Vanguard Total Bond Market Index Fund Institutional Shares
VBTIX
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USD
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in mil. unless spec.- Sector
- Financial Services
- Industry
- Asset Management - Bonds
- Address
- 100 Vanguard Boulevard Malvern PA United States of America 19355
- IPO Date
- Sep 18, 1995
- CIK
- 0000794105
- Website
- investor.vanguard.com
- Similar Companies
- Business
- Vanguard Total Bond Market Index Fund (VBTIX) is an institutional share class mutual fund that employs an indexing investment approach designed to track the performance of the Bloomberg U.S. Aggregate Float Adjusted Bond Index. The fund invests by sampling the index, holding a representative range of securities that approximate the full index across key risk factors and characteristics; at least 80% of assets are invested in index-held bonds, including government, corporate, and international dollar-denominated bonds, as well as mortgage-backed securities and asset-backed securities, all with maturities greater than one year and a dollar-weighted average maturity of 5 to 10 years. Key holdings emphasize U.S. Treasuries and agency securities (approximately 48.7% Treasury/Agency and 19.6% Government Mortgage-Backed as of June 30, 2025), alongside industrial (14.4%), finance (8.6%), foreign (3.4%), utilities (2.5%), commercial mortgage-backed (1.7%), and asset-backed (0.5%) bonds, with over 70% rated AAA or AA for high credit quality. Launched on September 18, 1995, the fund is managed by The Vanguard Group, Inc., headquartered in Malvern, Pennsylvania, and operates within the intermediate core bond category, targeting institutional investors seeking broad, low-cost exposure to the U.S. investment-grade taxable bond market. It maintains a low expense ratio of 0.035% (as of May 2025), high credit quality/moderate interest rate sensitivity, and an effective duration of 5.81 years, with total net assets exceeding $383 billion. Geographic focus remains on U.S. dollar-denominated securities, excluding riskier types such as eurodollar bonds, non-ERISA-eligible CMBS, and bonds with equity features. In early 2025, Vanguard implemented its largest round of fee cuts across funds, estimated at USD 350 million, enhancing cost efficiency for investors including those in VBTIX. The firm also established a dedicated division for advice and wealth management services, signaling strategic expansion into competitive advisory lines while sustaining robust asset inflows rivaling BlackRock. Vanguard expanded its quantitative capabilities with an optimization tool incorporating trader insights and liquidity data to refine tracking precision and minimize trading costs, alongside specialization in ETF basket management, index changes, and international portfolios. These enhancements support the fund's conservative credit profile and market-value weighting, which has increased Treasury allocation to around 50% amid heightened issuance.