        |     31246 | NS      | $97487.52     | 2.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Patterson-UTI Energy Inc       | Patterson-UTI Energy, Inc.          | CUSIP: 703481101<br>LEI: 254900XGFBKIXD6G0697 | Long             | EC               | CORP              | US        |     20339 | NS      | $105356.02    | 2.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Oceaneering International Inc  | Oceaneering International, Inc.     | CUSIP: 675232102<br>LEI: 549300L6PH74701W0R30 | Long             | EC               | CORP              | US        |      4945 | NS      | $122537.10    | 2.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Tidewater Inc                  | Tidewater, Inc.                     | CUSIP: 88642R109<br>LEI: 2549000JA5GRUPLMUH98 | Long             | EC               | CORP              | US        |      2113 | NS      | $112686.29    | 2.55%             |  |  |  | No            |                  1 | On Loan: No      |
| NOV Inc                        | NOV, Inc.                           | CUSIP: 62955J103<br>LEI: 549300EHF3IW1AR6U008 | Long             | EC               | CORP              | US        |     13029 | NS      | $172634.25    | 3.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Select Water Solutions Inc     | Select Water Solutions, Inc.        | CUSIP: 81617J301<br>LEI: 54930094OK8LA3QDW486 | Long             | EC               | CORP              | US        |      9388 | NS      | $100357.72    | 2.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlas Energy Solutions Inc     | Atlas Energy Solutions, Inc.        | CUSIP: 642045108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      6412 | NS      | $72904.44     | 1.65%             |  |  |  | No            |                  1 | On Loan: No      |
| ProFrac Holding Corp           | ProFrac Holding Corp.               | CUSIP: 74319N100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      5009 | NS      | $18533.30     | 0.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Solaris Energy Infrastructure  | Solaris Energy Infrastructure, Inc. | CUSIP: 83418M103<br>LEI: 529900MTK3C8Y8TIIC10 | Long             | EC               | CORP              | US        |      3562 | NS      | $142373.14    | 3.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Aris Water Solutions Inc       | Aris Water Solutions, Inc.          | CUSIP: 04041L106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      3779 | NS      | $93190.14     | 2.11%             |  |  |  | No            |                  1 | 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