# EDGAR Filing Document

**Accession Number:** 0000732697
**File Stem:** 0001752724-25-191561
**Filing Date:** 2025-8
**Character Count:** 10799
**Document Hash:** 8c00498ebc4ddf925e70fa20b171d3c1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-191561.hdr.sgml**: 20250818

**ACCESSION NUMBER**: 0001752724-25-191561

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250818

**DATE AS OF CHANGE**: 20250818

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ULTRA SERIES FUND
- **CENTRAL INDEX KEY:** 0000732697

**ORGANIZATION NAME:**
- **EIN:** 392004659
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04815
- **FILM NUMBER:** 251227585

**BUSINESS ADDRESS:**
- **STREET 1:** 550 SCIENCE DRIVE
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53711
- **BUSINESS PHONE:** 6082740300

**MAIL ADDRESS:**
- **STREET 1:** 550 SCIENCE DRIVE
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53711

## Series and Classes Contracts Data

### Aggressive Allocation Fund (Series ID: S000020000)

| Class ID   | Class Name                          | Ticker Symbol   |
|:---|:---|:---|
| C000056078 | Aggressive Allocation Fund Class I  |  |
| C000074792 | Aggressive Allocation Fund Class II |  |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** ULTRA SERIES FUND

- **b. Investment Company Act file number:** 811-04815

- **c. CIK number of Registrant:** 0000732697

- **d. LEI of Registrant:** 254900JPNAJ16VJV5X45

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

  - **Street Address 1:** 550 SCIENCE DRIVE

  - **City:** MADISON

  - **State:** WI

  - **Foreign country:** US

  - **Zip / Postal Code:** 53711

  - **Telephone number:** 608-274-0300

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

- **a. Name of Series:** Aggressive Allocation Fund

- **b. EDGAR series identifier (if any):** S000020000

- **c. LEI of Series:** 254900TW30Q1C0WB2A50

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

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-06-30

**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:** $43319268.41

**Total Liabilities:** $1945580.33

**Net Assets:** $41373688.08

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000074792 | -0.88%               | 3.60%                | 3.25%                |
| Class ID C000056078 | -0.86%               | 3.63%                | 3.27%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-71885.63               | $-289744.62                                |
| Month 2  | $21230.37                | $1376806.12                                |
| Month 3  | $29657.02                | $1117404.54                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| iShares MSCI Eurozone ETF                                        | iShares MSCI Eurozone ETF                                                   | CUSIP: 464286608<br>LEI: 549300Q88WD2SU6SPH06 | Long             | EC               | RF                | US        |     22943 | NS      | $1363961.35   | 3.30%             |  |  |  | No            |                  1 | On Loan: —       |
| Invesco Exchange-Traded Fund Trust - Invesco S&P 500 Quality Etf | Invesco Exchange-Traded Fund Trust - Invesco S&P 500 Quality ETF            | CUSIP: 46137V241<br>LEI: 549300CMNB8U49G4GY75 | Long             | EC               | RF                | US        |     71787 | NS      | $5115541.62   | 12.36%            |  |  |  | No            |                  1 | On Loan: No      |
| State Street Global Advisors                                     | State Street Navigator Securities Lending Government Money Market Portfolio | CUSIP: 857509301<br>LEI: 5493008BJIBKQ5KTIF74 | Long             | STIV             | RF                | US        |   1931648 | NS      | $1931648.00   | 4.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Distillate US Fundamental Stability & Value ETF                  | Distillate U.S. Fundamental Stability & Value ETF                           | CUSIP: 26922A321<br>LEI: 5493002W0E8K4UD8QD78 | Long             | EC               | RF                | US        |     50636 | NS      | $2802702.60   | 6.77%             |  |  |  | No            |                  1 | On Loan: —       |
| SPDR Portfolio Long Term Treasury ETF                            | SPDR Portfolio Long Term Treasury ETF                                       | CUSIP: 78464A664<br>LEI: 549300GYQKAMF6JUVI06 | Long             | EC               | RF                | US        |     27376 | NS      | $727654.08    | 1.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Energy Select Sector SPDR Fund                                   | Energy Select Sector SPDR Fund ETF                                          | CUSIP: 81369Y506<br>LEI: 54930064FLK0RD4TRU75 | Long             | EC               | RF                | US        |     11683 | NS      | $990835.23    | 2.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Vanguard Information Technology ETF                              | Vanguard Information Technology ETF                                         | CUSIP: 92204A702<br>LEI: J2NTZGJBERBYMUMBIE74 | Long             | EC               | RF                | US        |      4565 | NS      | $3027873.20   | 7.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Madison Investors Fund                                           | Madison Investors Fund                                                      | CUSIP: 557492386<br>LEI: 5493000V85LMHCOTG216 | Long             | EC               | RF                | US        |    229040 | NS      | $6848307.42   | 16.55%            |  |  |  | No            |                  1 | On Loan: No      |
| iShares Core S&P Small-Cap ETF                                   | iShares Core S&P Small-Cap ETF                                              | CUSIP: 464287804<br>LEI: 549300BZQ17QYN750B25 | Long             | EC               | RF                | US        |     15589 | NS      | $1703721.81   | 4.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Vanguard FTSE Europe ETF                                         | Vanguard FTSE Europe ETF                                                    | CUSIP: 922042874<br>LEI: 5493000IQHGUVNGQR883 | Long             | EC               | RF                | US        |     43995 | NS      | $3409612.50   | 8.24%             |  |  |  | No            |                  1 | On Loan: No      |
| State Street Global Advisors                                     | State Street Institutional US Government Money Market Fund                  | CUSIP: 857492706<br>LEI: 549300BZ5TGIFZUZDZ37 | Long             | STIV             | RF                | US        |   1640241 | NS      | $1640240.70   | 3.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Franklin FTSE Japan ETF                                          | Franklin FTSE Japan ETF                                                     | CUSIP: 35473P744<br>LEI: 549300V7MZYC1Z30JS82 | Long             | EC               | RF                | US        |     65269 | NS      | $2098398.35   | 5.07%             |  |  |  | No            |                  1 | On Loan: No      |
| iShares MSCI Emerging Markets Asia ETF                           | iShares MSCI Emerging Markets Asia ETF                                      | CUSIP: 464286426<br>LEI: 549300QNROXHZ53JWF91 | Long             | EC               | RF                | US        |     31358 | NS      | $2588602.90   | 6.26%             |  |  |  | No            |                  1 | On Loan: —       |
| SPDR S&P Bank ETF                                                | SPDR S&P Bank ETF                                                           | CUSIP: 78464A797<br>LEI: 549300WRV3OCU6OV1X49 | Long             | EC               | RF                | US        |     33398 | NS      | $1862272.48   | 4.50%             |  |  |  | No            |                  1 | On Loan: —       |
| Schwab Intermediate-Term U.S. Treasury ETF                       | Schwab Intermediate-Term U.S. Treasury ETF                                  | CUSIP: 808524854<br>LEI: 549300LPS1K6133V2Q55 | Long             | EC               | RF                | US        |     12545 | NS      | $314001.35    | 0.76%             |  |  |  | No            |                  1 | On Loan: —       |
| Madison Core Bond Fund                                           | Madison Core Bond Fund                                                      | CUSIP: 557492196<br>LEI: 254900KXQJDPZNNEA190 | Long             | EC               | RF                | US        |    639873 | NS      | $5765260.09   | 13.93%            |  |  |  | No            |                  1 | On Loan: No      |
| Madison Mid Cap Fund                                             | Madison Mid Cap Fund                                                        | CUSIP: 557492485<br>LEI: 254900GFBYFLI6QYMW95 | Long             | EC               | RF                | US        |     32044 | NS      | $545716.64    | 1.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Janus Henderson Mortgage-Backed Securities ETF                   | Janus Henderson Mortgage-Backed Securities ETF                              | CUSIP: 47103U852<br>LEI: 549300V6TVE4ZJCDWY16 | Long             | EC               | RF                | US        |     12523 | NS      | $564161.15    | 1.36%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-07-16

**Name of Applicant:** ULTRA SERIES FUND

**Signature:** Greg Hoppe

**Name of Signer:** Greg Hoppe

**Title:** Chief Financial Officer