About VTBSX
Vanguard Total Bond Market Index Fund Institutional Select Shares is an institutional share class mutual fund designed to provide broad exposure to the U.S. investment-grade bond market. Its primary objective is to replicate the performance of a comprehensive, market-weighted bond index, specifically the Bloomberg US Aggregate Float Adjusted Index, which includes U.S. Treasury, government agency, corporate, mortgage-backed, and asset-backed securities across short, intermediate, and long maturities. The portfolio is expansive, with over 18,000 holdings and significant allocation to high-credit-quality instruments such as U.S. Treasuries, resulting in a conservative risk profile and substantial liquidity. The fund stands out for its exceptionally low expense ratio, making it cost-effective for large institutions. By weighting holdings by market value and adjusting for Federal Reserve holdings, the fund ensures investability and broad market representation. Vanguard Total Bond Market Index Fund Institutional Select Shares serves as a core fixed income holding, offering diversification, income potential, and a representative snapshot of the overall U.S. taxable bond market.
Fund Family Vanguard
Category Intermediate Core Bond
Performance Rating Average
Risk Rating Average
Stock Exchange NASDAQ
Ticker Symbol VTBSX
Share Class Institutional Select Shares
Index Bloomberg US Agg Float Adjusted TR
VTBSX had a total return of -0.87% in the past year, including dividends. Since the fund's
inception, the average annual return has been 1.56%.
