ETF comparison
SHY vs SPAB
US Treasury (Short) vs US Aggregate Bond.
iShares 1-3 Year Treasury Bond ETF · State Street SPDR Portfolio Aggregate Bond Index ETF
Holdings overlap
85 positions appear in both funds. Buying equal dollars of SHY and SPAB would leave roughly 15.4% of each dollar exposed to the same underlying securities.
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.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
SPAB is 12 bps cheaper than SHY. On a $100,000 position that's about $120/yr more in fees for SHY.
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 SHY vs SPAB.
Top shared holdings
85 shared in total| # | Holding | In SHY | In SPAB | Overlap |
|---|---|---|---|---|
| 1 | United States of America | 1.18% | 0.79% | 0.79% |
| 2 | United States of America | 1.23% | 0.44% | 0.44% |
| 3 | United States of America | 1.71% | 0.42% | 0.42% |
| 4 | United States of America | 0.73% | 0.39% | 0.39% |
| 5 | United States of America | 0.71% | 0.38% | 0.38% |
| 6 | United States of America | 1.24% | 0.34% | 0.34% |
| 7 | United States of America | 0.42% | 0.32% | 0.32% |
| 8 | United States of America | 1.40% | 0.31% | 0.31% |
| 9 | United States of America | 1.07% | 0.31% | 0.31% |
| 10 | United States of America | 0.89% | 0.30% | 0.30% |
| 11 | United States of America | 0.52% | 0.30% | 0.30% |
| 12 | United States of America | 0.92% | 0.26% | 0.26% |
Only in SHY
5 total- United States of America 1.11%
- United States of America 1.00%
- United States of America 0.96%
- United States of America 0.79%
- United States of America 0.76%
Only in SPAB
8,200 total- United States Treasury 0.43%
- United States Treasury 0.40%
- United States Treasury 0.40%
- United States Treasury 0.37%
- United States Treasury 0.37%
- United States Treasury 0.37%
- United States Treasury 0.37%
- United States Treasury 0.36%
- United States Treasury 0.34%
- United States Treasury 0.34%
Related comparisons
More comparisons with SHY
- SHY vs IUSB · iShares Core Universal USD Bond ETF 13.9%
- SHY vs NEAR · iShares Short Duration Bond Active ETF 8.1%
- SHY vs CGCP · Capital Group Core Plus Income ETF 5.1%
- SHY vs DFCF · Dimensional Core Fixed Income ETF 4.4%
- SHY vs VCRB · Vanguard Core Bond ETF 2.6%
- SHY vs SCHR · Schwab Intermediate-Term U.S. Treasury ETF 1.9%
More comparisons with SPAB
- SPAB vs DFCF · Dimensional Core Fixed Income ETF 15.2%
- SPAB vs FBND · Fidelity Total Bond ETF 14.6%
- SPAB vs VGLT · Vanguard Long-Term Treasury Index Fund ETF Shares 9.9%
- SPAB vs VMBS · Vanguard Mortgage-Backed Securities Index Fund ETF Shares 9.4%
- SPAB vs CGCP · Capital Group Core Plus Income ETF 7.7%
- SPAB vs JCPB · JPMorgan Core Plus Bond ETF 6.7%
Percentages are holdings overlap with the named fund.
Open SHY 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.