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Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX)

For informational purposes only. Not financial advice. Analysis by Sedat Aydin, Founder & Editor-in-Chief | AI-powered analysis. Data sourced from SEC filings and institutional-grade financial providers. Editorially reviewed. Not financial advice.

Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) with AI Score 46/100 (Weak). Vanguard Short-Term Bond Index Fund (VBIRX) seeks to track the investment results of the Bloomberg U. S. 1-5 Year Government/Credit Float Adjusted Index. Market cap: 0, Sector: Financial services.

Last analyzed: Mar 15, 2026
Vanguard Short-Term Bond Index Fund (VBIRX) seeks to track the investment results of the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index. The fund invests primarily in U.S. government, investment-grade corporate, and investment-grade international dollar-denominated bonds with maturities between 1 and 5 years.
46/100 AI Score

Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) Financial Services Profile

Vanguard Short-Term Bond Index Fund (VBIRX) offers investors exposure to a diversified portfolio of short-term U.S. government, corporate, and international dollar-denominated investment-grade bonds. With a focus on maturities between 1 and 5 years, VBIRX aims to replicate the performance of the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index.

Data Provenance | Financial Data Quantitative Analysis NASDAQ Analysis: Mar 15, 2026

Investment Thesis

VBIRX offers a straightforward investment thesis centered on providing stable returns through exposure to short-term investment-grade bonds. The fund's primary value driver is its ability to closely track the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index, offering investors a reliable benchmark for short-term bond performance. A key growth catalyst is the continued demand for low-risk investment options, particularly during periods of economic uncertainty. With a beta of 1.00, VBIRX's performance is expected to closely mirror the broader bond market. However, investors should be aware that VBIRX offers no dividend yield, potentially limiting its appeal to income-focused investors. The fund's success hinges on maintaining its low expense ratio and accurately replicating the target index.

Based on FMP financials and quantitative analysis

Key Highlights

  • VBIRX tracks the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index, providing exposure to a diversified portfolio of short-term bonds.
  • The fund invests at least 80% of its assets in bonds held in the index, ensuring a high degree of correlation with the index's performance.
  • VBIRX focuses on investment-grade bonds, mitigating credit risk compared to high-yield bond funds.
  • The fund's short-term maturity focus (1-5 years) reduces its sensitivity to interest rate changes compared to longer-term bond funds.
  • With a beta of 1.00, VBIRX's performance is expected to closely mirror the broader bond market.

Competitors & Peers

Strengths

  • Low expense ratio
  • Accurate index tracking
  • Diversified portfolio of short-term bonds
  • Investment-grade credit quality

Weaknesses

  • Limited upside potential compared to equity investments
  • Sensitivity to interest rate changes (though less than longer-term bonds)
  • No dividend yield
  • Potential for tracking error

Catalysts

  • Upcoming: Federal Reserve interest rate decisions may influence short-term bond yields.
  • Ongoing: Economic growth or contraction can impact corporate bond spreads.
  • Ongoing: Inflation data releases can affect investor expectations for interest rates.

Risks

  • Potential: Rising interest rates could lead to a decline in bond prices.
  • Potential: Credit downgrades of underlying bond holdings could negatively impact performance.
  • Potential: Economic recession could lead to increased credit risk and decreased corporate bond values.
  • Ongoing: Tracking error could cause the fund to deviate from the performance of its target index.

Growth Opportunities

  • Increased Demand for Low-Risk Investments: Ongoing: Economic uncertainty and market volatility may drive increased demand for low-risk investment options like short-term bond funds. VBIRX can capitalize on this trend by offering a stable and diversified portfolio of investment-grade bonds. The market size for low-risk investments is substantial, with trillions of dollars allocated to fixed income assets globally. As investors seek to preserve capital, VBIRX could see increased inflows.
  • Rising Interest Rate Environment: Potential: While rising interest rates can negatively impact bond prices, short-term bond funds are less sensitive to interest rate changes compared to longer-term bond funds. VBIRX can position itself as a relatively safe haven during periods of rising rates, attracting investors seeking to mitigate interest rate risk. The timeline for this opportunity depends on the Federal Reserve's monetary policy decisions.
  • Expansion of Investment-Grade Bond Market: Ongoing: The investment-grade bond market continues to grow, providing VBIRX with a larger pool of eligible securities to invest in. This expansion allows the fund to maintain its diversification and track its target index effectively. The growth of the investment-grade bond market is driven by corporate debt issuance and government borrowing.
  • Increased Adoption of Index Investing: Ongoing: The trend towards passive investing and the adoption of index funds continues to gain momentum. VBIRX can benefit from this trend as investors seek low-cost, diversified investment options. The market share of index funds has been steadily increasing over the past decade, and this trend is expected to continue.
  • Growing Demand for ESG-Focused Investments: Ongoing: While not explicitly an ESG fund, VBIRX's focus on investment-grade bonds indirectly promotes responsible corporate behavior. As demand for ESG-focused investments grows, VBIRX can highlight its alignment with responsible investing principles. The market for ESG investments is rapidly expanding, with trillions of dollars allocated to sustainable and responsible investment strategies.

Opportunities

  • Increased demand for low-risk investments
  • Rising interest rate environment (relatively less sensitive)
  • Expansion of investment-grade bond market
  • Growing demand for ESG-focused investments

Threats

  • Unexpected interest rate hikes
  • Credit downgrades of underlying bond holdings
  • Increased competition from other short-term bond funds
  • Economic recession leading to decreased corporate bond values

Competitive Advantages

  • Low Expense Ratio: VBIRX's low expense ratio provides a cost advantage over actively managed bond funds.
  • Index Tracking: The fund's ability to accurately track its target index provides a reliable benchmark for performance.
  • Vanguard's Reputation: Vanguard's reputation for low-cost index investing enhances investor confidence.

About VBIRX

The Vanguard Short-Term Bond Index Fund (VBIRX) is designed to provide investors with broad exposure to the short-term U.S. investment-grade bond market. The fund operates by tracking the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index, which includes U.S. government, investment-grade corporate, and investment-grade international dollar-denominated bonds with maturities between 1 and 5 years. VBIRX utilizes a sampling strategy, meaning it invests in a representative selection of bonds within the index rather than holding every single bond. At least 80% of the fund's assets are invested in bonds held in the index, ensuring a high degree of correlation with the index's performance. The fund's objective is to provide a return that closely mirrors the index, offering investors a cost-effective way to access the short-term bond market. VBIRX is managed by Vanguard, a leading investment management company known for its low-cost index funds and ETFs. The fund is available to investors seeking a conservative investment option with relatively low interest rate risk due to the short-term nature of its holdings.

What They Do

  • Tracks the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index.
  • Invests primarily in U.S. government, investment-grade corporate, and investment-grade international dollar-denominated bonds.
  • Focuses on bonds with maturities between 1 and 5 years.
  • Utilizes a sampling strategy to select investments.
  • Maintains at least 80% of its assets in bonds held in the index.
  • Provides investors with exposure to the short-term U.S. investment-grade bond market.

Business Model

  • Tracks a specific bond index (Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index).
  • Generates returns by replicating the performance of the index.
  • Charges a low expense ratio to cover operating costs.

Industry Context

VBIRX operates within the fixed income market, specifically targeting the short-term bond segment. The fixed income market is influenced by macroeconomic factors such as interest rates, inflation, and economic growth. Short-term bond funds like VBIRX are generally considered less sensitive to interest rate changes compared to longer-term bond funds. The competitive landscape includes other short-term bond index funds and actively managed short-term bond funds. VBIRX's competitive advantage lies in its low expense ratio and its ability to accurately track its target index, the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index.

Key Customers

  • Individual investors seeking low-risk investment options.
  • Institutional investors looking for short-term bond exposure.
  • Financial advisors building diversified portfolios for their clients.
AI Confidence: 73% Updated: Mar 15, 2026

Financials

Chart & Info

Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) stock price: Price data unavailable

Latest News

No recent news available for VBIRX.

Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for VBIRX.

Price Targets

Wall Street price target analysis for VBIRX.

MoonshotScore

46/100

What does this score mean?

The MoonshotScore rates VBIRX's growth potential on a scale of 0-100 across multiple factors including innovation, market disruption, financial health, and momentum.

What Investors Ask About Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX)

What does Vanguard Short-Term Bond Index Fund do?

Vanguard Short-Term Bond Index Fund (VBIRX) is a passively managed fund designed to track the performance of the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index. It invests primarily in a diversified portfolio of U.S. government, investment-grade corporate, and investment-grade international dollar-denominated bonds with maturities between one and five years. The fund aims to provide investors with a low-cost and efficient way to gain exposure to the short-term investment-grade bond market, offering a relatively stable investment option compared to equities or longer-term bonds.

What do analysts say about VBIRX stock?

As a passively managed index fund, VBIRX is primarily evaluated on its ability to accurately track its benchmark index, the Bloomberg U.S. 1-5 Year Government/Credit Float Adjusted Index. Key metrics include tracking error, expense ratio, and credit quality of the underlying bond holdings. Analysts generally view VBIRX as a low-cost and efficient way to gain exposure to the short-term investment-grade bond market. However, investors should be aware that VBIRX offers limited upside potential compared to equities and is subject to interest rate risk.

What are the main risks for VBIRX?

The primary risks for VBIRX include interest rate risk, credit risk, and tracking error. Rising interest rates could lead to a decline in bond prices, negatively impacting the fund's performance. Credit downgrades of underlying bond holdings could also negatively affect the fund's value. Tracking error, the deviation between the fund's performance and the performance of its target index, is another potential risk. Additionally, economic recession could lead to increased credit risk and decreased corporate bond values, impacting the fund's overall return.

What are the key factors to evaluate for VBIRX?

Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) currently holds an AI score of 46/100, indicating low score. Key strength: Low expense ratio. Primary risk to monitor: Potential: Rising interest rates could lead to a decline in bond prices.. This is not financial advice.

How frequently does VBIRX data refresh on this page?

VBIRX prices update in real time during U.S. market hours (9:30 AM-4:00 PM ET, weekdays). Fundamentals refresh after quarterly or annual filings. Analyst ratings and AI insights update daily. News is aggregated continuously from financial sources.

What has driven VBIRX's recent stock price performance?

Recent price movement in Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) can be influenced by earnings results, analyst revisions, sector rotation, and broader market sentiment. Notable catalyst: Low expense ratio. Check the News and Technical Analysis tabs for the latest drivers. Past performance does not predict future results.

Should investors consider VBIRX overvalued or undervalued right now?

Determining whether Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX) is overvalued or undervalued requires examining multiple metrics. Compare valuation ratios (P/E, P/S, EV/EBITDA) against sector peers for a comprehensive view.

What research should beginners do before buying VBIRX?

Before investing in Vanguard Short-Term Bond Index Fund Admiral Shares (VBIRX), research these four areas: (1) the company's revenue model and competitive position (see Company Overview), (2) financial health through revenue growth, margins, and cash flow (see MoonshotScore), (3) what Wall Street analysts recommend and their price targets (see Analyst tab), and (4) specific risk factors that could impact the stock (see Risk Factors section).

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Analysis updated AI Score refreshed daily
Data Sources & Methodology
Market data powered by Financial Modeling Prep & Yahoo Finance. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .

Data provided for informational purposes only.

Analysis Notes
  • The information provided is based on publicly available data and is for informational purposes only. It is not intended as investment advice.
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