# EDGAR Filing Document

**Accession Number:** 0000732697
**File Stem:** 0001752724-25-191557
**Filing Date:** 2025-8
**Character Count:** 14875
**Document Hash:** 6f2ad45a3115682fed8f09d485d7c6fa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-191557.hdr.sgml**: 20250818

**ACCESSION NUMBER**: 0001752724-25-191557

**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:** 251227581

**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

### Mid Cap Fund (Series ID: S000019983)

| Class ID   | Class Name            | Ticker Symbol   |
|:---|:---|:---|
| C000056041 | Mid Cap Fund Class I  |  |
| C000074788 | Mid Cap 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:** Mid Cap Fund

- **b. EDGAR series identifier (if any):** S000019983

- **c. LEI of Series:** 2549003E389BDUF7PS08

**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:** $122298006.05

**Total Liabilities:** $108942.19

**Net Assets:** $122189063.86

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000074788 | -0.65%               | 4.06%                | 1.55%                |
| Class ID C000056041 | -0.63%               | 4.08%                | 1.57%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $907503.75               | $-1818725.91                               |
| Month 2  | $0.00                    | $5149469.86                                |
| Month 3  | $4870519.97              | $-2957010.24                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Teledyne Technologies Inc                  | Teledyne Technologies, Inc.                                | CUSIP: 879360105<br>LEI: 549300VSMO9KYQWDND94 | Long             | EC               | CORP              | US        |      6360 | NS      | $3258291.60   | 2.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Expeditors International of Washington Inc | Expeditors International of Washington, Inc.               | CUSIP: 302130109<br>LEI: 984500B055A804AB6E40 | Long             | EC               | CORP              | US        |     15251 | NS      | $1742426.75   | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Liberty Broadband Corp                     | Liberty Broadband Corp.                                    | CUSIP: 530307305<br>LEI: 549300MIX43II8JLN536 | Long             | EC               | CORP              | US        |     38806 | NS      | $3817734.28   | 3.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Trex Co Inc                                | Trex Co., Inc.                                             | CUSIP: 89531P105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     54357 | NS      | $2955933.66   | 2.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Amphenol Corp                              | Amphenol Corp.                                             | CUSIP: 032095101<br>LEI: 549300D3L3G0R4U4VT04 | Long             | EC               | CORP              | US        |     69343 | NS      | $6847621.25   | 5.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Brookfield Asset Management Ltd            | Brookfield Asset Management Ltd.                           | CUSIP: 113004105<br>LEI: 549300CZ84WPNJZKY093 | Long             | EC               | CORP              | CA        |     54294 | NS      | $3001372.32   | 2.46%             |  |  |  | No            |                  1 | On Loan: —       |
| Arch Capital Group Ltd                     | Arch Capital Group Ltd.                                    | CUSIP: 000000000<br>LEI: 549300AYR4P8AFKDCE43 | Long             | EC               | CORP              | BM        |     96739 | NS      | $8808085.95   | 7.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Lithia Motors Inc                          | Lithia Motors, Inc.                                        | CUSIP: 536797103<br>LEI: SE8N1EZEHPZQBCBVKD53 | Long             | EC               | CORP              | US        |      8122 | NS      | $2743774.04   | 2.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Microchip Technology Inc                   | Microchip Technology, Inc.                                 | CUSIP: 595017104<br>LEI: 5493007PTFULNYZJ1R12 | Long             | EC               | CORP              | US        |     41528 | NS      | $2922325.36   | 2.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Asbury Automotive Group Inc                | Asbury Automotive Group, Inc.                              | CUSIP: 043436104<br>LEI: 549300JH4DTA7U42GL91 | Long             | EC               | CORP              | US        |     10756 | NS      | $2565736.24   | 2.10%             |  |  |  | No            |                  1 | On Loan: No      |
| CDW Corp/DE                                | CDW Corp.                                                  | CUSIP: 12514G108<br>LEI: 9845001B052ABF0B6755 | Long             | EC               | CORP              | US        |     28751 | NS      | $5134641.09   | 4.20%             |  |  |  | No            |                  1 | On Loan: No      |
| W R Berkley Corp                           | W.R. Berkley Corp.                                         | CUSIP: 084423102<br>LEI: SQOAGCLKBDWNVYV1OV80 | Long             | EC               | CORP              | US        |     51709 | NS      | $3799060.23   | 3.11%             |  |  |  | No            |                  1 | On Loan: No      |
| Gartner Inc                                | Gartner, Inc.                                              | CUSIP: 366651107<br>LEI: PP55B5R38BFB8O8HH686 | Long             | EC               | CORP              | US        |     15680 | NS      | $6338169.60   | 5.19%             |  |  |  | No            |                  1 | On Loan: No      |
| PACCAR Inc                                 | PACCAR, Inc.                                               | CUSIP: 693718108<br>LEI: KDTEY8BWE486IKZ3CC07 | Long             | EC               | CORP              | US        |     46762 | NS      | $4445195.72   | 3.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Carlisle Cos Inc                           | Carlisle Cos., Inc.                                        | CUSIP: 142339100<br>LEI: XR64VGX1ZPX6G7ZN7Z11 | Long             | EC               | CORP              | US        |     14202 | NS      | $5303026.80   | 4.34%             |  |  |  | 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        |   5611413 | NS      | $5611412.82   | 4.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Medpace Holdings Inc                       | Medpace Holdings, Inc.                                     | CUSIP: 58506Q109<br>LEI: 549300H8TYEUVTW14A54 | Long             | EC               | CORP              | US        |      8300 | NS      | $2605038.00   | 2.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Labcorp Holdings Inc                       | Labcorp Holdings, Inc.                                     | CUSIP: 504922105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     15707 | NS      | $4123244.57   | 3.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Arista Networks Inc                        | Arista Networks, Inc.                                      | CUSIP: 040413205<br>LEI: 635400H1WKBLOQERUU95 | Long             | EC               | CORP              | US        |     33122 | NS      | $3388711.82   | 2.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Ross Stores Inc                            | Ross Stores, Inc.                                          | CUSIP: 778296103<br>LEI: 549300ENZFLPGRDFZQ60 | Long             | EC               | CORP              | US        |     45359 | NS      | $5786901.22   | 4.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Cullen/Frost Bankers Inc                   | Cullen/Frost Bankers, Inc.                                 | CUSIP: 229899109<br>LEI: 529900V2E9G9AY665O34 | Long             | EC               | CORP              | US        |     10821 | NS      | $1390931.34   | 1.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Brown & Brown Inc                          | Brown & Brown, Inc.                                        | CUSIP: 115236101<br>LEI: 549300PC8KTJ71XKFY89 | Long             | EC               | CORP              | US        |     60623 | NS      | $6721272.01   | 5.50%             |  |  |  | No            |                  1 | On Loan: No      |
| MKS Inc                                    | MKS, Inc.                                                  | CUSIP: 55306N104<br>LEI: 549300KEQATBHAGVF505 | Long             | EC               | CORP              | US        |     38798 | NS      | $3854969.28   | 3.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Liberty Media Corp-Liberty Formula One     | Liberty Media Corp.-Liberty Formula One                    | CUSIP: 531229755<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     39488 | NS      | $4126496.00   | 3.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Copart Inc                                 | Copart, Inc.                                               | CUSIP: 217204106<br>LEI: 549300KVYX3JWMYEHU61 | Long             | EC               | CORP              | US        |     92613 | NS      | $4544519.91   | 3.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Kinsale Capital Group Inc                  | Kinsale Capital Group, Inc.                                | CUSIP: 49714P108<br>LEI: 529900QTUQHNZ6HOA508 | Long             | EC               | CORP              | US        |      4655 | NS      | $2252554.50   | 1.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Moelis & Co                                | Moelis & Co.                                               | CUSIP: 60786M105<br>LEI: 549300891QNU7VTQUR83 | Long             | EC               | CORP              | US        |     34763 | NS      | $2166430.16   | 1.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Glacier Bancorp Inc                        | Glacier Bancorp, Inc.                                      | CUSIP: 37637Q105<br>LEI: 549300SMJAUKZB5D7V74 | Long             | EC               | CORP              | US        |     29554 | NS      | $1273186.32   | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Thor Industries Inc                        | Thor Industries, Inc.                                      | CUSIP: 885160101<br>LEI: 254900XZO1228PDSG060 | Long             | EC               | CORP              | US        |     31549 | NS      | $2801866.69   | 2.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Waters Corp                                | Waters Corp.                                               | CUSIP: 941848103<br>LEI: 5T547R1474YC9HOD8Q74 | Long             | EC               | CORP              | US        |      8822 | NS      | $3079230.88   | 2.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Graco Inc                                  | Graco, Inc.                                                | CUSIP: 384109104<br>LEI: 4T5VJ4S81BRT6Q7GGT78 | Long             | EC               | CORP              | US        |     14212 | NS      | $1221805.64   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Floor & Decor Holdings Inc                 | Floor & Decor Holdings, Inc.                               | CUSIP: 339750101<br>LEI: 549300M5FR3N688XGQ36 | Long             | EC               | CORP              | US        |     47626 | NS      | $3617670.96   | 2.96%             |  |  |  | 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