BNDX vs VB: 2% overlap
Vanguard Total International Bond ETF and Vanguard Small-Cap ETF share 1.5% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
You would hold two tickers and get the diversification of 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
BNDX and VB hold 9 of the same securities. The ten contributing most to the overlap figure:
| Holding | in BNDX | in VB | Δ |
|---|---|---|---|
| CASH | 1.3% | 1.7% | 0.4% |
| KTB | 0.2% | 0.1% | 0.1% |
| Q | 0.0% | 0.2% | 0.2% |
| DT | 0.0% | 0.2% | 0.1% |
| SEB | 0.1% | 0.0% | 0.1% |
| VTRS | 0.0% | 0.2% | 0.2% |
| WPC | 0.0% | 0.2% | 0.2% |
| DXC | 0.0% | 0.0% | 0.0% |
| AGCO | 0.0% | 0.1% | 0.1% |
Where BNDX and VB differ
Sector weights as a share of each fund, ordered by the size of the gap rather than the size of the sector — two funds that overlap heavily still usually diverge somewhere.
| Sector | BNDX | VB | Δ |
|---|---|---|---|
| Unclassified | 88.4% | 0.6% | +87.9pp |
| Industrials | 0.0% | 21.0% | −21.0pp |
| Information Technology | 0.1% | 16.1% | −16.0pp |
| Health Care | 0.2% | 11.9% | −11.8pp |
| Financials | 2.0% | 12.7% | −10.7pp |
| Consumer Discretionary | 0.2% | 9.9% | −9.7pp |
| Real Estate | 0.0% | 7.1% | −7.1pp |
| Materials | 0.1% | 5.3% | −5.2pp |
Δ is BNDX minus VB, in percentage points. Sector data is not published by every issuer, so “Unclassified” is a real category rather than a gap in the table.
What each fund holds alone
98.3% of BNDX by weight, held in no part of VB.
97.3% of VB by weight, held in no part of BNDX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| BNDX | VB | |
|---|---|---|
| Top 10 holdings | 24.4% | 5.6% |
| Positions held | 3,115 | 1,308 |
| Cost per $10,000 held, per year | $7 | $3 |
Cost is the expense ratio applied to $10,000; it excludes any brokerage commission, bid-ask spread or tax consequence. Figures are facts about the funds, not a suggestion about which to hold.
Frequently asked
How much do BNDX and VB overlap?
BNDX and VB overlap 1.5% by portfolio weight — largely distinct portfolios. They share 9 holdings. The figure comes from current issuer holdings files (BNDX as of 2026-06-30, VB as of 2026-06-30).
How is the overlap between BNDX and VB calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If BNDX holds a stock at 6% and VB holds the same stock at 4%, 4% counts as shared. The result is bounded between 0% and 100%, and it is computed after looking through any fund-of-funds to the underlying holdings.
Is it redundant to hold both BNDX and VB?
That depends on your goals — we state facts, not advice. At 1.5% overlap, each fund still contributes meaningfully distinct exposure.
What does BNDX own that VB doesn't?
BNDX holds 3,115 positions and VB holds 1,308; 3,106 of BNDX's positions don't appear in VB at all, and they are 98.3% of BNDX by weight.
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Related comparisons
Sources: issuer holdings files, BNDX as of 2026-06-30, VB as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.