BlackRock Total Return Fund
Data updated: 2026-08-28
C000037618 — BlackRock Total Return Fund. Long Securitized (MBS/ABS/CMBS) Bond · $18.06B AUM. Holdings, fees, performance and SEC filings.
C000037618 Fund Overview
BlackRock Total Return Fund is a US mutual fund managed by BlackRock Bond Fund, Inc., 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: BlackRock Bond Fund, Inc.
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $18.06B
- 1-year return: 4.7%
- SEC CIK: 0000276463
- SEC series ID: S000004071
- Share class ID: C000037618
C000037618 Investment Objective and Strategy
BlackRock Total Return Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by BlackRock Bond Fund, Inc..
Investment objective
The investment objective of the BlackRock Total Return Fund (the “Fund”) is to realize a total return that exceeds that of the Bloomberg Barclays U.S. Aggregate Bond Index.
Principal investment strategy
"The Fund typically invests more than 90% of its assets in a diversified portfolio of fixed-income securities such as corporate bonds and notes, mortgage-backed securities, asset-backed securities, convertible securities, preferred securities and government obligations. Both U.S. and foreign companies and governments may issue these securities. Under normal circumstances, the Fund invests at least 80% of its assets in bonds and invests primarily in investment grade fixed-income securities. The Fund may invest in fixed-income securities of any duration or maturity. The Fund may invest up to 30% of its net assets in securities of foreign issuers, of which 20% (as a percentage of the Fund's net assets) may be in emerging markets issuers. Investments in U.S. dollar-denominated securities of foreign issuers, excluding issuers from emerging markets, are permitted beyond the 30% limit.
This means that the Fund may invest in such U.S. dollar-denominated securities of foreign issuers without limit. The Fund may also invest in derivative securities for hedging purposes or to increase the return on its investments. The Fund may also invest in credit-linked notes, credit-linked trust certificates, structured notes, or other instruments evidencing interests in special purpose vehicles, trusts, or other entities that hold or represent interests in fixed-income securities. The Fund may also enter into reverse repurchase agreements and dollar rolls. The Fund may invest up to 20% of its net assets in fixed-income securities that are rated below investment grade by at least one of the recognized rating agencies or in unrated securities of equivalent credit quality. The Fund may invest up to 15% of its net assets in collateralized debt obligations (""CDOs""), of which 10% (as a percentage of the Fund's net assets) may be in collateralized loan obligations (""CLOs"").
CDOs are types of asset-backed securities. CLOs are ordinarily issued by a trust or other special purpose entity and are typically collateralized by a pool of loans, which may include, among others, domestic and non-U.S. senior secured loans, senior unsecured loans, and subordinate corporate loans, including loans that may be rated below investment grade or equivalent unrated loans, held by such issuer. The Fund is a ""feeder"" fund that invests all of its assets in a corresponding ""master"" portfolio, the Master Total Return Portfolio (previously defined as the ""Master Portfolio""), a series of the Master Bond LLC (the ""Master LLC""), a mutual fund that has the same investment objectives and strategies as the Fund. All investments will be made at the level of the Master Portfolio. This structure is sometimes called a ""master/feeder"" structure.
The Fund's investment results will correspond directly to the investment results of the underlying Master Portfolio in which it invests. For simplicity, this prospectus uses the term ""Fund"" to include the Master Portfolio. The Fund may seek to provide exposure to the investment returns of real assets that trade in the commodity markets through investment in commodity-linked derivative instruments and investment vehicles that exclusively invest in commodities such as ETFs, which are designed to provide this exposure without direct investment in physical commodities. The Fund may also gain exposure to commodity markets by investing, through the Master Portfolio, up to 25% of its total assets in the Subsidiary, a wholly owned subsidiary of the Master Portfolio formed in the Cayman Islands, which invests primarily in commodity-related instruments."
C000037618 Holdings
Top 10 holdings of BlackRock Total Return Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Federal National Mortgage Association | 4.84% |
| Blackrock Liquidity Funds | 3.89% |
| Federal National Mortgage Association | 2.50% |
| Federal National Mortgage Association | 1.73% |
| Federal National Mortgage Association | 1.64% |
| Ishares Trust | 1.34% |
| Federal Home Loan Mortgage Corp. | 1.33% |
| Federal National Mortgage Association | 1.10% |
| Blackrock ETF Trust Ii | 1.10% |
| Blackrock Funds Iii | 1.09% |
C000037618 Portfolio Allocation
Asset-class allocation of BlackRock Total Return Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 60.4% |
| Fixed Income | 40.3% |
| Cash & Equivalents | 5.0% |
| Equity | 4.3% |
| Loans | 2.0% |
C000037618 Performance
Total returns for C000037618 (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 4.7% |
| 3 years (annualised) | 4.4% |
| 5 years (annualised) | 0.1% |
C000037618 Risk Information
Risk metrics for C000037618, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.6%
C000037618 Costs and Fees
C000037618 costs about $60 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.60%
- Gross expense ratio: 0.65%
- Portfolio turnover: 595%
- Brokerage commissions: 0.32 bps of average net assets (SEC N-CEN)
C000037618 Cashflows
Over the 12 months to 2026-06, BlackRock Total Return Fund had net outflows of $651.19M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $20.98M |
| 2026-05 | $159.09M |
| 2026-04 | $43.56M |
| 2026-03 | $92.06M |
| 2026-02 | −$559.29M |
| 2026-01 | $74.49M |
C000037618 Debt Constituents
Largest debt holdings of BlackRock Total Return Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Spain, Kingdom Of - Ministerio De Economia Y Hacienda | 0.91% |
| Discovery Global Holdings, Inc. | 0.63% |
| United States Of America - Bureau Of The Public Debt | 0.56% |
| Eqt Corp. | 0.54% |
| Ministero Dell'economia E Delle Finanze - Dipartimento Del Tesoro | 0.51% |
| United States Of America - Bureau Of The Public Debt | 0.51% |
| United States Of America - Bureau Of The Public Debt | 0.43% |
| Panama, Republic Of - Ministry Of Planning And Economic Policy | 0.34% |
| Eqt Corp. | 0.32% |
| Diamondback Energy, Inc. | 0.30% |
C000037618 Prospectus and SEC Filings
Official BlackRock Total Return Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-01-27
- Prospectus (485BPOS) — filed 2025-01-27
- Prospectus (485BPOS) — filed 2024-01-25
- Portfolio holdings (N-PORT) — filed 2026-08-28
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2024-12-10
- Annual census (N-CEN) — filed 2023-12-11
- Annual census (N-CEN) — filed 2022-12-09
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.