CORB — AB Core Bond ETF
Data updated: 2026-07-24
CORB — AB Core Bond ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Intermediate Total / Aggregate Bond · $1.06B AUM · 0.28% expense ratio. From SEC regulatory filings.
CORB Fund Overview
CORB — AB Core Bond ETF is a US ETF managed by AB Active ETFs, Inc., categorised as Intermediate Total / Aggregate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: AB Active ETFs, Inc.
- Category: Intermediate Total / Aggregate Bond
- Assets under management: $1.06B
- Ticker: CORB
- SEC CIK: 0001496608
- SEC series ID: S000093945
- Share class ID: C000262411
CORB Holdings
Top 10 holdings of AB Core Bond ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury | 3.95% |
| United States Treasury | 2.81% |
| United States Treasury | 2.27% |
| United States Treasury | 2.22% |
| United States Treasury | 2.18% |
| United States Treasury | 2.17% |
| Umbs, Tba | 2.15% |
| United States Treasury | 2.09% |
| United States Treasury | 1.72% |
| United States Treasury | 1.62% |
CORB Portfolio Allocation
Asset-class allocation of AB Core Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 75.0% |
| Securitized | 30.9% |
| Cash & Equivalents | 3.9% |
CORB Performance
Total returns for CORB (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.2% |
CORB Costs and Fees
CORB costs about $28 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.28%
- Gross expense ratio: 0.28%
- Portfolio turnover: 33%
- Brokerage commissions: 0.06 bps of average net assets (SEC N-CEN)
CORB Cashflows
Over the 12 months to 2026-02, AB Core Bond ETF had net inflows of $88.63M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $57.11M |
| 2026-01 | $4.50M |
| 2025-12 | $8.99M |
| 2025-11 | $18.02M |
CORB Debt Constituents
Largest debt holdings of AB Core Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 2.81% |
| United States Treasury | 2.27% |
| United States Treasury | 2.22% |
| United States Treasury | 2.18% |
| United States Treasury | 2.17% |
| United States Treasury | 2.09% |
| United States Treasury | 1.72% |
| United States Treasury | 1.62% |
| United States Treasury | 1.21% |
| United States Treasury | 1.16% |
CORB Prospectus and SEC Filings
Official AB Core Bond ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Intermediate Total / Aggregate 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.