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ETF comparison

BNDX vs SPMB

International Bond vs US Aggregate Bond.

Vanguard Total International Bond Index Fund ETF Shares · State Street SPDR Portfolio Mortgage Backed Bond ETF

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

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

BNDX unmatched 98.0% Shared 0.0% SPMB 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 BNDX only
6,818 positions
Shared
0 positions
In SPMB only
2,699 positions

Side by side

BNDX

Vanguard Total International Bond Index Fund ETF Shares

Vanguard · International Bond

87 composite / 100
Expense ratio
0.070%
Net assets
$121.63B
whole fund, 5 share classes
TTM yield
4.65%
Top-10 conc.
3.5%
SPMB

State Street SPDR Portfolio Mortgage Backed Bond ETF

State Street · US Aggregate Bond

87 composite / 100
Expense ratio
0.040%
Net assets
$6.82B
TTM yield
4.27%
Top-10 conc.
6.6%

Sub-score comparison

93
Cost
96
51
Tax efficiency
52
100
Liquidity
93
100
Concentration
100
—
Tracking quality
—
BNDX sub-score SPMB

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

Cost difference

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

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 BNDX vs SPMB.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in BNDX

6,818 total
  • United Kingdom Gilt 0.41%
  • French Republic Government Bond OAT 0.37%
  • French Republic Government Bond OAT 0.36%
  • United Kingdom Gilt 0.36%
  • United Kingdom Gilt 0.35%
  • United Kingdom Gilt 0.34%
  • French Republic Government Bond OAT 0.33%
  • French Republic Government Bond OAT 0.33%
  • Bundesrepublik Deutschland Bundesanleihe 0.30%
  • United Kingdom Gilt 0.30%

Only in SPMB

2,699 total
  • Freddie Mac 1.17%
  • Fannie Mae 0.79%
  • Freddie Mac 0.76%
  • UMBS, TBA 0.63%
  • Freddie Mac 0.61%
  • Freddie Mac 0.55%
  • Government National Mortgage Association 0.55%
  • Fannie Mae 0.51%
  • Fannie Mae 0.49%
  • Fannie Mae 0.47%

Related comparisons

More comparisons with BNDX

More comparisons with SPMB

Percentages are holdings overlap with the named fund.

Open BNDX or SPMB 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.