SPMB — SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF
Data updated: 2026-05-28
SPMB — SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Securitized (MBS/ABS/CMBS) Bond · $6.90B AUM · 0.04% expense ratio · 5.7% 1-yr return. From SEC regulatory filings.
SPMB Fund Overview
SPMB — SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF is a US ETF managed by SPDR Series Trust, 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 ETF
- Manager: SPDR Series Trust
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $6.90B
- 1-year return: 5.7%
- Ticker: SPMB
- SEC CIK: 0001064642
- SEC series ID: S000022922
- Share class ID: C000066453
SPMB Holdings
Top 10 holdings of SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| State Street Global Advisors | 7.49% |
| Freddie Mac | 0.92% |
| Freddie Mac | 0.89% |
| Fannie Mae | 0.83% |
| Freddie Mac | 0.64% |
| Government National Mortgage Association | 0.62% |
| Freddie Mac | 0.60% |
| Umbs, Tba | 0.60% |
| Fannie Mae | 0.54% |
| Government National Mortgage Association | 0.52% |
SPMB Portfolio Allocation
Asset-class allocation of SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 98.2% |
| Cash & Equivalents | 7.5% |
SPMB Performance
Total returns for SPMB (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.5% |
| 1 year | 5.7% |
| 3 years (annualised) | 4.1% |
| 5 years (annualised) | 0.4% |
SPMB Risk Information
Risk metrics for SPMB, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.7%
SPMB Costs and Fees
SPMB costs about $4 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.04%
- Gross expense ratio: 0.04%
- Portfolio turnover: 12%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
SPMB Cashflows
Over the 12 months to 2026-03, SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF had net inflows of $856.74M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $80.81M |
| 2026-02 | $117.33M |
| 2026-01 | $69.70M |
| 2025-12 | $136.80M |
| 2025-11 | $49.47M |
| 2025-10 | $92.41M |
SPMB Debt Constituents
No individual debt constituents are reported in SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF's latest SEC N-PORT filing.
SPMB Prospectus and SEC Filings
Official SPDR(R) Bloomberg Barclays Mortgage Backed Bond ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
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.