What Is BND? Vanguard Total Bond Market Index Fund

BND is Vanguard Total Bond Market Index Fund, an ETF that tracks Bloomberg US Aggregate Float Adjusted Index at a 0.03% expense ratio. Holds thousands of US investment-grade bonds (Treasuries, agency, and corporate) across maturities, making it a one-fund core bond allocation. It adds ballast and income to an equity portfolio at a 0.03% fee, with price sensitivity to interest rates.

BND is issued by Vanguard and tracks Bloomberg US Aggregate Float Adjusted Index, so a single ticker gives you the whole portfolio of underlying holdings weighted by the index's methodology rather than by any active stock-picking.

BND does not hold a basket of individual stocks. It gets its exposure synthetically, through derivatives such as swaps and futures rather than by owning the underlying shares, so there is no conventional top-10 equity holdings list. See the description above for what BND actually tracks and how that exposure is built.

There are three common ways to get BND exposure. Buy shares (or fractional shares) of BND directly at any major broker that lists it. Hold it as a core position and layer more concentrated ideas on top. Or build it into a thematic portfolio in Walnut, so BND sits alongside other holdings that express the same thesis, with target weights you can rebalance toward. BND trades like a stock during market hours, so you buy it the same way you would any listed share.

New to buying funds? See how to buy an ETF, step by step.

Whether BND is a good buy depends less on any single call and more on your time horizon and what you already hold: it tracks Bloomberg US Aggregate Float Adjusted Index, so the real question is whether you want that exposure in your mix and at what weight. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is BND a buy?

BND gives you Bloomberg US Aggregate Float Adjusted Index exposure in one ticker at a 0.03% expense ratio. Most investors use it as a core holding and layer more concentrated thematic portfolios on top.

Whether BND is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is BND a buy?

BND yields ~3.94% as of mid-2026, paid by passing through the dividends of its underlying holdings. For the payout schedule, history, and how the distributions are taxed, see BND dividend: yield and schedule.

AGG and BND both track the total US investment-grade bond market with very similar holdings and the same 0.03% fee, so their returns track closely. The choice is really iShares (BlackRock) versus Vanguard; either works as a one-fund core bond allocation. Read the full side-by-side in AGG vs BND.

TLT holds only long-dated (20+ year) Treasuries, so it is far more sensitive to interest rates than BND, which spreads across the whole investment-grade market at shorter average maturity. TLT is a concentrated rate and recession bet; BND is a diversified, steadier core bond holding. Read the full side-by-side in TLT vs BND.

New to funds like BND? Start with what an ETF is, then how to buy an ETF, or browse the full guide to ETF investing.