BlackRock Short Obligations Fund
Data updated: 2026-09-25
C000129315 — BlackRock Short Obligations Fund. Alternative · $958.66M AUM · 0.35% expense ratio. Holdings, fees, performance and SEC filings.
C000129315 Fund Overview
BlackRock Short Obligations Fund is a US mutual fund managed by Blackrock Funds, categorised as Alternative. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Blackrock Funds
- Category: Alternative
- Assets under management: $958.66M
- 1-year return: 4.2%
- SEC CIK: 0000844779
- SEC series ID: S000038550
- Share class ID: C000129315
C000129315 Investment Objective and Strategy
BlackRock Short Obligations Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Blackrock Funds.
Investment objective
The investment objective of BlackRock Short Obligations Fund (“Short Obligations Fund” or the “Fund”), a series of BlackRock Funds SM (the “Trust”), is to seek current income consistent with preservation of capital.
Principal investment strategy
Under normal market conditions, Short Obligations Fund will invest in U.S. dollar-denominated investment grade and short-term fixed and floating rate debt securities maturing in three years or less (with certain exceptions) and will maintain a dollar-weighted average maturity of 180 days or less and a dollar-weighted average life of 365 days or less. To achieve its investment objective, the Fund may invest in corporate securities, mortgage- and asset-backed securities, and money market instruments, including government, U.S. and foreign bank and commercial obligations, obligations issued by or on behalf of states, territories and possessions of the United States, the District of Columbia and their respective authorities, agencies, instrumentalities and political subdivisions and derivative securities such as beneficial interests in municipal trust certificates and partnership trusts, and repurchase agreements.
The Fund may invest in variable and floating rate instruments and when-issued and delayed delivery securities. The Fund invests a significant portion of its assets in securities issued by financial services companies, including banks, broker-dealers and insurance companies, and repurchase agreements secured by such obligations. Investment grade securities purchased by the Fund (or the issuers of such securities) will carry a rating of BBB-, or equivalent, or higher by at least one nationally recognized statistical rating organization (NRSRO) and short-term investments (or the issuers of such securities) will carry a rating in the highest two rating categories of at least one NRSRO (e.g., A-2, P-2 or F2 or better by Standard & Poors Ratings Services, Moodys Investors Service, Inc., or Fitch Ratings Inc., respectively), or if such investments are unrated, determined to be of comparable quality by BlackRock, at the time of investment.
C000129315 Holdings
Top 10 holdings of BlackRock Short Obligations Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Banco Santander SA | 1.62% |
| United States of America | 1.39% |
| Marubeni Finance America LLC | 1.36% |
| Mizuho Securities USA LLC | 1.30% |
| Wells Fargo Securities LLC | 1.30% |
| Glencore Funding LLC | 1.25% |
| Athene Global Funding | 1.15% |
| Mitsubishi HC Finance America LLC | 1.06% |
| Goldman Sachs & Co. LLC | 1.04% |
| National Bank of Canada | 1.02% |
C000129315 Portfolio Allocation
Asset-class allocation of BlackRock Short Obligations Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 47.7% |
| Cash & Equivalents | 44.3% |
| Securitized | 8.2% |
C000129315 Performance
Total returns for C000129315 (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 4.2% |
| 3 years (annualised) | 4.9% |
| 5 years (annualised) | 3.4% |
C000129315 Risk Information
Risk metrics for C000129315, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 0.3%
C000129315 Costs and Fees
C000129315 costs about $35 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.35%
- Gross expense ratio: 0.40%
- Portfolio turnover: 59%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
C000129315 Cashflows
Over the 12 months to 2026-04, BlackRock Short Obligations Fund had net outflows of $250.06M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | $2.55M |
| 2026-03 | −$100.65M |
| 2026-02 | $4.70M |
| 2026-01 | $35.31M |
| 2025-12 | $11.34M |
| 2025-11 | −$16.30M |
C000129315 Debt Constituents
Largest debt holdings of BlackRock Short Obligations Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States of America | 1.39% |
| Athene Global Funding | 1.15% |
| Bank of New York Mellon Corp. (The) | 0.97% |
| Morgan Stanley | 0.94% |
| Nationwide Building Society | 0.92% |
| Morgan Stanley Bank NA | 0.92% |
| Siemens Financieringsmaatschappij NV | 0.91% |
| Citibank NA | 0.88% |
| Ubs AG | 0.81% |
| Toyota Motor Credit Corp. | 0.80% |
C000129315 Prospectus and SEC Filings
Official BlackRock Short Obligations Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2024-11-22
- Prospectus (485BPOS) — filed 2023-11-20
- Prospectus supplement (497) — filed 2025-12-02
- Portfolio holdings (N-PORT) — filed 2026-09-25
- Portfolio holdings (N-PORT) — filed 2026-06-26
- Portfolio holdings (N-PORT) — filed 2026-03-27
- Annual census (N-CEN) — filed 2025-10-14
- Annual census (N-CEN) — filed 2024-10-11
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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.