State Street(R) SPDR(R) Portfolio Aggregate Bond ETF
SPDR SERIES TRUST · Series S000017334 · 1 share classes
data updated 2026-09-08
Fund profile
As filed in the prospectus · 2025 Q4
The State Street SPDR Portfolio Aggregate Bond ETF (the Fund) seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of an index that tracks the U.S. dollar denominated investment grade bond market.
The fund tracks the Bloomberg U.S. Aggregate Bond Index using a sampling strategy, holding a subset of the index's investment-grade securities—government bonds, corporate bonds, mortgage pass-throughs, and asset-backed securities—selected to replicate the index's risk and return characteristics. Because the fund samples rather than holds all index constituents, its performance may diverge from the index. The fund regularly enters into to-be-announced transactions in mortgage securities, investing cash pending settlement in short-term instruments including affiliated money market funds.
| Share class | Expense ratio |
|---|---|
| SPAB | 0.03% |
Portfolio turnover 17.00% · as of 2025 Q4
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Bonds | 73.20% |
| Securitized | 25.05% |
| Cash & short-term | 4.34% |
Latest quarter
What changed since the fund's previous filing
Largest new: United States Treasury ×6, Government National Mortgage Association, UMBS, TBA
Largest exited: UMBS, TBA, United States Treasury ×5, Government National Mortgage Association ×2
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026
May 2026 and Jun 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-06-30
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 99.4% |
| Floating rate | 0.6% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 0.0% |
| 1-3y | 21.2% |
| 3-5y | 17.8% |
| 5-10y | 18.5% |
| 10y+ | 42.6% |
Based on what filers reported; a filer that never reported a flag also reads as none.
Risk profile
Interest-rate and credit-spread sensitivity, both in years · as of 2026Q2
Most of this fund’s sensitivity is to interest rates, with credit spreads carrying a small fraction as much.
Where the loss would come from. The two shocks are the same size, so this is the balance of the fund's two sensitivities rather than a bet on one moving more.
| Interest rates | 75% |
| Credit spreads | 25% |
Filers report the impact of a 0.01% move only, so the total is our own scaling of that one number and overstates the loss on most bonds — read it as approximate, never as precise. The two sensitivities overlap rather than add up: they measure the same positions against different shocks, which is why the durations above are shown side by side and never summed.
Share of the fund's spread duration carried by each credit tier.
| Investment grade | +1.92 yr |
| High yield | +0.02 yr |
Share of duration at each point, shortest first. A positive figure loses value when spreads widen; a negative one offsets — a credit hedge.
| 3 mo | 0.01 yr | 0% |
| 1 yr | 0.66 yr | 11% |
| 5 yr | 1.68 yr | 28% |
| 10 yr | 2.30 yr | 39% |
| 30 yr | 1.26 yr | 21% |
| 3 mo | 0.00 yr | 0% |
| 1 yr | 0.19 yr | 10% |
| 5 yr | 0.56 yr | 29% |
| 10 yr | 0.75 yr | 39% |
| 30 yr | 0.44 yr | 23% |
The two bands measure the same positions against different shocks and do not add — a Treasury carries rate duration and no spread duration, a floating-rate credit the reverse. Rate tenors are also summed across every currency the fund discloses.
Show the numbers
| Tenor | Rate yrs | IG yrs | HY yrs | IG $/bp | HY $/bp |
|---|---|---|---|---|---|
| 3 mo | +0.01 | +0.00 | +0.00 | $3.1k | $38 |
| 1 yr | +0.66 | +0.18 | +0.00 | $177.0k | $3.2k |
| 5 yr | +1.68 | +0.55 | +0.01 | $529.3k | $8.7k |
| 10 yr | +2.30 | +0.75 | +0.01 | $717.5k | $5.4k |
| 30 yr | +1.26 | +0.44 | +0.00 | $422.4k | $1.3k |
Dollar change per 1bp of spread movement, as filed and sign-anchored. A blank cell was not filed; a zero was.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Value | Shares |
|---|---|---|---|---|
| GVMXX | State Street Global AdvisorsGVMXX | 4.34% | $417.49M | — |
| — | United States Treasury3.50% · due 2028-12-15 | 0.79% | $76.06M | — |
| — | United States Treasury4.38% · due 2028-11-30 | 0.44% | $41.94M | — |
| — | United States Treasury3.88% · due 2031-03-31 | 0.43% | $41.11M | — |
| — | United States Treasury3.50% · due 2028-01-31 | 0.42% | $40.89M | — |
| — | United States Treasury4.25% · due 2034-11-15 | 0.40% | $38.34M | — |
| — | United States Treasury4.25% · due 2035-08-15 | 0.40% | $38.16M | — |
| — | United States Treasury3.38% · due 2027-12-31 | 0.39% | $37.71M | — |
| — | United States Treasury3.75% · due 2028-04-30 | 0.38% | $36.63M | — |
| — | United States Treasury4.38% · due 2034-05-15 | 0.37% | $36.04M | — |
Top 10 positions are 8.36% of net assets, top 25 13.48%, across 1.2K issuers.
See more of this fund's book
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