AGG vs SHY: Holdings Overlap
AGGiShares Core U.S. Aggregate Bond ETF
iShares · 13266 holdings · $137.7B · as of 2026-05-31
SHYiShares 1-3 Year Treasury Bond ETF
iShares · 89 holdings · $25.2B · as of 2026-05-31
How similar are AGG and SHY?
iShares Core U.S. Aggregate Bond ETF (AGG, by iShares) holds 13266 positions; iShares 1-3 Year Treasury Bond ETF (SHY, by iShares) holds 89. They have 89 holdings in common, and by portfolio weight the two funds are 15.3% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 15.3%Sum of the smaller weight of each shared holding
- Shared Holdings
- 89AGG holds 13266 · SHY holds 89
- Weight in Shared Holdings
- AGG 15%·SHY 99%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
13177 of 13266 positions (83.2% of the fund) are not held by SHY. 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 SHY
Every position in SHY is also held by AGG, so it brings nothing the other fund doesn’t already own.
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% |
| SHY | +0.4% | +1.0% | +2.8% | +4.2% | +1.8% | +1.7% | 3.63% |
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 SHY →
Shared Holdings(89)
The top 10 shared positions account for 17% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 0.35% | 0.84% | 0.35% |
|---|---|---|---|
| U.S. Treasury Notes | 0.31% | 1.71% | 0.31% |
| U.S. Treasury Notes | 0.26% | 0.26% | 0.26% |
| U.S. Treasury Notes | 0.25% | 0.42% | 0.25% |
| U.S. Treasury Notes | 0.25% | 0.73% | 0.25% |
| U.S. Treasury Notes | 0.24% | 1.32% | 0.24% |
| U.S. Treasury Notes | 0.24% | 1.38% | 0.24% |
| U.S. Treasury Notes | 0.24% | 0.63% | 0.24% |
| U.S. Treasury Notes | 0.24% | 1.48% | 0.24% |
| U.S. Treasury Notes | 0.24% | 1.38% | 0.24% |
| U.S. Treasury Notes | 0.23% | 1.29% | 0.23% |
| U.S. Treasury Notes | 0.23% | 1.33% | 0.23% |
| U.S. Treasury Notes | 0.23% | 1.27% | 0.23% |
| U.S. Treasury Notes | 0.23% | 1.34% | 0.23% |
| U.S. Treasury Notes | 0.23% | 1.38% | 0.23% |
| U.S. Treasury Notes | 0.22% | 1.84% | 0.22% |
| U.S. Treasury Notes | 0.22% | 1.40% | 0.22% |
| U.S. Treasury Notes | 0.22% | 1.34% | 0.22% |
| U.S. Treasury Notes | 0.22% | 1.35% | 0.22% |
| U.S. Treasury Notes | 0.21% | 1.52% | 0.21% |
| U.S. Treasury Notes | 0.21% | 1.02% | 0.21% |
| U.S. Treasury Notes | 0.21% | 1.43% | 0.21% |
| U.S. Treasury Notes | 0.21% | 0.89% | 0.21% |
| U.S. Treasury Notes | 0.21% | 1.34% | 0.21% |
| U.S. Treasury Notes | 0.21% | 1.12% | 0.21% |
Frequently Asked Questions
How much do AGG and SHY overlap?
AGG and SHY overlap by 15.3% of portfolio weight. They share 89 holdings (AGG holds 13266 positions and SHY holds 89), based on each fund's latest SEC-reported holdings.
Is it redundant to own both AGG and SHY?
The two portfolios are 15.3% 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 AGG and SHY?
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 17% of the total overlap.
What does AGG own that SHY doesn't?
13177 positions (83.2% 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, 0 positions (0.0% of SHY) are unique to SHY.