ANCFX vs BNDX: 0% overlap
American Funds Fundamental Investors A and Vanguard Total International Bond ETF share 0.5% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published about 3 months apart — ANCFX as of 2026-03-31, the rest through 2026-06-30. Each fund is compared using its most recent file, so any trading in between shows up as a difference.
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
ANCFX and BNDX hold 27 of the same securities. The ten contributing most to the overlap figure:
| Holding | in ANCFX | in BNDX | Δ |
|---|---|---|---|
| BAC | 0.2% | 0.1% | 0.1% |
| MS | 0.1% | 0.1% | 0.0% |
| JPM | 0.5% | 0.1% | 0.5% |
| GS | 0.1% | 0.0% | 0.1% |
| DLR | 0.2% | 0.0% | 0.2% |
| LIN | 0.2% | 0.0% | 0.2% |
| MDLZ | 0.3% | 0.0% | 0.3% |
| NFLX | 0.1% | 0.0% | 0.1% |
| TMO | 0.4% | 0.0% | 0.4% |
| WFC | 0.2% | 0.0% | 0.2% |
Where ANCFX and BNDX 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 | ANCFX | BNDX | Δ |
|---|---|---|---|
| Unclassified | 9.3% | 88.4% | −79.1pp |
| Information Technology | 27.8% | 0.1% | +27.7pp |
| Industrials | 12.0% | 0.0% | +12.0pp |
| Consumer Staples | 9.4% | 0.1% | +9.3pp |
| Communication Services | 9.0% | 0.1% | +8.8pp |
| Consumer Discretionary | 8.9% | 0.2% | +8.7pp |
| Financials | 8.1% | 2.0% | +6.1pp |
| Health Care | 6.2% | 0.2% | +6.1pp |
Δ is ANCFX minus BNDX, 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
86.2% of ANCFX by weight, held in no part of BNDX.
99.5% of BNDX by weight, held in no part of ANCFX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| ANCFX | BNDX | |
|---|---|---|
| Top 10 holdings | 34.1% | 24.4% |
| Positions held | 233 | 3,115 |
| Cost per $10,000 held, per year | $61 | $7 |
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 ANCFX and BNDX overlap?
ANCFX and BNDX overlap 0.5% by portfolio weight — largely distinct portfolios. They share 27 holdings. The figure comes from current issuer holdings files (ANCFX as of 2026-03-31, BNDX as of 2026-06-30).
How is the overlap between ANCFX and BNDX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If ANCFX holds a stock at 6% and BNDX 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 ANCFX and BNDX?
That depends on your goals — we state facts, not advice. At 0.5% overlap, each fund still contributes meaningfully distinct exposure.
What does ANCFX own that BNDX doesn't?
ANCFX holds 233 positions and BNDX holds 3,115; 205 of ANCFX's positions don't appear in BNDX at all, and they are 86.2% of ANCFX by weight.
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Related comparisons
Sources: issuer holdings files, ANCFX as of 2026-03-31, BNDX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.