OIFIX — Optimum Fixed Income Fund
Data updated: 2026-08-26
OIFIX — Optimum Fixed Income Fund. Long Total / Aggregate Bond · $2.67B AUM · 0.79% expense ratio. Holdings, fees, performance and SEC filings.
OIFIX Fund Overview
OIFIX — Optimum Fixed Income Fund is a US mutual fund managed by Optimum Fund Trust, categorised as Long Total / Aggregate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Optimum Fund Trust
- Category: Long Total / Aggregate Bond
- Assets under management: $2.67B
- 1-year return: 4.0%
- Ticker: OIFIX
- SEC CIK: 0001227523
- SEC series ID: S000002420
- Share class ID: C000006446
OIFIX Holdings
Top 10 holdings of Optimum Fixed Income Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| J.p. Morgan Securities LLC | 10.36% |
| Federal National Mortgage Association | 7.29% |
| Federal National Mortgage Association | 6.59% |
| Federal National Mortgage Association | 5.34% |
| United States Of America - Bureau Of The Public Debt | 3.87% |
| Federal National Mortgage Association | 2.92% |
| Federal National Mortgage Association | 2.46% |
| Brazil, Federative Republic Of - Secretaria Do Tesouro Nacional | 1.43% |
| United States Of America - Bureau Of The Public Debt | 1.37% |
| Federal National Mortgage Association | 1.24% |
OIFIX Portfolio Allocation
Asset-class allocation of Optimum Fixed Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 55.7% |
| Fixed Income | 54.2% |
| Cash & Equivalents | 13.6% |
| Real Estate | 0.7% |
| Loans | 0.4% |
| Equity | 0.1% |
| Derivatives | 0.1% |
OIFIX Performance
Total returns for OIFIX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.6% |
| 1 year | 4.0% |
| 3 years (annualised) | 4.4% |
| 5 years (annualised) | -0.1% |
OIFIX Risk Information
Risk metrics for OIFIX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.2%
OIFIX Costs and Fees
OIFIX costs about $79 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.79%
- Gross expense ratio: 0.79%
- Portfolio turnover: 375%
- Brokerage commissions: 0.45 bps of average net assets (SEC N-CEN)
OIFIX Cashflows
Over the 12 months to 2026-06, Optimum Fixed Income Fund had net outflows of $81.17M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$22.90M |
| 2026-05 | −$31.70M |
| 2026-04 | −$14.88M |
| 2026-03 | −$42.04M |
| 2026-02 | −$18.32M |
| 2026-01 | $56.38M |
OIFIX Debt Constituents
Largest debt holdings of Optimum Fixed Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Of America - Bureau Of The Public Debt | 3.87% |
| Brazil, Federative Republic Of - Secretaria Do Tesouro Nacional | 1.43% |
| United States Of America - Bureau Of The Public Debt | 1.37% |
| United States Of America - Bureau Of The Public Debt | 1.06% |
| United States Of America - Bureau Of The Public Debt | 0.97% |
| United States Of America - Bureau Of The Public Debt | 0.73% |
| United States Of America - Bureau Of The Public Debt | 0.73% |
| United States Of America - Bureau Of The Public Debt | 0.70% |
| Beignet Investor LLC | 0.53% |
| United States Of America - Bureau Of The Public Debt | 0.53% |
OIFIX Prospectus and SEC Filings
Official Optimum Fixed Income Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-07-29
- Prospectus (485BPOS) — filed 2025-07-29
- Prospectus (485BPOS) — filed 2024-07-29
- Portfolio holdings (N-PORT) — filed 2026-08-26
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2026-06-12
- Annual census (N-CEN) — filed 2025-06-12
Related Funds
Other Long Total / Aggregate 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.