SCHZ vs AGG: Holdings Overlap
SCHZSchwab U.S. Aggregate Bond ETF
Schwab · 12081 holdings · $10.5B · as of 2026-03-31
AGGiShares Core U.S. Aggregate Bond ETF
iShares · 13266 holdings · $137.7B · as of 2026-05-31
Holdings snapshots are 61 days apart (SCHZ: 2026-03-31, AGG: 2026-05-31). 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 SCHZ and AGG?
Schwab U.S. Aggregate Bond ETF (SCHZ, by Schwab) holds 12081 positions; iShares Core U.S. Aggregate Bond ETF (AGG, by iShares) holds 13266. They have 9418 holdings in common, and by portfolio weight the two funds are 67.0% identical. In practical terms the pair is heavily overlapping, with largely the same stocks driving both funds.
- Overlap by Weight
- 67.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 9418SCHZ holds 12081 · AGG holds 13266
- Weight in Shared Holdings
- SCHZ 78%·AGG 78%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 SCHZ
2663 of 12081 positions (20.5% of the fund) are not held by AGG. Showing the top 30 by weight.
- Uniform Mortgage-Backed Security, TBA0.34%
- Uniform Mortgage-Backed Security, TBA0.28%
- U.S. Treasury Notes0.25%
- U.S. Treasury Notes0.24%
- Uniform Mortgage-Backed Security, TBA0.22%
- U.S. Treasury Notes0.22%
Only in AGG
3848 of 13266 positions (20.7% of the fund) are not held by SCHZ. Showing the top 30 by weight.
- U.S. Treasury Notes0.30%
- Uniform Mortgage-Backed Security, TBA0.20%
- Uniform Mortgage-Backed Security, TBA0.16%
- Ginnie Mae0.14%
- Freddie Mac Pool0.14%
- Uniform Mortgage-Backed Security, TBA0.14%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SCHZ | -0.2% | +0.1% | +2.5% | +4.2% | -0.2% | +1.4% | 4.20% |
| AGG | -0.3% | +0.0% | +2.4% | +4.2% | -0.2% | +1.4% | 4.04% |
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 SCHZ vs AGG →
Shared Holdings(9418)
The top 10 shared positions account for 6% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 0.39% | 0.42% | 0.39% |
|---|---|---|---|
| U.S. Treasury Notes | 0.44% | 0.39% | 0.39% |
| U.S. Treasury Notes | 0.38% | 0.39% | 0.38% |
| U.S. Treasury Notes | 0.38% | 0.38% | 0.38% |
| U.S. Treasury Notes | 0.38% | 0.39% | 0.38% |
| U.S. Treasury Notes | 0.38% | 0.39% | 0.38% |
| U.S. Treasury Notes | 0.38% | 0.41% | 0.38% |
| U.S. Treasury Notes | 0.37% | 0.40% | 0.37% |
| U.S. Treasury Notes | 0.36% | 0.40% | 0.36% |
| U.S. Treasury Notes | 0.34% | 0.35% | 0.34% |
| U.S. Treasury Notes | 0.31% | 0.41% | 0.31% |
| U.S. Treasury Notes | 0.31% | 0.31% | 0.31% |
| U.S. Treasury Notes | 0.30% | 0.33% | 0.30% |
| U.S. Treasury Notes | 0.32% | 0.29% | 0.29% |
| U.S. Treasury Notes | 0.29% | 0.33% | 0.29% |
| U.S. Treasury Notes | 0.28% | 0.32% | 0.28% |
| U.S. Treasury Notes | 0.28% | 0.31% | 0.28% |
| U.S. Treasury Notes | 0.31% | 0.27% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.29% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.27% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.31% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.28% | 0.27% |
| U.S. Treasury Notes | 0.31% | 0.26% | 0.26% |
| U.S. Treasury Notes | 0.26% | 0.29% | 0.26% |
| U.S. Treasury Notes | 0.26% | 0.31% | 0.26% |
Showing the top 250 of 9418 shared holdings by overlap weight.
Frequently Asked Questions
How much do SCHZ and AGG overlap?
SCHZ and AGG overlap by 67.0% of portfolio weight. They share 9418 holdings (SCHZ holds 12081 positions and AGG holds 13266), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SCHZ and AGG?
The two portfolios are 67.0% identical by weight. Owning both mostly doubles down on the shared core rather than diversifying: the same large positions drive both funds.
What are the biggest shared holdings of SCHZ and AGG?
The largest positions held by both funds are U.S. Treasury Notes, U.S. Treasury Notes, U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. Together the top 10 shared positions account for 6% of the total overlap.
What does SCHZ own that AGG doesn't?
2663 positions (20.5% of SCHZ) are unique to SCHZ, led by Uniform Mortgage-Backed Security, TBA, Uniform Mortgage-Backed Security, TBA and U.S. Treasury Notes. In the other direction, 3848 positions (20.7% of AGG) are unique to AGG.