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Upturn AI Summary
SPDR® Portfolio Aggregate Bond ETF(SPAB)
Advisory History & Simulated Performance *
*as per simulation (see disclosures)- ALL
- 1Y
- 1M
- 1W
- BUY Advisory
- SELL Advisory (Profit)
- SELL Advisory (Loss)
- Profit
- Loss
- PASS (Skip)
Advisory Performance History (Simulated)
Upturn Advisory & Investor View for SPAB
09/25/2026: SPAB (2-star) is currently NOT-A-BUY. Pass it for now.
SPAB provides cost-effective, broad exposure to the U.S. investment-grade bond market by tracking the Bloomberg U.S. Aggregate Bond Index. Its key strengths include an extremely low expense ratio, high liquidity, and the backing of State Street Global Advisors. It serves as a foundational core holding for investors aiming to balance equity risk with fixed-income stability. The primary risks to monitor include interest rate volatility and inflation, which directly affect the fund's price and real returns. This ETF is well-suited for long-term, risk-conscious investors who prioritize stability and income over aggressive growth.
How to Read the Upturn Advisory
The Upturn Star Rating and the current BUY, SELL, or PASS advisory are generated by Upturn’s AI advisory engine based on proprietary signal analysis, price behavior, advisory history, and historical signal performance.
ETF holdings, costs, diversification, valuation, risks, and market conditions provide supporting context about the fund.
Investor Fit
| Investor style | Fit | Why |
|---|---|---|
| Growth investor | Weak fit | Bond ETFs typically offer lower capital appreciation potential compared to equities. |
| Momentum investor | Weak fit | This fund is designed for long-term stability rather than capturing short-term market momentum. |
| Value investor | Mixed fit | Investors may find value in the yield component, though it does not offer the price appreciation typical of value stocks. |
| Dividend/Income investor | Strong fit | The fund provides consistent monthly income through regular interest payments from its underlying holdings. |
| Low-risk investor | Strong fit | It offers broad diversification across investment-grade bonds, which helps mitigate individual issuer risk. |
Investor Profile
Ideal Investor Profile
The ideal investor is someone seeking a core, conservative fixed-income holding for a balanced portfolio.
Suitability
SPAB is best suited for long-term investors looking for a passive, low-cost way to gain exposure to the U.S. bond market.
Risk Profile
| Risk factor | Level | Why it matters |
|---|---|---|
| Volatility | Low | As a broad bond fund, it is generally less volatile than equity markets. |
| Market risk | Medium | Changes in interest rates will directly impact the price of the bonds held in the portfolio. |
| Concentration | Low | The fund is broadly diversified across thousands of individual bond issues. |
| Tracking/expense | Low | The low expense ratio and passive strategy minimize the risk of significant tracking error. |
| Liquidity | Low | High trading volumes ensure that liquidity risk is minimal for individual investors. |
| Business/sector quality | Low | The fund holds investment-grade securities, which carry a lower risk of default. |
Risk Analysis
Volatility
SPAB exhibits low historical volatility, characteristic of high-quality, investment-grade bond portfolios.
Market Risk
The fund is primarily exposed to interest rate risk, where bond prices fall as market interest rates rise.
What the ETF Owns
| Exposure Type | Exposure | Weight (%) | Retail Investor Read |
|---|---|---|---|
| Fixed-income type | U.S. Treasury Securities | 43 | Provides high credit quality and safety, forming the core base of the portfolio. |
| Fixed-income type | Mortgage-Backed Securities (MBS) | 28 | Offers additional yield compared to Treasuries while maintaining agency-backed credit quality. |
| Fixed-income type | Investment-Grade Corporate Bonds | 27 | Provides incremental yield potential from high-quality corporate issuers. |
| Cash/collateral | Cash and Equivalents | 2 | Minimal cash held for operational liquidity and trade settlement. |
Price Behavior

Flat / Range-Bound
The stock price has been trading within a narrow range with minimal directional movement.

Very Smooth
The stock has followed a highly orderly price path with minimal short-term disruption.
Analysis of Past Performance
Type ETF | Historic Profit 7.46% | Avg. Invested days 58 | Today’s Advisory PASS |
Upturn Advisory Rating ![]() | Upturn Advisory Performance | ETF Returns Performance |
ETF Fundamentals 
Source: EOD Historical Data • Updated Sep 27, 2026
Fund Basics
| Metric | Value |
|---|---|
| Fund Size (AUM) | $9.89B |
| Issuer | State Street Investment Management |
| Expense Ratio | 0.03% |
| Distribution Yield | 4.12% |
| Inception | May 23, 2007 |
Performance
| Period | Total Return |
|---|---|
| YTD | -2.11% |
| 1 Year | -1.02% |
| 3 Year | +4.18% |
| 5 Year | -0.60% |
| 10 Year | +1.17% |
Risk Metrics
| Metric | Value |
|---|---|
| 1Y Volatility | 3.24% |
| 3Y Volatility | 5.59% |
| 3Y Sharpe Ratio | -0.07 |
Ratings
| Metric | Value |
|---|---|
| Morningstar Rating | ★★★★★ |
Top Sectors
| Sector | Weight |
|---|---|
| Basic Materials | 0.00% |
| Consumer Cyclicals | 0.00% |
| Financial Services | 0.00% |
| Real Estate | 0.00% |
Asset Allocation
Portfolio Characteristics
| Metric | Value |
|---|---|
| Holdings Turnover | 12.0% |
Top Holdings
| Holding | Weight |
|---|---|
| State Street Master Funds - State Street U.S. Government Money Market Portfolio | 3.77% |
Upturn AI Summary
AI Summarization is directionally correct and might not be accurate.
Summarized information shown could be a few years old and not current.
Fundamental Rating based on AI could be based on old data.
AI-generated summaries may have inaccuracies (hallucinations). Please verify the information before taking action.

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