ETF comparison
AGG vs SPTL
US Aggregate Bond vs US Treasury (Long).
iShares Core U.S. Aggregate Bond ETF · State Street SPDR Portfolio Long Term Treasury ETF
Holdings overlap
97 positions appear in both funds. Buying equal dollars of AGG and SPTL would leave roughly 9.3% 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
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 AGG vs SPTL.
Top shared holdings
97 shared in total| # | Holding | In AGG | In SPTL | Overlap |
|---|---|---|---|---|
| 1 | United States Treasury | 0.21% | 2.11% | 0.21% |
| 2 | United States Treasury | 0.21% | 2.20% | 0.21% |
| 3 | United States Treasury | 0.21% | 2.21% | 0.21% |
| 4 | United States Treasury | 0.21% | 2.16% | 0.21% |
| 5 | United States Treasury | 0.21% | 2.14% | 0.21% |
| 6 | United States Treasury | 0.20% | 2.11% | 0.20% |
| 7 | United States Treasury | 0.20% | 2.04% | 0.20% |
| 8 | United States Treasury | 0.20% | 2.04% | 0.20% |
| 9 | United States Treasury | 0.18% | 1.80% | 0.18% |
| 10 | United States Treasury | 0.18% | 1.61% | 0.18% |
| 11 | United States Treasury | 0.18% | 2.17% | 0.18% |
| 12 | United States Treasury | 0.17% | 1.51% | 0.17% |
Only in AGG
13,169 total- United States Treasury 0.42%
- United States Treasury 0.41%
- United States Treasury 0.41%
- United States Treasury 0.40%
- United States Treasury 0.40%
- United States Treasury 0.39%
- United States Treasury 0.39%
- United States Treasury 0.39%
- United States Treasury 0.39%
- United States Treasury 0.38%
Only in SPTL
2 total- United States Treasury 1.00%
- United States Treasury 0.72%
Related comparisons
More comparisons with AGG
- AGG vs VGLT · Vanguard Long-Term Treasury Index Fund ETF Shares 9.3%
- AGG vs VCSH · Vanguard Short-Term Corporate Bond Index Fund ETF Shares 8.8%
- AGG vs IGLB · iShares 10+ Year Investment Grade Corporate Bond ETF 7.9%
- AGG vs VMBS · Vanguard Mortgage-Backed Securities Index Fund ETF Shares 7.6%
- AGG vs SPLB · State Street SPDR Portfolio Long Term Corporate Bond ETF 7.4%
- AGG vs VCLT · Vanguard Long-Term Corporate Bond Index Fund ETF Shares 6.9%
More comparisons with SPTL
- SPTL vs BNDX · Vanguard Total International Bond Index Fund ETF Shares 0.0%
- SPTL vs EDV · Vanguard Extended Duration Treasury Index Fund ETF Shares 0.0%
- SPTL vs SCHP · Schwab U.S. TIPS ETF 0.0%
- SPTL vs SHY · iShares 1-3 Year Treasury Bond ETF 0.0%
- SPTL vs TIP · iShares TIPS Bond ETF 0.0%
- SPTL vs VGSH · Vanguard Short-Term Treasury Index Fund ETF Shares 0.0%
Percentages are holdings overlap with the named fund.
Open AGG or SPTL 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.