OOSAX — Invesco Senior Floating Rate Fund
Data updated: 2026-07-30
OOSAX — Invesco Senior Floating Rate Fund. Short Corporate Bond · $2.52B AUM · 1.12% expense ratio. Holdings, fees, performance and SEC filings.
OOSAX Fund Overview
OOSAX — Invesco Senior Floating Rate Fund is a US mutual fund managed by Aim Counselor Series Trust (invesco Counselor Series Trust), 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: Aim Counselor Series Trust (invesco Counselor Series Trust)
- Category: Short Corporate Bond
- Assets under management: $2.52B
- 1-year return: 4.0%
- Ticker: OOSAX
- SEC CIK: 0001112996
- SEC series ID: S000064615
- Share class ID: C000209161
OOSAX Investment Objective and Strategy
Invesco Senior Floating Rate Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Aim Counselor Series Trust (invesco Counselor Series Trust).
Investment objective
The Funds investment objective is to seek income.
Principal investment strategy
The Fund invests mainly in floating rate loans (sometimes referred to as adjustable rate loans) that hold (or in the judgment of the investment adviser, hold) a senior position in the capital structure of U.S. and foreign corporations, partnerships or other business entities that, under normal circumstances, allow them to have priority of claim ahead of (or at least as high as) other obligations of a borrower in the event of liquidation. These investments are referred to as Senior Loans. Senior Loans may be collateralized or uncollateralized. They typically pay interest at rates that float above, or are adjusted periodically based on, a benchmark that reflects current interest rates. Under normal market conditions, the Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in Senior Loans, and in derivatives and other instruments that have economic characteristics similar to such securities.
The Fund may invest in Senior Loans directly as an original lender, or by assignment from a lender, or it may invest indirectly through loan participation agreements. While most of these Senior Loans will be collateralized, the Fund can also invest up to 10% of its net assets (plus the amount of borrowings for investment purposes) in uncollateralized Senior Loans. The Fund can invest up to 20% of its total assets in cash (whether U.S. dollars or a foreign currency) or cash equivalents, or in other loans, securities and other investments, including but not limited to: secured or unsecured fixed-rate loans, fixed or floating rate notes or bonds, securities issued or guaranteed by the U.S. government or its agencies or instrumentalities, investment-grade short-term debt obligations, equity securities (including common stocks, preferred stocks, rights, warrants, and securities convertible into common stock) and derivatives.
The Fund also may invest in Senior Loans made in connection with highly leveraged transactions, including but not limited to, operating loans, leveraged buyout loans, and leveraged capitalization loans. The Fund will invest 25% or more of its total assets in instruments of the group of industries in the financial securities sector. The Fund can invest in investment-grade or below-investment-grade debt instruments (sometimes referred to as high yield or junk securities). The Fund can invest up to 100% of its assets in debt instruments rated below-investment-grade, and will normally invest a substantial portion of its assets in those securities. Investment-grade debt instruments are rated in one of the four highest rating categories by nationally recognized statistical rating organizations such as Moodys or S&P Global Ratings (or, in the case of unrated securities, determined by the Adviser to be comparable to securities rated investment-grade).
The Fund may also invest in unrated instruments, in which case the Funds Adviser may assign ratings to those instruments, after assessing their credit quality and other factors, in investment-grade or below-investment-grade categories similar to those of nationally recognized statistical rating organizations. The Fund may invest in defaulted or distressed loans and loans to bankrupt companies. The Fund may invest in securities of U.S. and foreign issuers. The Fund can invest in Senior Loans or other investments (such as subordinated debt and fixed-rate loans) issued by foreign entities. The Fund has no requirements as to the range of maturities of the debt instruments it can buy or as to the market capitalization of the issuers of those instruments. The Fund can borrow up to one-third of the Funds assets (including the amount borrowed) and use other techniques to manage its cash flow, to redeem shares, or to purchase assets, a technique referred to as leverage.
The Fund may also use certain types of derivative investments to try to enhance income or to seek to manage (hedge) investment risks, including, but not limited to, options, futures contracts, swaps, and structured notes. The Fund can engage in foreign currency transactions either on a spot basis (i.e. for prompt delivery and settlement at the rate prevailing in the currency exchange market at the time) or through forward foreign currency contracts to seek to hedge against adverse movements in the foreign currencies in which portfolio securities are denominated. The Fund can use currency futures and currency swaps to seek to hedge its exposure to foreign currencies. The Fund may invest without limitation in obligations for which there is no readily available trading market or which are otherwise illiquid, including securities restricted as to resale such as those contained in Rule 144A promulgated under the Securities Act of 1933, as amended, and other types of exempt securities.
In selecting investments for the Fund, the portfolio managers evaluate overall investment opportunities and risks among the types of investments the Fund can hold. They analyze the credit standing and risks of borrowers whose loans or debt securities they are considering for the Funds portfolio. They evaluate information about borrowers from their own research or research supplied by rating organizations, agent banks or other sources and select only those loans that they believe are likely to pay the interest and repay the principal when it becomes due. The portfolio managers consider many factors, including, among others, ? the borrowers past and expected future financial performance ? the experience and depth of the borrowers management ? the status of the borrowers industry and its position in that industry ?
the collateral for the loan or other debt security ? the borrowers assets and cash flows ? the credit quality of the debt obligations of the bank servicing the loan and other intermediaries imposed between the borrower and the Fund. The credit research process utilized by the Fund to implement its investment strategy in pursuit of its investment objective considers factors that may include, but are not limited to, an issuers operations, capital structure and environmental, social and governance (ESG) considerations. Credit quality analysis for certain issuers therefore may consider whether any ESG factors pose a material financial risk or opportunity to an issuer. The Adviser may determine that ESG considerations are not material to certain issuers or types of investments held by the Fund.
In addition, not all issuers or Fund investments may undergo a credit quality analysis that considers ESG factors, and not all investments held by the Fund will rate strongly on ESG criteria. There can be no assurance that the portfolio managers analysis will identify all of the factors that may impair the value of a Senior Loan or other investment.
OOSAX Holdings
Top 10 holdings of Invesco Senior Floating Rate Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| My Alarm Center, LLC | 1.74% |
| Invesco Government & Agency Portfolio | 1.55% |
| Invesco Treasury Portfolio | 1.03% |
| Monitronics International, Inc. | 0.98% |
| Crown Finance US, Inc. | 0.82% |
| Monitronics International, Inc. | 0.80% |
| Empire Today, LLC | 0.72% |
| AAdvantage Loyality IP Ltd. (American Airlines, Inc.) | 0.70% |
| Altice-France (SFR / Numericable / YPSO) | 0.67% |
| Libbey Glass LLC | 0.64% |
OOSAX Portfolio Allocation
Asset-class allocation of Invesco Senior Floating Rate Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Loans | 82.6% |
| Equity | 7.7% |
| Fixed Income | 5.9% |
| Cash & Equivalents | 2.6% |
| Derivatives | 0.7% |
| Securitized | 0.5% |
OOSAX Performance
Total returns for OOSAX (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.4% |
| 1 year | 4.0% |
| 3 years (annualised) | 7.3% |
| 5 years (annualised) | 5.6% |
OOSAX Risk Information
Risk metrics for OOSAX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.0%
OOSAX Costs and Fees
OOSAX costs about $112 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.12%
- Gross expense ratio: 1.12%
- Portfolio turnover: 49%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
OOSAX Cashflows
Over the 12 months to 2026-05, Invesco Senior Floating Rate Fund had net outflows of $241.43M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-05 | −$1.97M |
| 2026-04 | −$12.09M |
| 2026-03 | −$37.97M |
| 2026-02 | −$51.05M |
| 2026-01 | −$16.31M |
| 2025-12 | −$98.55M |
OOSAX Debt Constituents
Largest debt holdings of Invesco Senior Floating Rate Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Altice Financing S.A. | 0.54% |
| Zenith Finco PLC | 0.43% |
| Viking Baked Goods Acquisition Corp. | 0.38% |
| Rand Parent, LLC | 0.36% |
| Allied Universal Holdco LLC | 0.28% |
| Sherwood Financing PLC | 0.25% |
| Selecta Group B.V. | 0.25% |
| Uniti Services LLC | 0.24% |
| Brookfield Property REIT, Inc. / BPR Cumulus LLC / BPR Nimbus LLC / GGSI Sellco LL | 0.24% |
| CRC Insurance Group, LLC | 0.22% |
OOSAX Prospectus and SEC Filings
Official Invesco Senior Floating Rate Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-12-18
- Prospectus (485BPOS) — filed 2024-12-19
- Prospectus (485BPOS) — filed 2023-12-14
- Portfolio holdings (N-PORT) — filed 2026-07-30
- Portfolio holdings (N-PORT) — filed 2026-04-29
- Portfolio holdings (N-PORT) — filed 2026-01-29
- Annual census (N-CEN) — filed 2025-11-14
- Annual census (N-CEN) — filed 2024-11-14
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.