OSTIX — Osterweis Strategic Income Fund
Data updated: 2026-06-30
OSTIX — Osterweis Strategic Income Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Short Corporate Bond · $5.72B AUM · 0.86% expense ratio · 4.7% 1-yr return. From SEC regulatory filings.
OSTIX Fund Overview
OSTIX — Osterweis Strategic Income Fund is a US mutual fund managed by Professionally Managed Portfolios, categorised as Short Corporate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Professionally Managed Portfolios
- Category: Short Corporate Bond
- Assets under management: $5.72B
- 1-year return: 4.7%
- Ticker: OSTIX
- SEC CIK: 0000811030
- SEC series ID: S000004930
- Share class ID: C000013345
OSTIX Holdings
Top 10 holdings of Osterweis Strategic Income Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Federated Hermes US Treasury C | 2.32% |
| MSILF Treasury Securities Port | 2.32% |
| First American US Treasury Mon | 2.19% |
| Unisys Corp. | 1.28% |
| Oxford Fin Llc/co-Iss Ii | 1.24% |
| Hat Holdings I Llc/hat | 1.15% |
| Coeur Mining, Inc. | 1.15% |
| Kehe Dist/fin / Nextwave | 1.14% |
| Wesco Distribution, Inc. | 1.13% |
| Pitney Bowes, Inc. | 1.10% |
OSTIX Portfolio Allocation
Asset-class allocation of Osterweis Strategic Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 69.9% |
| Cash & Equivalents | 28.3% |
| Equity | 0.7% |
OSTIX Performance
Total returns for OSTIX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.1% |
| 1 year | 4.7% |
| 3 years (annualised) | 7.6% |
| 5 years (annualised) | 4.6% |
OSTIX Risk Information
Risk metrics for OSTIX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 1.9%
OSTIX Costs and Fees
OSTIX costs about $86 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.86%
- Gross expense ratio: 0.86%
- Portfolio turnover: 37%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
OSTIX Cashflows
Over the 12 months to 2026-03, Osterweis Strategic Income Fund had net outflows of $269.85M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$34.98M |
| 2026-02 | $8.90M |
| 2026-01 | −$8.48M |
| 2025-12 | −$21.32M |
| 2025-11 | $27.37M |
| 2025-10 | $12.62M |
OSTIX Debt Constituents
Largest debt holdings of Osterweis Strategic Income Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Unisys Corp. | 1.28% |
| Oxford Fin Llc/co-Iss Ii | 1.24% |
| Hat Holdings I Llc/hat | 1.15% |
| Coeur Mining, Inc. | 1.15% |
| Kehe Dist/fin / Nextwave | 1.14% |
| Wesco Distribution, Inc. | 1.13% |
| Pitney Bowes, Inc. | 1.10% |
| Banijay Entertainment | 1.08% |
| Liberty Broadband Corp. | 1.05% |
| Griffon Corporation | 1.05% |
OSTIX Prospectus and SEC Filings
Official Osterweis Strategic Income Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Short Corporate 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.