SPAB vs SPTI: Holdings Overlap
SPABState Street® SPDR® Portfolio Aggregate Bond ETF
State Street (SPDR) · 8489 holdings · $9.8B · as of 2026-08-06
SPTIState Street® SPDR® Portfolio Intermediate Term Treasury ETF
State Street (SPDR) · 103 holdings · $10.6B · as of 2026-08-06
How similar are SPAB and SPTI?
State Street® SPDR® Portfolio Aggregate Bond ETF (SPAB, by State Street (SPDR)) holds 8489 positions; State Street® SPDR® Portfolio Intermediate Term Treasury ETF (SPTI, by State Street (SPDR)) holds 103. They have 95 holdings in common, and by portfolio weight the two funds are 19.8% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 19.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 95SPAB holds 8489 · SPTI holds 103
- Weight in Shared Holdings
- SPAB 20%·SPTI 94%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 SPAB
8394 of 8489 positions (79.4% of the fund) are not held by SPTI. Showing the top 30 by weight.
- US TREASURY N/B 12/28 3.50.77%
- US TREASURY N/B 11/28 4.3750.43%
- US TREASURY N/B 01/28 3.50.42%
- US TREASURY N/B 12/27 3.3750.38%
- FNMA TBA 30 YR 5.5 SINGLE FAMILY MORTGAGE0.38%
- US TREASURY N/B 08/28 1.1250.34%
Only in SPTI
8 of 103 positions (4.9% of the fund) are not held by SPAB.
- US TREASURY N/B 11/31 1.3751.48%
- US TREASURY N/B 05/32 2.8751.44%
- US TREASURY N/B 05/30 0.6250.97%
- US TREASURY N/B 11/29 1.750.63%
- US TREASURY N/B 02/36 4.50.14%
- US TREASURY N/B 02/31 5.3750.13%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPAB | -0.3% | +0.0% | +2.5% | +4.2% | -0.2% | +1.4% | 4.11% |
| 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 SPAB vs SPTI →
Shared Holdings(95)
The top 10 shared positions account for 19% of the overlap, led by US TREASURY N/B 03/31 3.875, US TREASURY N/B 11/34 4.25 and US TREASURY N/B 08/35 4.25.
| US TREASURY N/B 03/31 3.875 | 0.41% | 0.75% | 0.41% |
|---|---|---|---|
| US TREASURY N/B 11/34 4.25 | 0.38% | 1.91% | 0.38% |
| US TREASURY N/B 08/35 4.25 | 0.38% | 1.92% | 0.38% |
| US TREASURY N/B 05/36 4.375 | 0.38% | 1.59% | 0.38% |
| US TREASURY N/B 05/35 4.25 | 0.37% | 1.89% | 0.37% |
| US TREASURY N/B 11/35 4 | 0.37% | 1.76% | 0.37% |
| US TREASURY N/B 02/36 4.125 | 0.37% | 1.70% | 0.37% |
| US TREASURY N/B 05/34 4.375 | 0.36% | 1.87% | 0.36% |
| US TREASURY N/B 08/33 3.875 | 0.36% | 1.61% | 0.36% |
| US TREASURY N/B 11/33 4.5 | 0.36% | 1.82% | 0.36% |
| US TREASURY N/B 02/35 4.625 | 0.36% | 1.96% | 0.36% |
| US TREASURY N/B 08/34 3.875 | 0.35% | 1.78% | 0.35% |
| US TREASURY N/B 02/34 4 | 0.33% | 1.84% | 0.33% |
| US TREASURY N/B 12/30 3.625 | 0.33% | 1.07% | 0.33% |
| US TREASURY N/B 02/31 3.5 | 0.33% | 1.17% | 0.33% |
| US TREASURY N/B 04/31 3.875 | 0.32% | 0.98% | 0.32% |
| US TREASURY N/B 08/29 3.625 | 0.30% | 0.85% | 0.30% |
| US TREASURY N/B 02/32 1.875 | 0.30% | 1.45% | 0.30% |
| US TREASURY N/B 07/30 3.875 | 0.29% | 1.10% | 0.29% |
| US TREASURY N/B 12/30 3.75 | 0.27% | 0.56% | 0.27% |
| US TREASURY N/B 05/33 3.375 | 0.27% | 1.44% | 0.27% |
| US TREASURY N/B 08/32 2.75 | 0.26% | 1.65% | 0.26% |
| US TREASURY N/B 01/31 3.75 | 0.26% | 1.06% | 0.26% |
| US TREASURY N/B 10/30 3.625 | 0.26% | 1.06% | 0.26% |
| US TREASURY N/B 05/31 4.625 | 0.26% | 0.73% | 0.26% |
Frequently Asked Questions
How much do SPAB and SPTI overlap?
SPAB and SPTI overlap by 19.8% of portfolio weight. They share 95 holdings (SPAB holds 8489 positions and SPTI holds 103), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPAB and SPTI?
The two portfolios are 19.8% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of SPAB and SPTI?
The largest positions held by both funds are US TREASURY N/B 03/31 3.875, US TREASURY N/B 11/34 4.25, US TREASURY N/B 08/35 4.25, US TREASURY N/B 05/36 4.375 and US TREASURY N/B 05/35 4.25. Together the top 10 shared positions account for 19% of the total overlap.
What does SPAB own that SPTI doesn't?
8394 positions (79.4% of SPAB) are unique to SPAB, led by US TREASURY N/B 12/28 3.5, US TREASURY N/B 11/28 4.375 and US TREASURY N/B 01/28 3.5. In the other direction, 8 positions (4.9% of SPTI) are unique to SPTI.