AGG vs SPTI: Holdings Overlap
AGGiShares Core U.S. Aggregate Bond ETF
iShares · 13266 holdings · $137.7B · as of 2026-05-31
SPTIState Street® SPDR® Portfolio Intermediate Term Treasury ETF
State Street (SPDR) · 103 holdings · $10.6B · as of 2026-08-06
Holdings snapshots are 67 days apart (AGG: 2026-05-31, SPTI: 2026-08-06). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are AGG and SPTI?
iShares Core U.S. Aggregate Bond ETF (AGG, by iShares) holds 13266 positions; State Street® SPDR® Portfolio Intermediate Term Treasury ETF (SPTI, by State Street (SPDR)) holds 103. They have 0 holdings in common, and by portfolio weight the two funds are 0.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 0AGG holds 13266 · SPTI holds 103
- Weight in Shared Holdings
- AGG 0%·SPTI 0%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in AGG
13266 of 13266 positions (98.5% of the fund) are not held by SPTI. Showing the top 30 by weight.
- U.S. Treasury Notes0.42%
- U.S. Treasury Notes0.41%
- U.S. Treasury Notes0.41%
- U.S. Treasury Notes0.40%
- U.S. Treasury Notes0.40%
- U.S. Treasury Notes0.39%
Only in SPTI
103 of 103 positions (99.0% of the fund) are not held by AGG. Showing the top 30 by weight.
- US TREASURY N/B 02/35 4.6251.96%
- US TREASURY N/B 08/35 4.251.92%
- US TREASURY N/B 11/34 4.251.91%
- US TREASURY N/B 05/35 4.251.89%
- US TREASURY N/B 05/34 4.3751.87%
- US TREASURY N/B 02/34 41.84%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| AGG | -0.3% | +0.0% | +2.4% | +4.2% | -0.2% | +1.4% | 4.04% |
| SPTI | +0.1% | -0.3% | +1.7% | +3.8% | -0.1% | +1.3% | 3.89% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in AGG vs SPTI →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do AGG and SPTI overlap?
AGG and SPTI overlap by 0.0% of portfolio weight. They share 0 holdings (AGG holds 13266 positions and SPTI holds 103), based on each fund's latest SEC-reported holdings.
Is it redundant to own both AGG and SPTI?
The two portfolios are 0.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What does AGG own that SPTI doesn't?
13266 positions (98.5% of AGG) are unique to AGG, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. In the other direction, 103 positions (99.0% of SPTI) are unique to SPTI.