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PIMCO Mortgage-Backed Securities Active Exchange-Traded Fund (PMBS)



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Upturn Advisory Summary
08/14/2025: PMBS (1-star) has a low Upturn Star Rating. Not recommended to BUY.
Analysis of Past Performance
Type ETF | Historic Profit 2.77% | Avg. Invested days 44 | Today’s Advisory Consider higher Upturn Star rating |
Upturn Star Rating ![]() ![]() | Upturn Advisory Performance ![]() | ETF Returns Performance ![]() |
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Key Highlights
Volume (30-day avg) - | Beta - | 52 Weeks Range 46.29 - 49.43 | Updated Date - |
52 Weeks Range 46.29 - 49.43 | Updated Date - |
Upturn AI SWOT
PIMCO Mortgage-Backed Securities Active Exchange-Traded Fund
ETF Overview
Overview
The PIMCO Mortgage-Backed Securities Active Exchange-Traded Fund (MBB) seeks to maximize current income, consistent with prudent investment management. It invests primarily in mortgage-backed securities, aiming for a higher yield than traditional government bond ETFs.
Reputation and Reliability
PIMCO is a well-regarded, experienced investment management firm known for its fixed-income expertise and strong track record.
Management Expertise
PIMCO's management team possesses extensive knowledge and experience in managing mortgage-backed securities and navigating the fixed-income market.
Investment Objective
Goal
To maximize current income, consistent with prudent investment management, by investing primarily in mortgage-backed securities.
Investment Approach and Strategy
Strategy: The ETF is actively managed and does not track a specific index. It seeks to outperform traditional mortgage-backed securities indices through active security selection and sector allocation.
Composition Primarily mortgage-backed securities, including agency mortgage-backed securities (MBS) and potentially some commercial mortgage-backed securities (CMBS) and other related instruments.
Market Position
Market Share: MBB's market share is substantial, but not dominant, within the broader fixed-income ETF market. It holds a leading position within the specialized mortgage-backed securities ETF segment.
Total Net Assets (AUM): 2490000000
Competitors
Key Competitors
- iShares MBS ETF (MBB)
- SPDR Portfolio Mortgage Backed Securities ETF (SPMB)
- Vanguard Mortgage-Backed Securities ETF (VMBS)
Competitive Landscape
The competitive landscape is moderately concentrated, with a few major players dominating the market. MBB benefits from PIMCO's active management expertise and brand recognition, potentially leading to higher returns compared to passively managed competitors. However, active management also implies higher expense ratios. MBB holds a smaller Market Share than MBB.
Financial Performance
Historical Performance: Historical performance varies based on interest rate environments and credit market conditions. Analyzing past returns provides insights into the ETF's sensitivity to these factors.
Benchmark Comparison: Performance should be compared to a relevant mortgage-backed securities index, such as the Bloomberg Barclays US MBS Index, to assess the value added by PIMCO's active management.
Expense Ratio: 0.36
Liquidity
Average Trading Volume
The average trading volume of MBB is generally sufficient for most investors, indicating reasonable liquidity.
Bid-Ask Spread
The bid-ask spread for MBB is typically tight, reflecting good liquidity and minimizing trading costs.
Market Dynamics
Market Environment Factors
Economic growth, inflation expectations, and Federal Reserve policy (particularly regarding interest rates and mortgage-backed securities purchases) significantly influence MBB's performance.
Growth Trajectory
MBB's growth trajectory is closely tied to the overall health of the housing market and the attractiveness of mortgage-backed securities as an asset class. Changes in interest rates or the creditworthiness of borrowers can affect investor demand and the ETF's holdings.
Moat and Competitive Advantages
Competitive Edge
MBB leverages PIMCO's active management expertise in the mortgage-backed securities market, which includes proprietary research and risk management techniques. PIMCO's experience in analyzing complex mortgage structures provides a potential advantage in identifying undervalued securities and managing credit risk. The ability to adjust the portfolio based on changing market conditions gives MBB the potential to outperform passive mortgage-backed securities ETFs. This active approach also seeks to maximize income while maintaining a prudent level of risk.
Risk Analysis
Volatility
MBB's volatility is generally lower than equity ETFs but higher than government bond ETFs, reflecting the credit and interest rate risks associated with mortgage-backed securities.
Market Risk
MBB is exposed to interest rate risk (rising rates can decrease the value of MBS) and credit risk (borrower defaults can reduce the value of the portfolio).
Investor Profile
Ideal Investor Profile
The ideal investor is seeking income, diversification within their fixed-income portfolio, and potentially higher yields than government bonds. Investors should understand the risks associated with mortgage-backed securities.
Market Risk
MBB is suitable for long-term investors seeking income and diversification, although active management might appeal to those looking to outperform passive strategies.
Summary
PIMCO's MBB ETF offers exposure to the mortgage-backed securities market with the potential for higher income through active management. It is sensitive to interest rate fluctuations and credit risk. Investors should carefully consider their risk tolerance and investment goals before investing. The fund's performance hinges on PIMCO's ability to navigate the complex mortgage market effectively and manage risks appropriately.
Peer Comparison
Sources and Disclaimers
Data Sources:
- PIMCO Official Website
- ETF.com
- Morningstar
- Bloomberg
Disclaimers:
The data and analysis provided are for informational purposes only and should not be considered financial advice. Investment decisions should be based on individual circumstances and consultation with a qualified financial advisor. Market data is subject to change.
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 PIMCO Mortgage-Backed Securities Active Exchange-Traded Fund
Exchange NASDAQ | Headquaters - | ||
IPO Launch date - | CEO - | ||
Sector - | Industry - | Full time employees - | Website |
Full time employees - | Website |
The fund seeks to achieve its investment objective by investing under normal circumstances at least 80% of its assets in a diversified portfolio of mortgage-related fixed income instruments of varying maturities, which may be represented by forwards or derivatives such as options, futures contracts or swap agreements.

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