Core Bond Fund
Data updated: 2026-05-22
C000056036 — Core Bond Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Securitized (MBS/ABS/CMBS) Bond · $49.83M AUM · 0.58% expense ratio · 4.6% 1-yr return. From SEC regulatory filings.
C000056036 Fund Overview
Core Bond Fund is a US mutual fund managed by Ultra Series Fund, categorised as Long Securitized (MBS/ABS/CMBS) Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Ultra Series Fund
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $49.83M
- 1-year return: 4.6%
- SEC CIK: 0000732697
- SEC series ID: S000019978
- Share class ID: C000056036
C000056036 Holdings
Top 10 holdings of Core Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Freddie Mac | 2.28% |
| United States Treasury | 1.80% |
| United States Treasury | 1.52% |
| Freddie Mac | 1.51% |
| United States Treasury | 1.34% |
| State Street Global Advisors | 1.27% |
| Fannie Mae | 1.17% |
| United States Treasury | 1.15% |
| United States Treasury | 1.15% |
| Fannie Mae | 1.14% |
C000056036 Portfolio Allocation
Asset-class allocation of Core Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 51.9% |
| Fixed Income | 45.5% |
| Cash & Equivalents | 1.7% |
C000056036 Performance
Total returns for C000056036 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.1% |
| 1 year | 4.6% |
| 3 years (annualised) | 3.9% |
| 5 years (annualised) | 0.5% |
C000056036 Risk Information
Risk metrics for C000056036, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.6%
C000056036 Costs and Fees
C000056036 costs about $58 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.58%
- Gross expense ratio: 0.58%
- Portfolio turnover: 13%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
C000056036 Cashflows
Over the 12 months to 2026-03, Core Bond Fund had net outflows of $14.89M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$566.31K |
| 2026-02 | −$476.73K |
| 2026-01 | −$851.47K |
| 2025-12 | $1.44M |
| 2025-11 | −$762.93K |
| 2025-10 | −$545.44K |
C000056036 Debt Constituents
Largest debt holdings of Core Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 1.80% |
| United States Treasury | 1.52% |
| United States Treasury | 1.34% |
| United States Treasury | 1.15% |
| United States Treasury | 1.15% |
| United States Treasury | 1.12% |
| United States Treasury | 1.10% |
| United States Treasury | 1.03% |
| United States Treasury | 0.79% |
| United States Treasury | 0.69% |
C000056036 Prospectus and SEC Filings
Official Core Bond Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Securitized (MBS/ABS/CMBS) Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.