IUSB vs BKAG: Holdings Overlap
IUSBiShares Core Universal USD Bond ETF
iShares · 17783 holdings · $43.2B · as of 2026-04-30
BNY Mellon · 5070 holdings · $2.2B · as of 2026-04-30
How similar are IUSB and BKAG?
iShares Core Universal USD Bond ETF (IUSB, by iShares) holds 17783 positions; BNY Mellon Core Bond ETF (BKAG, by BNY Mellon) holds 5070. They have 3637 holdings in common, and by portfolio weight the two funds are 44.4% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 44.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 3637IUSB holds 17783 · BKAG holds 5070
- Weight in Shared Holdings
- IUSB 54%·BKAG 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 IUSB
14146 of 17783 positions (44.5% of the fund) are not held by BKAG. Showing the top 30 by weight.
- Uniform Mortgage-Backed Securities0.32%
- Government National Mortgage Association0.21%
- U.S. Treasury Notes0.19%
- Uniform Mortgage-Backed Securities0.19%
- Uniform Mortgage-Backed Securities0.13%
- Uniform Mortgage-Backed Securities0.11%
Only in BKAG
1433 of 5070 positions (21.1% of the fund) are not held by IUSB. Showing the top 30 by weight.
- U.S. Treasury Notes0.33%
- Fannie Mae Pool0.28%
- U.S. Treasury Notes0.22%
- U.S. Treasury Notes0.20%
- U.S. Treasury Notes0.18%
- FN FS51730.17%
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% |
| BKAG | -0.6% | -0.3% | +2.1% | +4.1% | -0.3% | — | 3.94% |
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 BKAG →
Shared Holdings(3637)
The top 10 shared positions account for 8% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 0.37% | 0.56% | 0.37% |
|---|---|---|---|
| U.S. Treasury Notes | 0.37% | 0.44% | 0.37% |
| U.S. Treasury Notes | 0.37% | 0.38% | 0.37% |
| U.S. Treasury Notes | 0.37% | 0.40% | 0.37% |
| U.S. Treasury Notes | 0.36% | 0.47% | 0.36% |
| U.S. Treasury Notes | 0.35% | 0.43% | 0.35% |
| U.S. Treasury Notes | 0.33% | 0.34% | 0.33% |
| U.S. Treasury Notes | 0.32% | 0.40% | 0.32% |
| U.S. Treasury Notes | 0.33% | 0.31% | 0.31% |
| U.S. Treasury Notes | 0.36% | 0.29% | 0.29% |
| U.S. Treasury Notes/Bonds | 0.29% | 0.60% | 0.29% |
| U.S. Treasury Notes | 0.28% | 0.28% | 0.28% |
| U.S. Treasury Notes | 0.34% | 0.28% | 0.28% |
| U.S. Treasury Notes | 0.34% | 0.27% | 0.27% |
| U.S. Treasury Notes | 0.29% | 0.27% | 0.27% |
| U.S. Treasury Notes | 0.27% | 0.35% | 0.27% |
| U.S. Treasury Notes | 0.26% | 0.29% | 0.26% |
| U.S. Treasury Notes | 0.26% | 0.29% | 0.26% |
| U.S. Treasury Notes | 0.25% | 0.26% | 0.25% |
| U.S. Treasury Notes | 0.25% | 0.25% | 0.25% |
| U.S. Treasury Notes | 0.25% | 0.39% | 0.25% |
| U.S. Treasury Notes | 0.27% | 0.24% | 0.24% |
| U.S. Treasury Notes | 0.26% | 0.23% | 0.23% |
| U.S. Treasury Notes | 0.26% | 0.23% | 0.23% |
| U.S. Treasury Notes | 0.30% | 0.22% | 0.22% |
Showing the top 250 of 3637 shared holdings by overlap weight.
Frequently Asked Questions
How much do IUSB and BKAG overlap?
IUSB and BKAG overlap by 44.4% of portfolio weight. They share 3637 holdings (IUSB holds 17783 positions and BKAG holds 5070), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IUSB and BKAG?
The two portfolios are 44.4% 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 BKAG?
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 8% of the total overlap.
What does IUSB own that BKAG doesn't?
14146 positions (44.5% of IUSB) are unique to IUSB, led by Uniform Mortgage-Backed Securities, Government National Mortgage Association and U.S. Treasury Notes. In the other direction, 1433 positions (21.1% of BKAG) are unique to BKAG.