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SPDR Portfolio Mortgage Backed Bond (SPMB)

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Upturn Advisory Summary
10/23/2025: SPMB (1-star) has a low Upturn Star Rating. Not recommended to BUY.
Analysis of Past Performance
Type ETF | Historic Profit 9.77% | Avg. Invested days 55 | Today’s Advisory Consider higher Upturn Star rating |
Upturn Star Rating ![]() | Upturn Advisory Performance | ETF Returns Performance |
Key Highlights
Volume (30-day avg) - | Beta 1.14 | 52 Weeks Range 20.64 - 22.22 | Updated Date 06/30/2025 |
52 Weeks Range 20.64 - 22.22 | Updated Date 06/30/2025 |
Upturn AI SWOT
SPDR Portfolio Mortgage Backed Bond
ETF Overview
Overview
The SPDR Portfolio Mortgage Backed Bond ETF (SPMB) seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the Bloomberg U.S. Mortgage Backed Securities (MBS) Index. It focuses on mortgage-backed securities issued by U.S. agencies.
Reputation and Reliability
State Street Global Advisors (SSGA) is a well-established and reputable asset manager with a long track record of managing ETFs.
Management Expertise
SSGA has a dedicated team of fixed-income professionals with expertise in managing mortgage-backed securities.
Investment Objective
Goal
The fund seeks to track the performance of the Bloomberg U.S. Mortgage Backed Securities (MBS) Index.
Investment Approach and Strategy
Strategy: The ETF employs a 'replication' strategy, meaning it invests in all or substantially all of the securities in the underlying index in proportion to their weighting in the index.
Composition The ETF holds mortgage-backed securities issued by U.S. agencies, such as Fannie Mae, Freddie Mac, and Ginnie Mae.
Market Position
Market Share: SPMB holds a portion of the market share within the mortgage-backed securities ETF category.
Total Net Assets (AUM): 4714000000
Competitors
Key Competitors
- iShares MBS ETF (MBB)
- Vanguard Mortgage-Backed Securities ETF (VMBS)
- AGNC Investment Corp. (AGNC)
Competitive Landscape
The mortgage-backed securities ETF market is dominated by a few large players. SPMB offers a low-cost option, which is its main advantage. However, its AUM is smaller than its competitors, potentially impacting liquidity.
Financial Performance
Historical Performance: Historical performance data needs to be retrieved from financial sources.
Benchmark Comparison: Benchmark comparison data needs to be retrieved from financial sources.
Expense Ratio: 0.04
Liquidity
Average Trading Volume
SPMB generally exhibits moderate trading volume, allowing investors to buy and sell shares relatively easily.
Bid-Ask Spread
The bid-ask spread for SPMB is typically tight, reflecting its decent liquidity and the efficiency of the ETF market.
Market Dynamics
Market Environment Factors
Interest rate movements, housing market trends, and government policy changes significantly impact the performance of SPMB.
Growth Trajectory
SPMB's growth is tied to the overall demand for mortgage-backed securities and the prevailing interest rate environment. Changes may occur to holdings and strategy to address market conditions
Moat and Competitive Advantages
Competitive Edge
SPMB's competitive advantage lies primarily in its low expense ratio, making it an attractive option for cost-conscious investors. It offers a diversified exposure to the U.S. mortgage-backed securities market. State Street's expertise in managing fixed-income portfolios also contributes to its appeal. However, it faces stiff competition from larger ETFs with greater liquidity.
Risk Analysis
Volatility
SPMB's volatility is generally moderate, reflecting the relatively stable nature of mortgage-backed securities.
Market Risk
SPMB is exposed to interest rate risk (rising rates can decrease bond values) and credit risk (risk of default on mortgage payments).
Investor Profile
Ideal Investor Profile
SPMB is suitable for investors seeking income and diversification through exposure to the U.S. mortgage-backed securities market.
Market Risk
SPMB is well-suited for long-term investors seeking a passive, low-cost way to gain exposure to mortgage-backed securities.
Summary
The SPDR Portfolio Mortgage Backed Bond ETF (SPMB) provides exposure to the U.S. mortgage-backed securities market through a low-cost, passively managed fund. It aims to track the Bloomberg U.S. Mortgage Backed Securities Index, offering diversification and income potential. While its AUM and liquidity are lower than some competitors, its low expense ratio makes it a compelling choice for cost-conscious investors. Investors should be aware of the inherent interest rate and credit risks associated with mortgage-backed securities.
Peer Comparison
Sources and Disclaimers
Data Sources:
- State Street Global Advisors Website
- Bloomberg
- Morningstar
Disclaimers:
The data and analysis provided are for informational purposes only and should not be considered investment advice. Market share data is based on available information and may be subject to change. Past performance is not indicative of future results. Investment decisions should be made after consulting with a qualified financial advisor.
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.
About SPDR Portfolio Mortgage Backed Bond
Exchange NYSE ARCA | Headquaters - | ||
IPO Launch date - | CEO - | ||
Sector - | Industry - | Full time employees - | Website |
Full time employees - | Website | ||
The fund generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index and in securities that the Adviser determines have economic characteristics that are substantially identical to the economic characteristics of the securities that comprise the index. The index is designed to measure the performance of the U.S. agency mortgage pass-through segment of the U.S. investment grade bond market.

Note: This website is maintained by Upturn Corporation, which is an investment adviser registered with the U.S. Securities and Exchange Commission. Such registration does not imply a certain level of skill or training. Investing in securities has risks. Past performance is no guarantee of future returns. No assurance is provided as to any particular investment return, and you may lose money using our services. You are strongly advised to consult appropriate counsel before making any investments in companies you learn about through our services. You should obtain appropriate legal, tax, investment, accounting, and other advice that takes into account your investment portfolio and overall financial situation. You are solely responsible for conducting due diligence on a potential investment. We do not affect trades for you. You will select your own broker through which to transact. Investments are not FDIC insured, they are not guaranteed, and they may lose value. Please see the Privacy Policy, Terms of Use, and Disclosure for more information.
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