EAGG vs MBB: Holdings Overlap
EAGGiShares ESG Aware U.S. Aggregate Bond ETF
iShares · 5210 holdings · $5.0B · as of 2026-05-31
iShares · 11144 holdings · $39.1B · as of 2026-05-31
How similar are EAGG and MBB?
iShares ESG Aware U.S. Aggregate Bond ETF (EAGG, by iShares) holds 5210 positions; iShares MBS ETF (MBB, by iShares) holds 11144. They have 696 holdings in common, and by portfolio weight the two funds are 12.9% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 12.9%Sum of the smaller weight of each shared holding
- Shared Holdings
- 696EAGG holds 5210 · MBB holds 11144
- Weight in Shared Holdings
- EAGG 17%·MBB 40%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 EAGG
4514 of 5210 positions (81.9% of the fund) are not held by MBB. Showing the top 30 by weight.
- U.S. Treasury Notes0.47%
- U.S. Treasury Notes0.41%
- U.S. Treasury Notes0.40%
- U.S. Treasury Notes0.40%
- U.S. Treasury Notes0.39%
- U.S. Treasury Notes0.38%
Only in MBB
10448 of 11144 positions (58.1% of the fund) are not held by EAGG. Showing the top 30 by weight.
- Ginnie Mae II Pool0.54%
- Fannie Mae Pool0.44%
- Fannie Mae Pool0.44%
- Fannie Mae Pool0.33%
- Fannie Mae Pool0.28%
- Ginnie Mae II Pool0.27%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| EAGG | -0.3% | -0.0% | +2.4% | +4.1% | -0.3% | — | 4.05% |
| MBB | -0.2% | +0.4% | +3.9% | +4.7% | +0.3% | +1.2% | 4.33% |
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 EAGG vs MBB →
Shared Holdings(696)
The top 10 shared positions account for 15% of the overlap, led by Uniform Mortgage-Backed Security, TBA, Uniform Mortgage-Backed Security, TBA and Uniform Mortgage-Backed Security, TBA.
| Uniform Mortgage-Backed Security, TBA | 0.35% | 0.34% | 0.34% |
|---|---|---|---|
| Uniform Mortgage-Backed Security, TBA | 0.32% | 0.26% | 0.26% |
| Uniform Mortgage-Backed Security, TBA | 0.20% | 0.64% | 0.20% |
| Ginnie Mae | 0.19% | 0.95% | 0.19% |
| Freddie Mac Pool | 0.42% | 0.18% | 0.18% |
| Ginnie Mae II Pool | 0.18% | 0.55% | 0.18% |
| Uniform Mortgage-Backed Security, TBA | 0.17% | 0.83% | 0.17% |
| Ginnie Mae | 0.16% | 0.67% | 0.16% |
| Ginnie Mae | 0.15% | 0.23% | 0.15% |
| Ginnie Mae II Pool | 0.15% | 0.31% | 0.15% |
| Ginnie Mae II Pool | 0.12% | 0.30% | 0.12% |
| Fannie Mae Pool | 0.12% | 0.13% | 0.12% |
| Ginnie Mae II Pool | 0.11% | 0.28% | 0.11% |
| Ginnie Mae II Pool | 0.12% | 0.11% | 0.11% |
| Ginnie Mae II Pool | 0.10% | 0.13% | 0.10% |
| Fannie Mae Pool | 0.09% | 0.12% | 0.09% |
| Fannie Mae Pool | 0.09% | 0.19% | 0.09% |
| Uniform Mortgage-Backed Security, TBA | 0.09% | 0.16% | 0.09% |
| Ginnie Mae II Pool | 0.09% | 0.20% | 0.09% |
| Fannie Mae Pool | 0.09% | 0.30% | 0.09% |
| Fannie Mae Pool | 0.09% | 0.09% | 0.09% |
| Freddie Mac Pool | 0.08% | 0.12% | 0.08% |
| Ginnie Mae II Pool | 0.08% | 0.13% | 0.08% |
| Fannie Mae Pool | 0.08% | 0.31% | 0.08% |
| Freddie Mac Pool | 0.08% | 0.24% | 0.08% |
Showing the top 250 of 696 shared holdings by overlap weight.
Frequently Asked Questions
How much do EAGG and MBB overlap?
EAGG and MBB overlap by 12.9% of portfolio weight. They share 696 holdings (EAGG holds 5210 positions and MBB holds 11144), based on each fund's latest SEC-reported holdings.
Is it redundant to own both EAGG and MBB?
The two portfolios are 12.9% 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 EAGG and MBB?
The largest positions held by both funds are Uniform Mortgage-Backed Security, TBA, Uniform Mortgage-Backed Security, TBA, Uniform Mortgage-Backed Security, TBA, Ginnie Mae and Freddie Mac Pool. Together the top 10 shared positions account for 15% of the total overlap.
What does EAGG own that MBB doesn't?
4514 positions (81.9% of EAGG) are unique to EAGG, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. In the other direction, 10448 positions (58.1% of MBB) are unique to MBB.