IUSB vs BND overlap
IUSB and BND overlap 57.4% by weight, across 9,105 shared holdings.
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Top shared holdings
| Holding | IUSB | BND | Overlap |
|---|---|---|---|
| US Treasury N/B | 0.36% | 0.40% | 0.36% |
| US Treasury N/B | 0.35% | 0.41% | 0.35% |
| US Treasury N/BT | 0.34% | 0.39% | 0.34% |
| US Treasury N/B | 0.34% | 0.41% | 0.34% |
| US Treasury N/B | 0.34% | 0.41% | 0.34% |
| US Treasury N/BT | 0.33% | 0.36% | 0.33% |
| US Treasury N/BT | 0.33% | 0.41% | 0.33% |
| US Treasury N/B | 0.33% | 0.41% | 0.33% |
| US Treasury N/BT | 0.33% | 0.32% | 0.32% |
| US Treasury N/B | 0.31% | 0.34% | 0.31% |
| US Treasury N/BT | 0.30% | 0.33% | 0.30% |
| US Treasury N/B | 0.32% | 0.29% | 0.29% |
| US Treasury N/B | 0.29% | 0.34% | 0.29% |
| US Treasury N/B | 0.29% | 0.39% | 0.29% |
| US Treasury N/B | 0.27% | 0.36% | 0.27% |
Overlap by weight adds up the smaller weight of each holding the funds share, so 100% means identical portfolios. Long securities only: derivatives and cash vehicles are left out. Sources: IUSB, SEC Form N-PORT, July 31, 2026; BND, SEC Form N-PORT, June 30, 2026.
Largest institutions holding both
| Firm | IUSB | BND |
|---|---|---|
| JPMorgan Chase & Co | $1.0B | $11.5B |
| Northwestern Mutual Wealth Management Co | $1.5B | $10.4B |
| Morgan Stanley | $1.4B | $9.2B |
| Envestnet Asset Management Inc. | $8.3B | $1.8B |
| Creative Planning | $22.7M | $9.6B |
| Vanguard Advisers Inc. | $46K | $4.6B |
| Wells Fargo & Company | $2.3B | $2.1B |
| BlackRock, Inc. | $3.8B | $611.2M |
| Jones Financial Companies LLLP | $4.1B | $339.8M |
| LPL Financial LLC | $2.9B | $1.5B |
| Savant Capital, LLC | $678K | $2.6B |
| Bank of America Corp. | $211.6M | $2.0B |
| Allworth Financial LP | $93.5M | $1.4B |
| SEI Investments Co | $232K | $1.5B |
| Ameriprise Financial Inc. | $601.3M | $702.0M |
This compares who owns the funds, not what the funds hold. From SEC Form 13F, for managers with $100M+ in US securities.
Who owns them: IUSB institutional holders, BND institutional holders.
Frequently asked questions
How much do IUSB and BND overlap?
57.4% by weight, with 9,105 holdings in common, using holdings for IUSB as of July 31, 2026 and BND as of June 30, 2026. The largest shared position is US TREASURY N/B.
Do institutions hold both IUSB and BND?
561 Form 13F filers report positions in both, out of 2,121 that report either one.
How is overlap by weight worked out?
For each holding the two funds share, take the smaller of the two weights, then add those up. Identical portfolios score 100%.