Skip to main content
VTBNX logo

Vanguard Total Bond Market II Idx I (VTBNX) Fund Overview

Educational signal · not a buy or sell recommendation · How to read this

$9.08 -$0.02 (-0.22%)
Data from FMP · Methodology

For informational purposes only. Not financial advice. Machine-generated analysis by Stock Expert AI — model gemini-2.0-flash, generated Mar 17, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief. Data sources: Financial Modeling Prep, Yahoo Finance, SEC EDGAR

Quick Answer

Vanguard Total Bond Market II Idx I (VTBNX) trades at $9.08. Vanguard Total Bond Market II Index Fund Investor Shares (VTBNX) seeks to track the investment results of the Bloomberg U.S. Aggregate Float Adjusted Index. Sector: Financials.

Price as of · Last analyzed: Mar 17, 2026
Vanguard Total Bond Market II Index Fund Investor Shares (VTBNX) seeks to track the investment results of the Bloomberg U.S. Aggregate Float Adjusted Index. The fund invests at least 80% of its assets in bonds held in the index, utilizing a sampling approach to mirror the index's key characteristics.

Analyst Coverage for VTBNX: VTBNX does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage.

▶ Watch the VTBNX film Every key number, told as a short cinematic story — just press play. ~2 min

Vanguard Total Bond Market II Idx I (VTBNX) Financial Services Profile

HeadquartersValley Forge, US
IPO Year2011

Vanguard Total Bond Market II Index Fund Investor Shares (VTBNX) offers investors broad exposure to the U.S. investment-grade bond market by mirroring the Bloomberg U.S. Aggregate Float Adjusted Index. It provides diversification and aims to replicate the index's performance through a sampling investment strategy.

Data Provenance | Financial Data Quantitative Analysis Analysis: Mar 17, 2026

What Is the Investment Thesis for VTBNX?

AI-written as of Mar 17, 2026 — figures and tone reflect the data available then, not today's score.

With a substantial market cap of $377.09 billion, the fund provides significant diversification across various bond sectors, including government, corporate, and mortgage-backed securities. The indexing approach ensures a close correlation with the Bloomberg U.S. Aggregate Float Adjusted Index, offering a transparent and cost-effective way to track the overall bond market performance. Ongoing low interest rate environment may present challenges, but the fund's diversified holdings mitigate some risk. The fund's value is primarily driven by the performance of the underlying bonds within the index and the overall interest rate environment.

Based on FMP financials and quantitative analysis

VTBNX Key Highlights

AI-written as of Mar 17, 2026 — figures and tone reflect the data available then, not today's score.

Market Cap of $377.09B indicates substantial size and liquidity.

  • Tracks the Bloomberg U.S. Aggregate Float Adjusted Index, providing broad exposure to the U.S. investment-grade bond market.
  • Employs a sampling strategy to replicate index performance efficiently.
  • Invests at least 80% of assets in bonds held in the index, ensuring close alignment with the investment objective.
  • Managed by Vanguard, a reputable firm known for low-cost investment options.

Who Are VTBNX's Competitors?

VTBNX is benchmarked below against 4 industry peers on price, market cap, and our AI MoonshotScore.

Company Price Change Market Cap MoonshotScore
BND Vanguard Total Bond Market ETF $69.94 -0.21% $385B —
VBMFX Vanguard Total Bond Market Index Fund Investor Shares $9.22 -0.22% $387B —
VBMPX Vanguard Total Bond Market Index Fund Institutional Plus Shares $9.22 -0.22% $387B —
VBTLX Vanguard Total Bond Market Index Fund Admiral Shares $9.22 -0.22% $386B —

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are VTBNX's Key Strengths?

Low expense ratio

  • Broad diversification across the U.S. investment-grade bond market
  • Strong brand reputation of Vanguard
  • High liquidity due to large asset base

What Are VTBNX's Weaknesses?

Limited upside potential compared to equity investments

  • Vulnerable to interest rate risk
  • Performance closely tied to the underlying index, limiting potential for outperformance
  • No active management to adapt to changing market conditions

What Are the Key Risks for VTBNX?

Interest rate risk: Rising interest rates could decrease the value of bond holdings.

  • Credit risk: Downgrades or defaults of bond issuers could negatively impact performance.
  • Inflation risk: Unexpectedly high inflation could erode the real return of bond investments.
  • Liquidity risk: Difficulty in selling certain bond holdings during periods of market stress.

What Threats Does VTBNX Face?

  • Rising interest rates could negatively impact bond prices
  • Increased competition from other low-cost bond funds
  • Changes in the composition or methodology of the underlying index
  • Economic downturn could lead to credit downgrades and defaults

What Are VTBNX's Competitive Advantages?

  • Low cost structure: Vanguard is known for its low expense ratios, making VTBNX a noteworthy option for cost-conscious investors.
  • Brand reputation: Vanguard has a strong reputation for integrity and investor-focused principles.
  • Scale: VTBNX's large asset base provides economies of scale and liquidity.

What Does VTBNX Do?

Vanguard Total Bond Market II Index Fund Investor Shares (VTBNX) is designed to provide investors with broad exposure to the U.S. investment-grade bond market. The fund employs an indexing investment approach, seeking to track the performance of the Bloomberg U.S. Aggregate Float Adjusted Index. This index includes a wide spectrum of public, investment-grade, taxable, fixed income securities in the United States – including U.S. Treasuries, government-related and corporate securities, mortgage pass-through securities, commercial mortgage-backed securities (CMBS), and asset-backed securities (ABS) that are publicly offered for sale in the United States. VTBNX utilizes a sampling strategy, meaning it invests in a representative selection of securities that collectively mirror the key risk factors and characteristics of the full index. This approach allows the fund to closely replicate the index's performance without needing to hold every single security within it. The fund maintains a high degree of investment in bonds, with at least 80% of its assets allocated to securities included in the Bloomberg U.S. Aggregate Float Adjusted Index. This focus ensures that the fund remains closely aligned with its stated investment objective of tracking the overall performance of the U.S. bond market. The fund is managed by Vanguard, a well-established investment management firm known for its low-cost investment options and commitment to investor-focused principles.

What Products and Services Does VTBNX Offer?

  • Tracks the performance of the Bloomberg U.S. Aggregate Float Adjusted Index.
  • Provides broad exposure to the U.S. investment-grade bond market.
  • Invests primarily in U.S. government, corporate, and mortgage-backed securities.
  • Employs a sampling strategy to replicate the index's key characteristics.
  • Offers a low-cost and diversified investment option for bond investors.
  • Reinvests income, increasing the fund's net asset value.

How Does VTBNX Make Money?

  • Generates revenue through management fees charged as a percentage of assets under management (AUM).
  • Aims to replicate the performance of the Bloomberg U.S. Aggregate Float Adjusted Index.
  • Offers a passively managed investment strategy, minimizing active trading and research costs.

What Industry Does VTBNX Operate In?

The asset management industry, particularly in the bond sector, is characterized by intense competition and sensitivity to macroeconomic factors, especially interest rate movements. Funds like VTBNX operate within a landscape where investors seek diversification, yield, and capital preservation. The Bloomberg U.S. Aggregate Float Adjusted Index, which VTBNX tracks, is a widely recognized benchmark for the U.S. investment-grade bond market. The industry is experiencing a shift towards passive investment strategies, with index funds like VTBNX gaining popularity due to their low cost and transparent investment approach.

Who Are VTBNX's Key Customers?

  • Individual investors seeking diversified bond exposure.
  • Institutional investors looking for a low-cost way to track the U.S. bond market.
  • Retirement savers seeking stable income and capital preservation.
Model self-rating on this text: 83% (not a measure of the evidence) Updated: Mar 17, 2026

Research confidence

Low

Thin evidence — scoring coverage unknown. Treat this as a starting point, not a conclusion.

  • ● Scoring coverage unknown
  • ● Price is current
  • ● No filing on record
  • ● No analyst coverage
  • ● This is a fund, not an operating company

VTBNX Financials

Bull Case vs Bear Case

Bull Case

  • Low expense ratio
  • Broad diversification across the U.S. investment-grade bond market
  • Strong brand reputation of Vanguard
  • High liquidity due to large asset base

Bear Case

  • Limited upside potential compared to equity investments
  • Vulnerable to interest rate risk
  • Performance closely tied to the underlying index, limiting potential for outperformance
  • No active management to adapt to changing market conditions

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · March 2026

VTBNX Latest News

No recent news available for VTBNX.

VTBNX Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations collected by Financial Modeling Prep for VTBNX.

Price Targets

Wall Street price target analysis for VTBNX.

VTBNX MoonshotScore

MoonshotScore is Stock Expert AI's proprietary 0-100 research rating, not a buy or sell recommendation. No MoonshotScore is published for VTBNX; grades run from A+ (80-100) to F (below 30).

VTBNX Financials Stock FAQ

What does Vanguard Total Bond Market II Idx I do?

Vanguard Total Bond Market II Index Fund Investor Shares (VTBNX) is designed to track the performance of the Bloomberg U.S. Aggregate Float Adjusted Index, offering investors broad exposure to the U.S. investment-grade bond market.

What are the main risks for VTBNX?

The main risks for VTBNX include interest rate risk, credit risk, and inflation risk. Rising interest rates could decrease the value of the fund's bond holdings, while downgrades or defaults of bond issuers could negatively impact performance. Unexpectedly high inflation could erode the real return of bond investments.

How sensitive is VTBNX to interest rate changes?

VTBNX is highly sensitive to interest rate changes. As interest rates rise, the value of the bonds held by the fund tends to decrease, which can lead to a decline in the fund's net asset value (NAV).

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

Price as of Analysis updated

MoonshotScore is not published for this security.

Data Sources & Methodology
Figures come from Financial Modeling Prep (FMP). If FMP has no figure for a ticker, a price or fundamental may come from a Yahoo Finance fallback, or a price from an Alpaca fallback. SEC EDGAR is used only for filing links and company identity details (legal name, address), never for figures. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • This analysis is based on publicly available information and should not be considered investment advice.
Data Sources
Financial Modeling Prep (FMP)Stock Expert AI proprietary analysis