SPTB — SPDR Portfolio Treasury ETF
Data updated: 2026-09-11
SPTB — SPDR Portfolio Treasury ETF. Intermediate Treasury / Sovereign Bond · $285.45M AUM · 0.03% expense ratio. Holdings, fees, performance and SEC filings.
SPTB Fund Overview
SPTB — SPDR Portfolio Treasury ETF is a US ETF managed by SPDR Series Trust, categorised as Intermediate Treasury / Sovereign 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: Intermediate Treasury / Sovereign Bond
- Assets under management: $285.45M
- 1-year return: 2.7%
- Ticker: SPTB
- SEC CIK: 0001064642
- SEC series ID: S000084968
- Share class ID: C000249829
SPTB Holdings
Top 10 holdings of SPDR Portfolio Treasury ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| State Street Global Advisors | 0.89% |
| United States Treasury | 0.87% |
| United States Treasury | 0.81% |
| United States Treasury | 0.81% |
| United States Treasury | 0.80% |
| United States Treasury | 0.79% |
| United States Treasury | 0.78% |
| United States Treasury | 0.76% |
| United States Treasury | 0.76% |
| United States Treasury | 0.74% |
SPTB Portfolio Allocation
Asset-class allocation of SPDR Portfolio Treasury ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 98.7% |
| Cash & Equivalents | 0.9% |
SPTB Performance
Total returns for SPTB (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.4% |
| 1 year | 2.7% |
| 3 years (annualised) | 4.1% |
SPTB Risk Information
Risk metrics for SPTB, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.1%
SPTB Costs and Fees
SPTB costs about $3 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.03%
- Gross expense ratio: 0.03%
- Portfolio turnover: 20%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
SPTB Cashflows
Over the 12 months to 2026-06, SPDR Portfolio Treasury ETF had net inflows of $196.66M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $14.98M |
| 2026-05 | $83.91M |
| 2026-04 | $9.03M |
| 2026-03 | $24.40M |
| 2026-02 | $6.09M |
| 2026-01 | $0 |
SPTB Debt Constituents
Largest debt holdings of SPDR Portfolio Treasury ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 0.87% |
| United States Treasury | 0.81% |
| United States Treasury | 0.81% |
| United States Treasury | 0.80% |
| United States Treasury | 0.79% |
| United States Treasury | 0.78% |
| United States Treasury | 0.76% |
| United States Treasury | 0.76% |
| United States Treasury | 0.74% |
| United States Treasury | 0.74% |
SPTB Prospectus and SEC Filings
Official SPDR Portfolio Treasury 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 Intermediate Treasury / Sovereign 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.