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ETF comparison

BLV vs SPAB

Both US Aggregate Bond.

Vanguard Long-Term Bond Index Fund ETF Shares · State Street SPDR Portfolio Aggregate Bond ETF

Holdings overlap

Weighted by ISIN/CUSIP
17.1 %

1,894 positions appear in both funds. Buying equal dollars of BLV and SPAB would leave roughly 17.1% of each dollar exposed to the same underlying securities.

BLV unmatched 81.6% Shared 17.1% SPAB unmatched 81.1%

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 BLV only
1,089 positions
Shared
1,894 positions
In SPAB only
6,391 positions

Side by side

BLV

Vanguard Long-Term Bond Index Fund ETF Shares

Vanguard · US Aggregate Bond

87 composite / 100
Expense ratio
0.030%
Net assets
$7.79B
whole fund, 4 share classes
TTM yield
5.08%
Top-10 conc.
11.0%
SPAB

State Street SPDR Portfolio Aggregate Bond ETF

State Street · US Aggregate Bond

89 composite / 100
Expense ratio
0.030%
Net assets
$9.90B
TTM yield
4.22%
Top-10 conc.
4.4%

Sub-score comparison

97
Cost
97
50
Tax efficiency
52
95
Liquidity
100
99
Concentration
100
—
Tracking quality
—
BLV sub-score SPAB

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

Cost difference

Expense ratios are effectively identical (0.030% vs 0.030%).

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 BLV vs SPAB.

Top shared holdings

1,894 shared in total
# Holding In BLV In SPAB Overlap
1 United States Treasury Note/Bond 0.70% 0.32% 0.32%
2 United States Treasury Note/Bond 0.60% 0.26% 0.26%
3 United States Treasury Note/Bond 0.70% 0.26% 0.26%
4 United States Treasury Note/Bond 0.97% 0.25% 0.25%
5 United States Treasury Note/Bond 1.06% 0.25% 0.25%
6 United States Treasury Note/Bond 1.13% 0.24% 0.24%
7 United States Treasury Note/Bond 0.53% 0.24% 0.24%
8 United States Treasury Note/Bond 1.15% 0.23% 0.23%
9 United States Treasury Note/Bond 1.08% 0.23% 0.23%
10 United States Treasury Note/Bond 0.68% 0.23% 0.23%
11 United States Treasury Note/Bond 1.17% 0.23% 0.23%
12 United States Treasury Note/Bond 0.54% 0.22% 0.22%

Only in BLV

1,089 total
  • United States Treasury Note/Bond 0.66%
  • United States Treasury Note/Bond 0.49%
  • United States Treasury Note/Bond 0.47%
  • United States Treasury Note/Bond 0.38%
  • United States Treasury Note/Bond 0.37%
  • United States Treasury Note/Bond 0.35%
  • United States Treasury Note/Bond 0.35%
  • United States Treasury Note/Bond 0.24%
  • United States Treasury Note/Bond 0.23%
  • United States Treasury Note/Bond 0.23%

Only in SPAB

6,391 total
  • United States Treasury 0.79%
  • United States Treasury 0.44%
  • United States Treasury 0.43%
  • United States Treasury 0.42%
  • United States Treasury 0.40%
  • United States Treasury 0.40%
  • United States Treasury 0.39%
  • United States Treasury 0.38%
  • United States Treasury 0.37%
  • United States Treasury 0.37%

Related comparisons

More comparisons with BLV

More comparisons with SPAB

Percentages are holdings overlap with the named fund.

Open BLV or SPAB 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.