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iShares Core 1-5 Year USD Bond (ISTB)

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Upturn Advisory Summary
01/09/2026: ISTB (1-star) has a low Upturn Star Rating. Not recommended to BUY.
Analysis of Past Performance
Type ETF | Historic Profit 11.75% | Avg. Invested days 89 | Today’s Advisory Consider higher Upturn Star rating |
Upturn Star Rating ![]() | Upturn Advisory Performance | ETF Returns Performance |
Key Highlights
Volume (30-day avg) - | Beta 0.44 | 52 Weeks Range 45.51 - 48.64 | Updated Date 06/29/2025 |
52 Weeks Range 45.51 - 48.64 | Updated Date 06/29/2025 |
Upturn AI SWOT
iShares Core 1-5 Year USD Bond
ETF Overview
Overview
The iShares Core 1-5 Year USD Bond ETF (IUSB) is designed to provide broad exposure to investment-grade U.S. dollar-denominated government and corporate bonds with remaining maturities between one and five years. Its primary focus is on offering investors a diversified portfolio of short-to-intermediate term fixed-income securities.
Reputation and Reliability
BlackRock, the issuer of iShares ETFs, is one of the world's largest asset managers with a long-standing reputation for reliability and expertise in the financial industry.
Management Expertise
iShares ETFs are managed by BlackRock's experienced investment teams, leveraging extensive research and sophisticated risk management processes.
Investment Objective
Goal
The primary investment goal of IUSB is to track the performance of the ICE U.S. Treasury 1-5 Year Bond Index, providing investors with a diversified portfolio of U.S. dollar-denominated investment-grade bonds with maturities between one and five years.
Investment Approach and Strategy
Strategy: IUSB aims to replicate the performance of a specific index, the ICE U.S. Treasury 1-5 Year Bond Index, through a representative sampling strategy.
Composition The ETF primarily holds U.S. government bonds, including Treasury bills, notes, and bonds, with maturities ranging from one to five years. It may also hold a small allocation to investment-grade corporate bonds that meet specific criteria.
Market Position
Market Share: As of a recent reporting period, iShares Core 1-5 Year USD Bond ETF holds a significant market share within the short-term U.S. bond ETF category, reflecting its popularity among investors seeking stable income and capital preservation.
Total Net Assets (AUM): 33500000000
Competitors
Key Competitors
- Vanguard Short-Term Bond ETF (BSV)
- iShares 1-3 Year Treasury Bond ETF (SHY)
- SPDR Portfolio Short Term Treasury ETF (SPTS)
Competitive Landscape
The short-term U.S. bond ETF market is highly competitive, dominated by large asset managers like iShares, Vanguard, and State Street. IUSB's advantages lie in its low expense ratio, broad diversification within its maturity band, and the backing of BlackRock's robust infrastructure. Its main disadvantage compared to some niche competitors might be a broader focus, potentially leading to slightly different performance characteristics.
Financial Performance
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Benchmark Comparison: IUSB generally tracks its benchmark index, the ICE U.S. Treasury 1-5 Year Bond Index, closely. Performance deviations are typically minimal and attributable to tracking error and expenses.
Expense Ratio: 0.07
Liquidity
Average Trading Volume
The ETF exhibits strong liquidity, with an average daily trading volume that facilitates easy entry and exit for investors.
Bid-Ask Spread
The bid-ask spread for IUSB is typically very tight, indicating low transaction costs for investors.
Market Dynamics
Market Environment Factors
IUSB is influenced by factors such as Federal Reserve interest rate policy, inflation expectations, and overall economic growth, which impact short-term bond yields. Current market conditions favor stable, shorter-duration assets in an environment of potential interest rate hikes.
Growth Trajectory
The ETF has experienced steady growth in assets under management, reflecting sustained investor demand for core fixed-income exposure. Its strategy remains focused on its defined maturity band, with minor adjustments to holdings to maintain index compliance.
Moat and Competitive Advantages
Competitive Edge
IUSB's primary competitive advantage stems from its status as a core holding within the iShares family of ETFs, benefiting from economies of scale and widespread distribution. Its low expense ratio and broad diversification across investment-grade bonds with a controlled maturity profile make it an attractive, low-cost option for investors seeking stability and income. The ETF's replication of a widely recognized index also provides transparency and predictability for its performance.
Risk Analysis
Volatility
IUSB exhibits low historical volatility, consistent with its objective of holding short-to-intermediate term investment-grade bonds.
Market Risk
The primary market risks for IUSB include interest rate risk (sensitivity to changes in interest rates, though mitigated by its short duration), inflation risk (erosion of purchasing power), and credit risk (although limited due to its focus on investment-grade debt).
Investor Profile
Ideal Investor Profile
The ideal investor for IUSB is one seeking capital preservation, regular income, and diversification from equity holdings. This includes conservative investors, those nearing retirement, or anyone looking to reduce overall portfolio volatility.
Market Risk
IUSB is best suited for long-term investors and passive index followers who prioritize stability and capital preservation over aggressive growth.
Summary
The iShares Core 1-5 Year USD Bond ETF (IUSB) offers a low-cost, diversified approach to short-to-intermediate term U.S. investment-grade bonds. It aims to track the ICE U.S. Treasury 1-5 Year Bond Index, providing investors with a stable income stream and capital preservation. With strong liquidity and a reputable issuer, IUSB is a compelling option for conservative investors seeking to reduce portfolio risk and enhance income. Its low volatility and minimal tracking error make it a reliable core holding for many portfolios.
Similar ETFs
Sources and Disclaimers
Data Sources:
- BlackRock (iShares) Official Website
- Financial Data Providers (e.g., Morningstar, Bloomberg - for anonymized data representation)
Disclaimers:
This information is for informational purposes only and does not constitute investment advice. Past performance is not indicative of future results. Investors should consult with a qualified financial advisor before making any investment decisions.
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 Core 1-5 Year USD Bond
Exchange NASDAQ | 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 index and TBA transactions that have economic characteristics that are substantially identical to the economic characteristics of the component securities of the index and it will invest at least 90% of its assets in fixed income securities of the types included in the index.

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