# EDGAR Filing Document

**Accession Number:** 0000899148
**File Stem:** 0000913181-25-000359
**Filing Date:** 2025-12
**Character Count:** 6696
**Document Hash:** 371a6c58b03741c32d5413ed51a3c812
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000913181-25-000359.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0000913181-25-000359

**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:** 251538228

**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

### Japan 2x Strategy Fund (Series ID: S000018293)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000050428 | Class A      | RYJSX           |
| C000050429 | Class C      | RYJTX           |
| C000050430 | Class H      | RYJHX           |

## 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:** Japan 2x Strategy Fund

- **b. EDGAR series identifier (if any):** S000018293

- **c. LEI of Series:** 549300TYQ6P1QBF6GR37

**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:** $1847827.67

**Total Liabilities:** $3063.34

**Net Assets:** $1844764.33

**Cash Not Reported:** $43804.63

**Currency Risk Metrics (dv01):**

- 

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

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **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 C000050428 | -7.65%               | 11.43%               | 12.21%               |
| Class ID C000050430 | -7.66%               | 11.44%               | 12.21%               |
| Class ID C000050429 | -7.70%               | 11.39%               | 12.13%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $0.00                    | $-2.16                                     |
| Month 2  | $0.00                    | $69.28                                     |
| Month 3  | $0.00                    | $-58.67                                    |

**Designated Index Information**

- **Index Name:** Nikkei 225 Stock Average

- **Index Identifier:** NIKJPYUSD

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| BOFA SECURITIES, INC.       | BofA Securities, Inc.                        | CUSIP: N/A<br>LEI: 549300HN4UKV1E2R3U73       | Long             | RA               | CORP              | US        |    453926 | PA      | $453925.50    | 24.61%            |  |  |  | No            |                  2 | On Loan: No      |
| Chicago Mercantile Exchange | Nikkei 225 (CME) Index Futures Contracts     | CUSIP: N/A<br>LEI: N/A                        | N/A              | DE               |  | US        |        15 | NC      | $102033.34    | 5.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Mercantile Exchange | Micro Nikkei Stock Average Futures Contracts | CUSIP: N/A<br>LEI: N/A                        | N/A              | DE               |  | US        |        28 | NC      | $11197.91     | 0.61%             |  |  |  | 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        |    630833 | PA      | $630832.87    | 34.20%            |  |  |  | No            |                  2 | On Loan: No      |
| Chicago Mercantile Exchange | Japanese Yen Futures Contracts               | CUSIP: N/A<br>LEI: N/A                        | N/A              | DFE              |  | US        |        47 | NC      | $-11715.55    | -0.64%            |  |  |  | No            |                  1 | On Loan: No      |
| TREASURY BILL               | U.S. Treasury Bills                          | CUSIP: 912797RC3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    727000 | PA      | $725939.52    | 39.35%            | 2025-10-14      | None          | 0.00%                 | 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