Form N-CSRS - Certified Shareholder Report, Semi-Annual:
SEC Accession No. 0001753926-25-001421
Filing Date
2025-09-02
Accepted
2025-09-02 15:04:49
Documents
20
Period of Report
2025-06-30
Effectiveness Date
2025-09-02

Document Format Files

Seq Description Document Type Size
1 N-CSRS g208729_ncsrs.htm   iXBRL N-CSRS 4202268
2 EX-99.CERT g208729_ex99cert.htm EX-99.CERT 12800
3 EX-99.906 CERT g208729_ex99906cert.htm EX-99.906 3403
4 GRAPHIC img001.jpg GRAPHIC 9407
5 GRAPHIC img002.jpg GRAPHIC 9861
6 GRAPHIC img003.jpg GRAPHIC 8835
  Complete submission text file 0001753926-25-001421.txt   6673355

Data Files

Seq Description Document Type Size
7 XBRL SCHEMA FILE ck0000732697-20250630.xsd EX-101.SCH 24222
8 XBRL DEFINITION FILE ck0000732697-20250630_def.xml EX-101.DEF 56491
9 XBRL LABEL FILE ck0000732697-20250630_lab.xml EX-101.LAB 69078
10 XBRL PRESENTATION FILE ck0000732697-20250630_pre.xml EX-101.PRE 79531
23 EXTRACTED XBRL INSTANCE DOCUMENT g208729_ncsrs_htm.xml XML 755849

Series and Classes/Contracts Information:

Existing
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019110   Madison Target Retirement 2020 Fund
Class/Contract C000052853   Madison Target Retirement 2020 Fund Class I
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019111   Madison Target Retirement 2030 Fund
Class/Contract C000052854   Madison Target Retirement 2030 Fund Class I
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019112   Madison Target Retirement 2040 Fund
Class/Contract C000052855   Madison Target Retirement 2040 Fund Class I
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019978   Core Bond Fund
Class/Contract C000056036   Core Bond Fund Class I
Class/Contract C000074783   Core Bond Fund Class II
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019980   Diversified Income Fund
Class/Contract C000056038   Diversified Income Fund Class I
Class/Contract C000074785   Diversified Income Fund Class II
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019981   Large Cap Value Fund
Class/Contract C000056039   Large Cap Value Fund Class I
Class/Contract C000074786   Large Cap Value Fund Class II
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019982   Large Cap Growth Fund
Class/Contract C000056040   Large Cap Growth Fund Class I
Class/Contract C000074787   Large Cap Growth Fund Class II
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019983   Mid Cap Fund
Class/Contract C000056041   Mid Cap Fund Class I
Class/Contract C000074788   Mid Cap Fund Class II
  Status Name Ticker Symbol
CIK 0000732697      
Series S000019999   Conservative Allocation Fund
Class/Contract C000056077   Conservative Allocation Fund Class I
Class/Contract C000074791   Conservative Allocation Fund Class II
  Status Name Ticker Symbol
CIK 0000732697      
Series S000020000   Aggressive Allocation Fund
Mailing Address 550 SCIENCE DRIVE MADISON WI 53711
Business Address 550 SCIENCE DRIVE MADISON WI 53711 6082740300
ULTRA SERIES FUND (Filer) CIK: 0000732697 (see all company filings)

EIN.: 392004659 | Fiscal Year End: 1231
Type: N-CSRS | Act: 40 | File No.: 811-04815 | Film No.: 251284740