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ETF comparison

GOVT vs SPAB

US Treasury (Intermediate) vs US Aggregate Bond.

iShares U.S. Treasury Bond ETF · State Street SPDR Portfolio Aggregate Bond ETF

Holdings overlap

Weighted by ISIN/CUSIP
29.7 %

189 positions appear in both funds. Buying equal dollars of GOVT and SPAB would leave roughly 29.7% of each dollar exposed to the same underlying securities.

GOVT unmatched 69.0% Shared 29.7% SPAB unmatched 68.5%

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 GOVT only
25 positions
Shared
189 positions
In SPAB only
8,096 positions

Side by side

GOVT

iShares U.S. Treasury Bond ETF

iShares · US Treasury (Intermediate)

88 composite / 100
Expense ratio
0.050%
Net assets
$41.37B
TTM yield
3.75%
Top-10 conc.
21.7%
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

95
Cost
97
58
Tax efficiency
52
100
Liquidity
100
N/A
Concentration
100
—
Tracking quality
—
GOVT sub-score SPAB

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

Cost difference

SPAB is 2 bps cheaper than GOVT. On a $100,000 position that's about $20/yr more in fees for GOVT.

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 GOVT vs SPAB.

Top shared holdings

189 shared in total
# Holding In GOVT In SPAB Overlap
1 United States of America 0.63% 0.42% 0.42%
2 United States of America 0.77% 0.40% 0.40%
3 United States of America 0.80% 0.40% 0.40%
4 United States of America 0.45% 0.39% 0.39%
5 United States of America 0.72% 0.38% 0.38%
6 United States of America 0.83% 0.37% 0.37%
7 United States of America 0.82% 0.37% 0.37%
8 United States of America 0.44% 0.37% 0.37%
9 United States of America 0.92% 0.37% 0.37%
10 United States of America 0.37% 0.43% 0.37%
11 United States of America 0.73% 0.36% 0.36%
12 United States of America 0.99% 0.34% 0.34%

Only in GOVT

25 total
  • United States of America 5.28%
  • United States of America 1.38%
  • United States of America 0.82%
  • United States of America 0.55%
  • United States of America 0.52%
  • United States of America 0.48%
  • United States of America 0.27%
  • United States of America 0.25%
  • United States of America 0.23%
  • United States of America 0.22%

Only in SPAB

8,096 total
  • United States Treasury 0.44%
  • United States Treasury 0.32%
  • United States Treasury 0.31%
  • United States Treasury 0.30%
  • Government National Mortgage Association 0.28%
  • UMBS, TBA 0.27%
  • United States Treasury 0.27%
  • United States Treasury 0.26%
  • United States Treasury 0.26%
  • United States Treasury 0.26%

Percentages are holdings overlap with the named fund.

Open GOVT or SPAB at a brokerage

Both funds trade commission-free at major US brokerages.

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.