SPAB — State Street SPDR Portfolio Aggregate Bond ETF
US Bonds - Broad Ranked #329 of 458 tracked ETFs · Issued by State Street Investment Management
SPAB Price Performance — Growth of $10,000
Value of a $10,000 investment in SPAB over time, compared with SPY. Both lines are rebased to $10,000 on the first shared date. Based on total returns — prices are adjusted for dividends and splits, so this assumes distributions were reinvested. Hover or tap the chart for exact values.
SPAB Drawdown
The "underwater" chart: SPAB's decline from its highest prior value at each point in time. It shows how deep past losses ran and how long the fund took to recover to break-even.
What If You'd Invested in SPAB?
See what a lump sum in SPAB would have grown to, with the option to add a regular monthly contribution on top. Figures use total returns — dividends are assumed reinvested.
Past performance doesn't predict future results. Assumes contributions on the first trading day of each month, no trading costs or taxes, and reinvested distributions. History is limited to the range published in the site's daily return data.
Overview
The State Street SPDR Portfolio Aggregate Bond ETF (SPAB) is a broad US bond fund issued by State Street Investment Management with $10.2 billion in assets. It holds an ETFValuer grade of C, ranking 5th out of 7 peers in its category and 329th of 458 tracked ETFs overall. The fund’s 0.03% expense ratio matches the category median, while its 4.12% dividend yield sits slightly below the 4.20% median. Top holdings represent only 7.6% of assets, with the largest position being State Street Global Advisors at 2.4%.
SPAB’s price of $24.99 places it at 7.1% of its 52-week range, reflecting a recent 1D return of 0.00% and a 1W decline of 0.16%. Short-term performance shows modest losses over one month (-0.08%) and three months (-0.26%), contrasting with a 1-year return of +1.30% that trails the category median of +1.32%. The fund’s 3-year return of +13.62% indicates longer-term growth despite recent stagnation. Its grade has remained unchanged at C over the last 35 tracked days, and price history is available for 3.0 years.
With a beta of 1.00, the fund moves in line with the market, accompanied by a Very Low annualized volatility of 3.62%. A Sharpe ratio of -1.02 suggests poor risk-adjusted returns relative to the risk-free rate, while a maximum drawdown of -4.87% highlights recent downside pressure. Liquidity is characterized by an average daily volume of 2,455,306 shares but a wide bid/ask spread of 8.59%, indicating potential trading costs. These metrics collectively describe a fund with low price fluctuation but significant recent underperformance and liquidity friction.
AI-generated summary based on the data on this page.
SPAB Top Holdings
| # | Holding | % of Net Assets | Value |
|---|---|---|---|
| 1 | State Street Global Advisors | 2.39% | $230M |
| 2 | State Street Global Advisors | 1.09% | $105M |
| 3 | State Street Global Advisors | 0.82% | $79M |
| 4 | United States Treasury | 0.79% | $76M |
| 5 | United States Treasury | 0.44% | $42M |
| 6 | United States Treasury | 0.43% | $41M |
| 7 | United States Treasury | 0.42% | $41M |
| 8 | United States Treasury | 0.40% | $38M |
| 9 | United States Treasury | 0.40% | $38M |
| 10 | United States Treasury | 0.39% | $38M |
Holdings as of 2026-06-30 per the fund's most recent SEC N-PORT-P filing. Top 10 holdings make up 7.6% of net assets — a rough gauge of concentration risk (the higher this figure, the more the fund's return depends on a handful of names). To see how SPAB's holdings overlap with other ETFs you own or are considering, check the Stock Overlap tool.
Which Funds Overlap With SPAB
Holding two funds that own the same companies adds cost and complexity without adding much diversification. These tracked ETFs share the most names with SPAB's top 10 — BCI overlaps most, holding 2 of the same companies as SPAB's top 10 (7.6% of SPAB's assets).
| ETF | Name | Shared Companies | SPAB Weight | Examples |
|---|---|---|---|---|
| BCI | abrdn Bloomberg All Commodity Strategy K-1 Free ETF | 2 | 7.6% | United States Treasury, State Street Global Advisors |
| SPDW | State Street SPDR Portfolio Developed World ex-US ETF | 1 | 4.3% | State Street Global Advisors |
| SPEM | State Street SPDR Portfolio Emerging Markets ETF | 1 | 4.3% | State Street Global Advisors |
| SDY | State Street SPDR S&P Dividend ETF | 1 | 4.3% | State Street Global Advisors |
| KRE | State Street SPDR S&P Regional Banking ETF | 1 | 4.3% | State Street Global Advisors |
Compares the top 10 reported holdings of each fund, so it's a floor on true overlap — two S&P 500 trackers overlap ~100% even when only 10 names are listed. Use the Stock Overlap tool to search by individual company.
Market Backdrop
10-Year Treasury Yield: 4.77% (as of 2026-09-03) — The yield on 10-year US Treasury bonds — the standard "risk-free rate" benchmark used to contextualize this fund’s Sharpe ratio and returns.
CBOE Volatility Index (VIX): 14.32 (as of 2026-09-03) — A real-time gauge of expected S&P 500 volatility over the next 30 days — useful context for this fund’s own volatility label.
Federal Funds Rate: 3.63% (as of 2026-08-01) — The Federal Reserve’s target policy rate, which anchors short-term borrowing costs across the economy.
What SPAB's Fees Cost You
SPAB charges an expense ratio of 0.03% a year, deducted automatically from the fund's value. Small percentages compound into real money — adjust the figures below to see the impact on your own numbers.
Assumes a constant gross return and no additional contributions — a simplification, but it isolates exactly what the expense ratio costs. Try the full fee calculator to model contributions and compare any two funds.
SPAB Dividend Income Estimator
SPAB currently yields 4.12%. Enter an amount to see the income that implies, or set a monthly income target to see the investment it would take.
Based on the fund's current trailing yield, which varies with price and distributions — treat it as an estimate, not a guarantee. Yields are not adjusted for tax.
SPAB Liquidity, Domicile & Tax Treatment
Liquidity: Quoted bid/ask spread is 8.59% and average daily volume is 2.5M/day. Tighter spreads and higher volume mean lower round-trip trading costs; this is a live-market snapshot and can widen during volatile sessions. AUM of $10.2B provides ample scale, supporting tight spreads and issuer commitment to keep the fund open.
Domicile & tax treatment: SPAB is a US-domiciled, SEC-registered ('40 Act) exchange-traded fund. Dividends and capital gains distributions are reported to US investors on Form 1099-DIV, and the fund is not subject to the PFIC reporting or UCITS-specific rules that apply to Irish- or Luxembourg-domiciled funds. Non-US investors should note that US-domiciled ETFs are generally subject to 30% US withholding tax on dividends (unless reduced by treaty) and to US estate tax exposure on the position — Irish-domiciled UCITS ETFs tracking the same index often avoid both, which is why non-US residents frequently prefer the UCITS equivalent where one exists. This is general information, not tax advice — consult a tax professional for your situation.
SPAB Performance History
| Period | Return |
|---|---|
| 1-Day | 0.00% |
| 1-Week | -0.16% |
| 1-Month | -0.08% |
| 3-Month | -0.26% |
| 6-Month | -1.14% |
| YTD | -0.24% |
| 1-Year | +1.30% |
| 3-Year | +13.62% |
How SPAB Compares to Other US Bonds - Broad ETFs
| Rank | Grade | Ticker | Name | 1-Year | Exp. Ratio | AUM |
|---|---|---|---|---|---|---|
| #268 | C |
AGG | iShares Core U.S. Aggregate Bond ETF | +1.32% | 0.03% | $138B |
| #269 | C |
BND | Vanguard Total Bond Market Index Fund ETF Shares | +1.28% | 0.03% | $399B |
| #273 | C |
IUSB | iShares Core Universal USD Bond ETF | +1.66% | 0.06% | $43.8B |
| #328 | C |
SCHZ | Schwab U.S. Aggregate Bond ETF | +1.35% | 0.03% | $10.7B |
| #329 | C |
SPAB | State Street SPDR Portfolio Aggregate Bond ETF | +1.30% | 0.03% | $10.2B |
| #334 | C |
FBND | Fidelity Total Bond ETF | +1.54% | 0.36% | $28.2B |
| #368 | C |
BNDW | Vanguard Total World Bond ETF | +1.05% | 0.05% | $1.89B |