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iShares Short-Term National Muni Bond ETF (SUB)

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Upturn Advisory Summary
01/09/2026: SUB (1-star) has a low Upturn Star Rating. Not recommended to BUY.
Analysis of Past Performance
Type ETF | Historic Profit 3.44% | Avg. Invested days 41 | Today’s Advisory Consider higher Upturn Star rating |
Upturn Star Rating ![]() | Upturn Advisory Performance | ETF Returns Performance |
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
iShares Short-Term National Muni Bond ETF
ETF Overview
Overview
The iShares Short-Term National Muni Bond ETF (SUB) seeks to track the performance of a broad index composed of investment-grade, tax-exempt bonds with remaining maturities between one and five years. Its primary focus is on providing investors with income that is exempt from federal income tax, investing in municipal bonds issued by U.S. states and territories, as well as their political subdivisions and agencies. The strategy involves holding a diversified portfolio of these short-to-intermediate-term municipal bonds.
Reputation and Reliability
iShares, a division of BlackRock, is one of the world's largest and most reputable ETF providers, known for its extensive range of low-cost, diversified investment products and a strong track record in asset management.
Management Expertise
BlackRock's extensive experience in fixed-income management and ETF creation provides a high level of expertise in managing the iShares Short-Term National Muni Bond ETF.
Investment Objective
Goal
To provide investors with current income that is exempt from federal income tax while maintaining a relatively low level of interest rate sensitivity.
Investment Approach and Strategy
Strategy: The ETF aims to track the performance of the S&P National AMT-Free Municipal Bond Index, an index designed to represent the broad U.S. municipal bond market with a focus on short-to-intermediate maturities.
Composition The ETF primarily holds investment-grade municipal bonds issued by U.S. states and local governments, including general obligation bonds, revenue bonds, and lease obligations. The average maturity of the bonds in the portfolio is kept within a short-to-intermediate range (typically 1-5 years remaining maturity).
Market Position
Market Share: Information on specific market share for individual municipal bond ETFs is highly fragmented and dynamic. However, iShares holds a significant presence in the broader fixed-income ETF market.
Total Net Assets (AUM): 3400000000
Competitors
Key Competitors
- Vanguard Short-Term Tax-Exempt Bond ETF (VTES)
- SPDR Nuveen Blunt Select Tax-Free Fund (NUV)
- iShares National Muni Bond ETF (MNA)
Competitive Landscape
The municipal bond ETF market is competitive, with several large asset managers offering similar products. iShares benefits from brand recognition and scale. Competitors may differentiate on expense ratios, specific index methodologies, or the inclusion of different types of municipal bonds. iShares' advantage lies in its broad market access and low fees, while potential disadvantages could arise from less specialized holdings compared to niche competitors.
Financial Performance
Historical Performance: The ETF's historical performance will vary based on market conditions. Over periods like 1-year, 3-year, and 5-year, it aims to provide stable income with limited capital appreciation due to its short duration.
Benchmark Comparison: The ETF generally tracks its benchmark index, the S&P National AMT-Free Municipal Bond Index, closely. Deviations may occur due to tracking error, expenses, and portfolio rebalancing.
Expense Ratio: 0.19
Liquidity
Average Trading Volume
The ETF exhibits strong average trading volume, indicating good liquidity for investors looking to buy or sell shares throughout the trading day.
Bid-Ask Spread
The bid-ask spread for this ETF is typically narrow, reflecting its high trading volume and the liquidity of its underlying municipal bonds.
Market Dynamics
Market Environment Factors
Key factors influencing this ETF include prevailing interest rates, inflation expectations, credit quality of municipal issuers, and changes in tax laws. A rising interest rate environment can negatively impact bond prices, while economic growth and stable fiscal conditions for municipalities are generally positive.
Growth Trajectory
The ETF's growth trajectory is tied to the demand for tax-exempt income and the overall performance of the municipal bond market. As interest in tax-efficient income grows, so does the potential for AUM growth. Strategy typically remains consistent, focusing on short-to-intermediate term investment-grade municipal bonds.
Moat and Competitive Advantages
Competitive Edge
The iShares Short-Term National Muni Bond ETF's competitive edge lies in its accessibility to a diversified portfolio of investment-grade, tax-exempt municipal bonds with short maturities. This offers tax efficiency and reduced interest rate risk. Its affiliation with BlackRock provides scale, a strong reputation, and operational efficiency, contributing to a competitive expense ratio. The ETF caters to investors seeking a reliable source of tax-free income without significant exposure to long-term interest rate fluctuations.
Risk Analysis
Volatility
Due to its short duration, the ETF generally exhibits lower volatility compared to longer-term bond funds, making it relatively stable. However, it is still subject to market fluctuations and credit risk.
Market Risk
The primary market risks include interest rate risk (rising rates can decrease bond values), credit risk (the possibility of a municipal issuer defaulting on its obligations), and liquidity risk (difficulty in selling bonds at a fair price in stressed markets).
Investor Profile
Ideal Investor Profile
This ETF is ideal for U.S. investors in higher tax brackets who are seeking to supplement their income with tax-exempt earnings. It is suitable for those who prioritize capital preservation and a stable income stream over aggressive growth.
Market Risk
This ETF is best suited for long-term investors and those seeking a passive income strategy to diversify their portfolios and reduce their tax liability.
Summary
The iShares Short-Term National Muni Bond ETF (SUB) offers U.S. investors a tax-efficient way to access income from a diversified portfolio of short-to-intermediate term municipal bonds. Its strategy focuses on capital preservation and stable, tax-exempt income, making it appealing to those in higher tax brackets. With a low expense ratio and strong liquidity, it provides a cost-effective solution for tax-conscious investors seeking to minimize interest rate sensitivity. The ETF is managed by BlackRock, a reputable issuer with extensive expertise in fixed-income ETFs.
Similar ETFs
Sources and Disclaimers
Data Sources:
- iShares Official Website
- Financial Data Providers (e.g., Morningstar, Bloomberg)
- Industry Analysis Reports
Disclaimers:
This information is for educational purposes only and should not be considered investment advice. Past performance is not indicative of future results. Investors should consult with a qualified financial advisor before making any investment decisions. Data is subject to change and may not be fully up-to-date.
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 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.

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