IUSB vs EAGG: Holdings Overlap
IUSBiShares Core Universal USD Bond ETF
iShares · 17783 holdings · $43.2B · as of 2026-04-30
EAGGiShares ESG Aware U.S. Aggregate Bond ETF
iShares · 5210 holdings · $5.0B · as of 2026-05-31
Holdings snapshots are 31 days apart (IUSB: 2026-04-30, EAGG: 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 IUSB and EAGG?
iShares Core Universal USD Bond ETF (IUSB, by iShares) holds 17783 positions; iShares ESG Aware U.S. Aggregate Bond ETF (EAGG, by iShares) holds 5210. They have 4913 holdings in common, and by portfolio weight the two funds are 55.0% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 55.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 4913IUSB holds 17783 · EAGG holds 5210
- Weight in Shared Holdings
- IUSB 62%·EAGG 88%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 IUSB
12870 of 17783 positions (36.9% of the fund) are not held by EAGG. Showing the top 30 by weight.
- Uniform Mortgage-Backed Securities0.32%
- Uniform Mortgage-Backed Securities0.22%
- Government National Mortgage Association0.21%
- Uniform Mortgage-Backed Securities0.20%
- U.S. Treasury Notes0.19%
- Uniform Mortgage-Backed Securities0.19%
Only in EAGG
297 of 5210 positions (10.2% of the fund) are not held by IUSB. Showing the top 30 by weight.
- Uniform Mortgage-Backed Security, TBA0.51%
- Uniform Mortgage-Backed Security, TBA0.35%
- Uniform Mortgage-Backed Security, TBA0.32%
- Uniform Mortgage-Backed Security, TBA0.32%
- Fannie Mae Pool0.25%
- Ginnie Mae0.25%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IUSB | -0.2% | +0.3% | +2.8% | +4.7% | +0.2% | +1.8% | 4.28% |
| EAGG | -0.3% | -0.0% | +2.4% | +4.1% | -0.3% | — | 4.05% |
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 IUSB vs EAGG →
Shared Holdings(4913)
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 | 0.37% | 0.39% | 0.37% |
|---|---|---|---|
| U.S. Treasury Notes | 0.37% | 0.40% | 0.37% |
| U.S. Treasury Notes | 0.37% | 0.37% | 0.37% |
| U.S. Treasury Notes | 0.36% | 0.38% | 0.36% |
| U.S. Treasury Notes | 0.36% | 0.47% | 0.36% |
| U.S. Treasury Notes | 0.36% | 0.41% | 0.36% |
| U.S. Treasury Notes | 0.35% | 0.34% | 0.34% |
| U.S. Treasury Notes | 0.34% | 0.40% | 0.34% |
| U.S. Treasury Notes | 0.33% | 0.37% | 0.33% |
| U.S. Treasury Notes | 0.37% | 0.32% | 0.32% |
| U.S. Treasury Notes | 0.33% | 0.32% | 0.32% |
| U.S. Treasury Notes | 0.31% | 0.36% | 0.31% |
| U.S. Treasury Notes | 0.30% | 0.31% | 0.30% |
| U.S. Treasury Notes | 0.29% | 0.29% | 0.29% |
| U.S. Treasury Notes | 0.29% | 0.29% | 0.29% |
| U.S. Treasury Notes | 0.31% | 0.27% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.38% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.35% | 0.27% |
| U.S. Treasury Notes | 0.26% | 0.27% | 0.26% |
| U.S. Treasury Notes | 0.26% | 0.32% | 0.26% |
| U.S. Treasury Notes | 0.25% | 0.27% | 0.25% |
| U.S. Treasury Notes | 0.27% | 0.25% | 0.25% |
| U.S. Treasury Notes | 0.25% | 0.25% | 0.25% |
| U.S. Treasury Notes | 0.25% | 0.24% | 0.24% |
| U.S. Treasury Notes | 0.24% | 0.25% | 0.24% |
Showing the top 250 of 4913 shared holdings by overlap weight.
Frequently Asked Questions
How much do IUSB and EAGG overlap?
IUSB and EAGG overlap by 55.0% of portfolio weight. They share 4913 holdings (IUSB holds 17783 positions and EAGG holds 5210), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IUSB and EAGG?
The two portfolios are 55.0% identical by weight. Owning both is defensible: they share a meaningful core, but each fund adds exposure the other lacks.
What are the biggest shared holdings of IUSB and EAGG?
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 IUSB own that EAGG doesn't?
12870 positions (36.9% of IUSB) are unique to IUSB, led by Uniform Mortgage-Backed Securities, Uniform Mortgage-Backed Securities and Government National Mortgage Association. In the other direction, 297 positions (10.2% of EAGG) are unique to EAGG.