BlackRock California Municipal Opportunities Fund
Data updated: 2026-07-24
C000011299 — BlackRock California Municipal Opportunities Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Municipal - National Bond · $2.44B AUM · 0.56% expense ratio · 3.3% 1-yr return. From SEC regulatory filings.
C000011299 Fund Overview
BlackRock California Municipal Opportunities Fund is a US mutual fund managed by BlackRock California Municipal Series Trust, categorised as Long Municipal - National 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 California Municipal Series Trust
- Category: Long Municipal - National Bond
- Assets under management: $2.44B
- 1-year return: 3.3%
- SEC CIK: 0000765199
- SEC series ID: S000004030
- Share class ID: C000011299
C000011299 Holdings
Top 10 holdings of BlackRock California Municipal Opportunities Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury | 4.70% |
| California Community Choice Financing Authority | 2.65% |
| California Community Choice Financing Authority | 2.20% |
| California Housing Finance Agency | 2.04% |
| iShares California Muni Bond ETF | 2.02% |
| California Community Choice Financing Authority | 1.98% |
| California State Public Works Board | 1.82% |
| County of Sacramento CA Airport System Revenue | 1.56% |
| California State University | 1.42% |
| City of San Francisco CA Public Utilities Commission Water Revenue | 1.34% |
C000011299 Portfolio Allocation
Asset-class allocation of BlackRock California Municipal Opportunities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 92.8% |
| Cash & Equivalents | 5.2% |
| Equity | 2.0% |
C000011299 Performance
Total returns for C000011299 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.5% |
| 1 year | 3.3% |
| 3 years (annualised) | 4.0% |
| 5 years (annualised) | 1.6% |
C000011299 Risk Information
Risk metrics for C000011299, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.7%
C000011299 Costs and Fees
C000011299 costs about $56 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.56%
- Gross expense ratio: 0.56%
- Portfolio turnover: 117%
- Brokerage commissions: 0.05 bps of average net assets (SEC N-CEN)
C000011299 Cashflows
Over the 12 months to 2026-02, BlackRock California Municipal Opportunities Fund had net inflows of $42.31M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $12.99M |
| 2026-01 | $39.82M |
| 2025-12 | $13.00M |
| 2025-11 | $2.47M |
| 2025-10 | $3.16M |
| 2025-09 | $27.80M |
C000011299 Debt Constituents
Largest debt holdings of BlackRock California Municipal Opportunities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| California Community Choice Financing Authority | 2.65% |
| California Community Choice Financing Authority | 2.20% |
| California Housing Finance Agency | 2.04% |
| California Community Choice Financing Authority | 1.98% |
| California State Public Works Board | 1.82% |
| County of Sacramento CA Airport System Revenue | 1.56% |
| California State University | 1.42% |
| City of San Francisco CA Public Utilities Commission Water Revenue | 1.34% |
| Regents of the University of California Medical Center Pooled Revenue | 1.21% |
| California Community Choice Financing Authority | 1.20% |
C000011299 Prospectus and SEC Filings
Official BlackRock California Municipal Opportunities Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Municipal - National 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.