IAGG vs BNDX: Holdings Overlap
IAGGiShares Core International Aggregate Bond ETF
iShares · 7836 holdings · $11.4B · as of 2026-04-30
BNDXVanguard Total International Bond Index Fund
Vanguard · 6707 holdings · $83.0B · as of 2026-04-30
How similar are IAGG and BNDX?
iShares Core International Aggregate Bond ETF (IAGG, by iShares) holds 7836 positions; Vanguard Total International Bond Index Fund (BNDX, by Vanguard) holds 6707. They have 4173 holdings in common, and by portfolio weight the two funds are 50.6% identical. In practical terms the pair is moderately overlapping; they share a meaningful core, but each fund adds distinct exposure.
- Overlap by Weight
- 50.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 4173IAGG holds 7836 · BNDX holds 6707
- Weight in Shared Holdings
- IAGG 73%·BNDX 83%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 IAGG
3663 of 7836 positions (27.5% of the fund) are not held by BNDX. Showing the top 30 by weight.
- China Government Bond0.70%
- China Development Bank0.52%
- China Government Bond0.49%
- China Government Bond0.43%
- Bundesobligation0.38%
- China Development Bank0.34%
Only in BNDX
2534 of 6707 positions (15.7% of the fund) are not held by IAGG. Showing the top 30 by weight.
- FRANCE O.A.T.0.18%
- BTPS0.14%
- BELGIAN GOVT0.11%
- BTPS0.11%
- Republic of Poland Government Bond0.11%
- NETHERLANDS GOVT0.10%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IAGG | +0.2% | +1.5% | +2.1% | +4.8% | +0.9% | +2.0% | 4.50% |
| BNDX | +0.1% | +0.8% | +1.4% | +4.3% | +0.1% | +1.6% | 4.54% |
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 IAGG vs BNDX →
Shared Holdings(4173)
The top 10 shared positions account for 4% of the overlap, led by Bundesobligation, U.K. Gilts and French Republic Government Bonds OAT.
| Bundesobligation | 0.35% | 0.24% | 0.24% |
|---|---|---|---|
| U.K. Gilts | 0.31% | 0.23% | 0.23% |
| French Republic Government Bonds OAT | 0.22% | 0.23% | 0.22% |
| French Republic Government Bond OAT | 0.22% | 0.28% | 0.22% |
| French Republic Government Bonds OAT | 0.20% | 0.23% | 0.20% |
| French Republic Government Bonds OAT | 0.20% | 0.24% | 0.20% |
| Bundesrepublik Deutschland Bundesanleihe | 0.19% | 0.20% | 0.19% |
| French Republic Government Bonds OAT | 0.19% | 0.23% | 0.19% |
| U.K. Gilts | 0.19% | 0.19% | 0.19% |
| French Republic Government Bonds OAT | 0.18% | 0.25% | 0.18% |
| French Republic Government Bonds OAT | 0.17% | 0.29% | 0.17% |
| French Republic Government Bonds OAT | 0.17% | 0.22% | 0.17% |
| French Republic Government Bonds OAT | 0.17% | 0.23% | 0.17% |
| U.K. Gilts | 0.16% | 0.37% | 0.16% |
| French Republic Government Bonds OAT | 0.25% | 0.16% | 0.16% |
| Japan Government Five Year Bonds | 0.17% | 0.16% | 0.16% |
| French Republic Government Bonds OAT | 0.16% | 0.16% | 0.16% |
| French Republic Government Bonds OAT | 0.16% | 0.18% | 0.16% |
| Italy Buoni Poliennali Del Tesoro | 0.19% | 0.15% | 0.15% |
| French Republic Government Bonds OAT | 0.15% | 0.39% | 0.15% |
| U.K. Gilts | 0.15% | 0.38% | 0.15% |
| French Republic Government Bonds OAT | 0.19% | 0.15% | 0.15% |
| U.K. Gilts | 0.14% | 0.17% | 0.14% |
| U.K. Gilts | 0.14% | 0.13% | 0.13% |
| Spain Government Bonds | 0.13% | 0.16% | 0.13% |
Showing the top 250 of 4173 shared holdings by overlap weight.
Frequently Asked Questions
How much do IAGG and BNDX overlap?
IAGG and BNDX overlap by 50.6% of portfolio weight. They share 4173 holdings (IAGG holds 7836 positions and BNDX holds 6707), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IAGG and BNDX?
The two portfolios are 50.6% 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 IAGG and BNDX?
The largest positions held by both funds are Bundesobligation, U.K. Gilts, French Republic Government Bonds OAT, French Republic Government Bond OAT and French Republic Government Bonds OAT. Together the top 10 shared positions account for 4% of the total overlap.
What does IAGG own that BNDX doesn't?
3663 positions (27.5% of IAGG) are unique to IAGG, led by China Government Bond, China Development Bank and China Government Bond. In the other direction, 2534 positions (15.7% of BNDX) are unique to BNDX.