PlainIndex

ETF comparison

BND vs MBB

Both US Aggregate Bond.

Vanguard Total Bond Market Index Fund · iShares MBS ETF

Holdings overlap

0.0 %

0 positions appear in both funds. Buying equal dollars of BND and MBB would leave roughly 0.0% of each dollar exposed to the same underlying securities.

BND only 0.0% Shared 0.0% MBB only 0.0%
In BND only
0 positions
Shared
0 positions
In MBB only
0 positions

Holdings data for BND covers 0.0% of fund weight. The remainder lacks matchable identifiers in the N-PORT filing.

Holdings data for MBB covers 0.0% of fund weight. The remainder lacks matchable identifiers in the N-PORT filing.

Side by side

BND

Vanguard Total Bond Market Index Fund

Vanguard · US Aggregate Bond

86 composite / 100
Expense ratio
0.030%
Net assets
$389.70B
TTM yield
3.93%
Top-10 conc.
—
MBB

iShares MBS ETF

iShares · US Aggregate Bond

85 composite / 100
Expense ratio
0.040%
Net assets
$38.31B
TTM yield
4.23%
Top-10 conc.
—

Sub-score comparison

97
Cost
96
46
Tax efficiency
45
100
Liquidity
100
N/A
Concentration
N/A
—
Tracking quality
—
BND sub-score MBB

Tracking-quality sub-score is not yet computed for any fund — see methodology for which inputs are live.

Cost difference

BND is 1 bps cheaper than MBB. On a $100,000 position that's about $10/yr more in fees for MBB.

Fee figure is the annual expense charged on $100,000. It compounds over time — we publish a fuller cost-projection calculator on the methodology page.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in BND

0 total

Every BND position is also held by MBB.

Only in MBB

0 total

Every MBB position is also held by BND.

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.