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ETF comparison

BSV vs MBB

Both US Aggregate Bond.

Vanguard Short-Term Bond Index Fund ETF Shares · iShares MBS ETF

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

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

BSV unmatched 98.6% Shared 0.0% MBB unmatched 98.1%

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 BSV only
3,185 positions
Shared
0 positions
In MBB only
11,144 positions

Side by side

BSV

Vanguard Short-Term Bond Index Fund ETF Shares

Vanguard · US Aggregate Bond

89 composite / 100
Expense ratio
0.030%
Net assets
$69.54B
whole fund, 5 share classes
TTM yield
4.10%
Top-10 conc.
8.4%
MBB

iShares MBS ETF

iShares · US Aggregate Bond

89 composite / 100
Expense ratio
0.040%
Net assets
$36.25B
TTM yield
4.46%
Top-10 conc.
6.8%

Sub-score comparison

97
Cost
96
52
Tax efficiency
52
100
Liquidity
100
100
Concentration
100
—
Tracking quality
—
BSV sub-score MBB

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

Cost difference

BSV 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. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with BSV vs MBB.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in BSV

3,185 total
  • United States Treasury Note/Bond 1.12%
  • United States Treasury Note/Bond 0.89%
  • United States Treasury Note/Bond 0.88%
  • United States Treasury Note/Bond 0.81%
  • United States Treasury Note/Bond 0.80%
  • United States Treasury Note/Bond 0.79%
  • United States Treasury Note/Bond 0.78%
  • United States Treasury Note/Bond 0.77%
  • United States Treasury Note/Bond 0.77%
  • United States Treasury Note/Bond 0.75%

Only in MBB

11,144 total
  • Freddie Mac 1.05%
  • Government National Mortgage Association 0.95%
  • UMBS, TBA 0.83%
  • Government National Mortgage Association 0.67%
  • UMBS, TBA 0.64%
  • Government National Mortgage Association 0.55%
  • Government National Mortgage Association 0.54%
  • Government National Mortgage Association 0.53%
  • Fannie Mae 0.52%
  • Freddie Mac 0.50%

Related comparisons

More comparisons with BSV

More comparisons with MBB

Percentages are holdings overlap with the named fund.

Open BSV or MBB 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.