Data Reference · Updated 2026-07-11
BND vs AGG: Vanguard vs iShares total bond market ETFs
Vanguard Total Bond Market ETF (BND) vs iShares Core U.S. Aggregate Bond ETF (AGG) — both track the broad US bond market at a 0.03% fee; the real difference is holdings count and index methodology, compared from SEC filings.
Key takeaway
BND and AGG charge effectively the same fee (0.03% vs 0.03%), and BND is the larger fund ($386.76B net assets). And their disclosed top-10 holdings share 6 names — overlapping at the top, but not interchangeable.
Not investment advice. Figures are sourced from SEC filings and are current as of the dates cited below, not real-time.
BND
- Price
- $72.77
- Net Assets
- $386.76B
- Expense Ratio
- 0.03%
- Beta
- 0.98
- Holdings
- 17368
AGG
- Price
- $98.08
- Net Assets
- $141.22B
- Expense Ratio
- 0.03%
- Beta
- 0.99
- Holdings
- 13186
What the filings show
- BND and AGG charge nearly identical expense ratios (0.03% vs 0.03%).
- BND runs a larger asset base ($386.76B vs $141.22B), which tends to mean tighter bid-ask spreads.
- AGG concentrates its portfolio in fewer names (13186 holdings vs BND's 17368).
- 6 names (United States Treasury, United States Treasury, United States Treasury, United States Treasury, United States Treasury, United States Treasury) appear in both funds' top 10 holdings.
Top 10 holdings, both funds
Holding | Fund | % of Net Assets |
|---|---|---|
| Vanguard Cmt Funds-Vanguard Market Liquidity Fund | BND | 1.07% |
| United States Treasury Note/Bond | BND | 0.48% |
| United States Treasury Note/Bond | BND | 0.42% |
| United States Treasury Note/Bond | BND | 0.42% |
| United States Treasury Note/Bond | BND | 0.42% |
| United States Treasury Note/Bond | BND | 0.41% |
| United States Treasury Note/Bond | BND | 0.41% |
| United States Treasury Note/Bond | BND | 0.40% |
| United States Treasury Note/Bond | BND | 0.39% |
| United States Treasury Note/Bond | BND | 0.39% |
| BLACKROCK CASH FUNDS | AGG | 3.19% |
| BlackRock Funds III | AGG | 0.52% |
| United States Treasury | AGG | 0.46% |
| United States Treasury | AGG | 0.43% |
| United States Treasury | AGG | 0.42% |
| United States Treasury | AGG | 0.42% |
| United States Treasury | AGG | 0.42% |
| United States Treasury | AGG | 0.41% |
| United States Treasury | AGG | 0.41% |
| United States Treasury | AGG | 0.41% |
Sort by:
HoldingVanguard Cmt Funds-Vanguard Market Liquidity Fund
FundBND
% of Net Assets1.07%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.48%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.42%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.42%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.42%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.41%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.41%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.40%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.39%
HoldingUnited States Treasury Note/Bond
FundBND
% of Net Assets0.39%
HoldingBLACKROCK CASH FUNDS
FundAGG
% of Net Assets3.19%
HoldingBlackRock Funds III
FundAGG
% of Net Assets0.52%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.46%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.43%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.42%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.42%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.42%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.41%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.41%
HoldingUnited States Treasury
FundAGG
% of Net Assets0.41%
From the research desk
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Background reading
Sector context and analytical frameworks that inform how we evaluate individual names.
Sources
- BND expense ratio (0.03%, as of 2026-04-28): SEC 497K Summary Prospectus (ETF Shares)
- AGG expense ratio (0.03%, as of 2026-06-29): SEC 497K Summary Prospectus
- BND holdings (2026-03-31): SEC Form N-PORT-P
- AGG holdings (2026-02-28): SEC Form N-PORT-P
- Price/beta: BND on FMP, AGG on FMP
- Net assets are as filed for the fund series — for multi-class funds (e.g. Vanguard) that is all share classes combined, not the ETF class alone.