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iShares Short-Term National Muni Bond ETF (SUB)


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Upturn Advisory Summary
10/30/2025: SUB (1-star) is currently NOT-A-BUY. Pass it for now.
Analysis of Past Performance
|  Type  ETF |  Historic Profit  2.63% |  Avg. Invested days  42 |  Today’s Advisory  PASS  | 
|  Upturn Star Rating   |  Upturn Advisory Performance   3.0 |  ETF Returns Performance   1.0 | 
|  Profits based on simulation |  Last Close 10/30/2025 | 
Key Highlights
|  Volume (30-day avg)  -  |  Beta  0.32  |  52 Weeks Range  102.24 - 106.31  |  Updated Date  06/29/2025  | 
|  52 Weeks Range  102.24 - 106.31  |  Updated Date  06/29/2025  | 
 Upturn AI SWOT
 Upturn AI SWOT 
iShares Short-Term National Muni Bond ETF
ETF Overview
 Overview
 Overview 
The iShares Short-Term National Muni Bond ETF (SUB) seeks to track the investment results of an index composed of investment-grade U.S. municipal bonds with remaining maturities between one month and five years. It primarily focuses on short-term municipal bonds offering tax-exempt income and is suitable for investors looking for a relatively conservative fixed income option.
 Reputation and Reliability
 Reputation and Reliability 
BlackRock, the issuer, is one of the world's largest asset managers with a strong reputation and track record.
 Management Expertise
 Management Expertise 
BlackRock has a highly experienced and reputable management team overseeing their ETF products, including SUB.
Investment Objective
 Goal
 Goal 
The investment goal of SUB is to track the investment results of an index composed of investment-grade U.S. municipal bonds with remaining maturities between one month and five years.
Investment Approach and Strategy
Strategy: SUB aims to track the ICE Short Maturity AMT-Free US National Municipal Index.
Composition The ETF primarily holds a diversified portfolio of short-term, investment-grade municipal bonds issued by states and local governments across the U.S.
Market Position
Market Share: SUB holds a significant market share in the short-term municipal bond ETF sector.
Total Net Assets (AUM): 4321000000
Competitors
 Key Competitors
 Key Competitors 
- Invesco VRDO Tax-Free Weekly ETF (PVI)
- VanEck Short Muni ETF (SMB)
- SPDR Nuveen Bloomberg Short Term Municipal Bond ETF (SHM)
Competitive Landscape
The short-term municipal bond ETF market is competitive, with several issuers offering similar products. SUB benefits from BlackRock's brand recognition and large AUM, which can lead to tighter spreads and greater liquidity. However, other ETFs may have slightly different index methodologies or expense ratios, which could appeal to different investors. SUB's advantage lies in its established presence and liquidity; its disadvantage could be a slightly higher expense ratio compared to some competitors.
Financial Performance
Historical Performance: Historical performance data needs to be obtained from financial data providers and varies over time. A review of the ETF's performance over 1, 3, 5, and 10-year periods would be necessary to understand its track record.
Benchmark Comparison: SUB's performance should be compared to the ICE Short Maturity AMT-Free US National Municipal Index to gauge its tracking effectiveness.
Expense Ratio: 0.07
Liquidity
Average Trading Volume
SUB exhibits relatively high liquidity due to its large AUM, resulting in a robust average trading volume.
Bid-Ask Spread
The bid-ask spread for SUB is generally tight, reflecting its high liquidity and making it cost-effective to trade.
Market Dynamics
Market Environment Factors
Economic indicators such as interest rates, inflation expectations, and the overall health of the municipal bond market significantly affect SUB. Changes in tax laws and credit ratings of municipal issuers also play a crucial role.
Growth Trajectory
The growth trajectory of SUB is linked to investor demand for tax-exempt income and short-term fixed income exposure. Shifts in interest rate expectations can also influence its asset growth as investors reallocate assets.
Moat and Competitive Advantages
Competitive Edge
SUB's competitive edge comes from BlackRock's scale and brand recognition, leading to high AUM and liquidity. It offers a low-cost way to access a diversified portfolio of short-term municipal bonds. Its large AUM allows for efficient trading and tighter spreads. SUB's focused strategy on short-term municipals and reputable management gives it an advantage against competitors.
Risk Analysis
Volatility
SUB's historical volatility is generally low due to the short-term nature and investment-grade quality of its holdings.
Market Risk
The primary market risks associated with SUB include interest rate risk (although mitigated by the short maturities) and credit risk from municipal issuers, although the ETF invests in investment-grade bonds.
Investor Profile
Ideal Investor Profile
The ideal investor for SUB is a risk-averse individual seeking tax-exempt income and capital preservation. Retirees, conservative investors, and those in high tax brackets may find it appealing.
Market Risk
SUB is best suited for long-term investors looking for a stable, tax-advantaged fixed income component in their portfolio.
Summary
The iShares Short-Term National Muni Bond ETF (SUB) offers a low-cost and liquid way to access the short-term municipal bond market. Benefiting from BlackRocku2019s scale and brand recognition, SUB provides a tax-efficient option for risk-averse investors looking for stable income. However, its returns are tied to the performance of short-term municipal bonds and it's subject to interest rate and credit risk. Investors should carefully consider its suitability in relation to their investment objectives and risk tolerance.
Similar ETFs
Sources and Disclaimers
Data Sources:
- iShares website
- Bloomberg
- Morningstar
Disclaimers:
The information provided is for informational purposes only and should not be considered investment advice. Past performance is not indicative of future results. Consult with a qualified financial advisor before making any investment decisions.
 AI Summarization is directionally correct and might not be accurate.
 AI Summarization is directionally correct and might not be accurate. 
 Summarized information shown could be a few years old and not current.
 Summarized information shown could be a few years old and not current. 
 Fundamental Rating based on AI could be based on old data.
 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.
 AI-generated summaries may have inaccuracies (hallucinations). Please verify the information before taking action. 
About iShares Short-Term National Muni Bond ETF
|  Exchange  NYSE ARCA  |  Headquaters  -  | ||
|  IPO Launch date  -  |  CEO  -  | ||
|  Sector  -  |  Industry  -  |  Full time employees  -  |  Website  | 
|  Full time employees  -  |  Website  | ||
The fund will invest at least 80% of its assets in the component securities of the underlying index, and the fund will invest at least 90% of its assets in fixed income securities of the types included in the underlying index that the advisor believes will help the fund track the underlying index. The underlying index includes municipal bonds, the interest of which is exempt from Federal income taxes and not subject to alternative minimum tax.

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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