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ETF comparison

BND vs IUSB

Both US Aggregate Bond.

Vanguard Total Bond Market Index Fund ETF Shares · iShares Core Universal USD Bond ETF

Holdings overlap

Weighted by ISIN/CUSIP
57.4 %

9,105 positions appear in both funds. Buying equal dollars of BND and IUSB would leave roughly 57.4% of each dollar exposed to the same underlying securities.

BND unmatched 41.6% Shared 57.4% IUSB unmatched 40.8%

Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.

In BND only
8,291 positions
Shared
9,105 positions
In IUSB only
8,939 positions

Side by side

BND

Vanguard Total Bond Market Index Fund ETF Shares

Vanguard · US Aggregate Bond

89 composite / 100
Expense ratio
0.030%
Net assets
$389.05B
whole fund, 6 share classes
TTM yield
4.13%
Top-10 conc.
4.1%
IUSB

iShares Core Universal USD Bond ETF

iShares · US Aggregate Bond

88 composite / 100
Expense ratio
0.060%
Net assets
$48.08B
TTM yield
4.34%
Top-10 conc.
3.5%

Sub-score comparison

97
Cost
94
52
Tax efficiency
52
100
Liquidity
100
100
Concentration
100
—
Tracking quality
—
BND sub-score IUSB

Tracking quality isn't part of the composite — see what we don't score for why.

Cost difference

BND is 3 bps cheaper than IUSB. On a $100,000 position that's about $30/yr more in fees for IUSB.

Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with BND vs IUSB.

Top shared holdings

9,105 shared in total
# Holding In BND In IUSB Overlap
1 United States Treasury Note/Bond 0.40% 0.36% 0.36%
2 United States Treasury Note/Bond 0.41% 0.35% 0.35%
3 United States Treasury Note/Bond 0.39% 0.34% 0.34%
4 United States Treasury Note/Bond 0.41% 0.34% 0.34%
5 United States Treasury Note/Bond 0.41% 0.34% 0.34%
6 United States Treasury Note/Bond 0.36% 0.33% 0.33%
7 United States Treasury Note/Bond 0.41% 0.33% 0.33%
8 United States Treasury Note/Bond 0.41% 0.33% 0.33%
9 United States Treasury Note/Bond 0.32% 0.33% 0.32%
10 United States Treasury Note/Bond 0.34% 0.31% 0.31%
11 United States Treasury Note/Bond 0.33% 0.30% 0.30%
12 United States Treasury Note/Bond 0.29% 0.32% 0.29%

Only in BND

8,291 total
  • United States Treasury Note/Bond 0.19%
  • United States Treasury Note/Bond 0.18%
  • United States Treasury Note/Bond 0.17%
  • United States Treasury Note/Bond 0.16%
  • United States Treasury Note/Bond 0.15%
  • United States Treasury Note/Bond 0.13%
  • United States Treasury Note/Bond 0.12%
  • Ginnie Mae II Pool 0.11%
  • United States Treasury Note/Bond 0.10%
  • United States Treasury Note/Bond 0.08%

Only in IUSB

8,939 total
  • United States of America 0.21%
  • Government National Mortgage Association 0.16%
  • Government National Mortgage Association 0.14%
  • Government National Mortgage Association 0.13%
  • Government National Mortgage Association 0.13%
  • Federal Home Loan Mortgage Corp. 0.11%
  • Federal Home Loan Mortgage Corp. 0.11%
  • Federal National Mortgage Association or Federal Home Loan Mortgage Corp. 0.10%
  • Federal National Mortgage Association or Federal Home Loan Mortgage Corp. 0.10%
  • Federal National Mortgage Association 0.09%

Related comparisons

More comparisons with BND

More comparisons with IUSB

Percentages are holdings overlap with the named fund.

Open BND or IUSB at a brokerage

Both funds trade commission-free at major US brokerages.

Open at Fidelity

Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.

Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see /methodology/.

Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.