SPMB — SPDR® Bloomberg Barclays Mortgage Backed Bond ETF
Data updated: 2026-09-11
SPMB — SPDR® Bloomberg Barclays Mortgage Backed Bond ETF. Long Securitized (MBS/ABS/CMBS) Bond · $7.07B AUM. Holdings, fees, performance and SEC filings.
SPMB Fund Overview
SPMB — SPDR® 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: $7.07B
- 1-year return: 5.2%
- Ticker: SPMB
- SEC CIK: 0001064642
- SEC series ID: S000022922
- Share class ID: C000066453
SPMB Holdings
Top 10 holdings of SPDR® 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 | 8.19% |
| Freddie Mac | 1.17% |
| Fannie Mae | 0.79% |
| Freddie Mac | 0.76% |
| Umbs, Tba | 0.63% |
| Freddie Mac | 0.61% |
| Freddie Mac | 0.55% |
| Government National Mortgage Association | 0.55% |
| Fannie Mae | 0.51% |
| Fannie Mae | 0.49% |
SPMB Portfolio Allocation
Asset-class allocation of SPDR® Bloomberg Barclays Mortgage Backed Bond ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 98.1% |
| Cash & Equivalents | 8.2% |
SPMB Performance
Total returns for SPMB (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 1.1% |
| 1 year | 5.2% |
| 3 years (annualised) | 4.5% |
| 5 years (annualised) | 0.4% |
SPMB Risk Information
Risk metrics for SPMB, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.1%
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: 1107%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
SPMB Cashflows
Over the 12 months to 2026-06, SPDR® Bloomberg Barclays Mortgage Backed Bond ETF had net inflows of $857.05M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $124.56M |
| 2026-05 | $53.37M |
| 2026-04 | $17.99M |
| 2026-03 | $80.81M |
| 2026-02 | $117.33M |
| 2026-01 | $69.70M |
SPMB Debt Constituents
No individual debt constituents are reported in SPDR® Bloomberg Barclays Mortgage Backed Bond ETF's latest SEC N-PORT filing.
SPMB Prospectus and SEC Filings
Official SPDR® Bloomberg Barclays Mortgage Backed Bond ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-10-24
- Prospectus (485BPOS) — filed 2024-10-24
- Prospectus supplement (497) — filed 2024-11-01
- Portfolio holdings (N-PORT) — filed 2026-08-28
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-26
- Annual census (N-CEN) — filed 2026-09-11
- Annual census (N-CEN) — filed 2025-09-12
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.