MBB vs EAGG: Holdings Overlap
iShares · 11144 holdings · $39.1B · as of 2026-05-31
EAGGiShares ESG Aware U.S. Aggregate Bond ETF
iShares · 5210 holdings · $5.0B · as of 2026-05-31
How similar are MBB and EAGG?
iShares MBS ETF (MBB, by iShares) holds 11144 positions; iShares ESG Aware U.S. Aggregate Bond ETF (EAGG, by iShares) holds 5210. 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
- 696MBB holds 11144 · EAGG holds 5210
- Weight in Shared Holdings
- MBB 40%·EAGG 17%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 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%
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%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| MBB | -0.2% | +0.4% | +3.9% | +4.7% | +0.3% | +1.2% | 4.33% |
| 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 MBB vs EAGG →
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 | 0.34% | 0.35% | 0.34% |
|---|---|---|---|
| Uniform Mortgage-Backed Security, TBA | 0.26% | 0.32% | 0.26% |
| Uniform Mortgage-Backed Security, TBA | 0.64% | 0.20% | 0.20% |
| Ginnie Mae | 0.95% | 0.19% | 0.19% |
| Freddie Mac Pool | 0.18% | 0.42% | 0.18% |
| Ginnie Mae II Pool | 0.55% | 0.18% | 0.18% |
| Uniform Mortgage-Backed Security, TBA | 0.83% | 0.17% | 0.17% |
| Ginnie Mae | 0.67% | 0.16% | 0.16% |
| Ginnie Mae | 0.23% | 0.15% | 0.15% |
| Ginnie Mae II Pool | 0.31% | 0.15% | 0.15% |
| Ginnie Mae II Pool | 0.30% | 0.12% | 0.12% |
| Fannie Mae Pool | 0.13% | 0.12% | 0.12% |
| Ginnie Mae II Pool | 0.28% | 0.11% | 0.11% |
| Ginnie Mae II Pool | 0.11% | 0.12% | 0.11% |
| Ginnie Mae II Pool | 0.13% | 0.10% | 0.10% |
| Fannie Mae Pool | 0.12% | 0.09% | 0.09% |
| Fannie Mae Pool | 0.19% | 0.09% | 0.09% |
| Uniform Mortgage-Backed Security, TBA | 0.16% | 0.09% | 0.09% |
| Ginnie Mae II Pool | 0.20% | 0.09% | 0.09% |
| Fannie Mae Pool | 0.30% | 0.09% | 0.09% |
| Fannie Mae Pool | 0.09% | 0.09% | 0.09% |
| Freddie Mac Pool | 0.12% | 0.08% | 0.08% |
| Ginnie Mae II Pool | 0.13% | 0.08% | 0.08% |
| Fannie Mae Pool | 0.31% | 0.08% | 0.08% |
| Freddie Mac Pool | 0.24% | 0.08% | 0.08% |
Showing the top 250 of 696 shared holdings by overlap weight.
Frequently Asked Questions
How much do MBB and EAGG overlap?
MBB and EAGG overlap by 12.9% of portfolio weight. They share 696 holdings (MBB holds 11144 positions and EAGG holds 5210), based on each fund's latest SEC-reported holdings.
Is it redundant to own both MBB and EAGG?
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 MBB and EAGG?
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 MBB own that EAGG doesn't?
10448 positions (58.1% of MBB) are unique to MBB, led by Ginnie Mae II Pool, Fannie Mae Pool and Fannie Mae Pool. In the other direction, 4514 positions (81.9% of EAGG) are unique to EAGG.