ANCFX vs IEMG: 4% overlap
American Funds Fundamental Investors A and iShares Core MSCI Emerging Markets ETF share 4.3% 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 4 months apart — ANCFX as of 2026-03-31, the rest through 2026-07-23. 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 IEMG hold 9 of the same securities. The ten contributing most to the overlap figure:
| Holding | in ANCFX | in IEMG | Δ |
|---|---|---|---|
| 2330 | 2.2% | 13.4% | 11.3% |
| 000660 | 1.7% | 5.3% | 3.6% |
| GMEXICOB | 0.7% | 0.3% | 0.5% |
| MTN | 0.1% | 0.2% | 0.1% |
| 2454 | 0.1% | 1.3% | 1.2% |
| RDOR3 | 0.1% | 0.0% | 0.0% |
| TRU | 0.1% | 0.0% | 0.0% |
| SAP | 0.1% | 0.0% | 0.1% |
| BAP | 0.0% | 0.2% | 0.2% |
Where ANCFX and IEMG 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 | IEMG | Δ |
|---|---|---|---|
| Information Technology | 27.8% | 39.8% | −12.0pp |
| Financials | 8.1% | 18.1% | −10.0pp |
| Unclassified | 9.3% | 0.0% | +9.3pp |
| Consumer Staples | 9.4% | 3.0% | +6.4pp |
| Industrials | 12.0% | 7.7% | +4.3pp |
| Materials | 2.2% | 5.8% | −3.6pp |
| Communication Services | 9.0% | 5.4% | +3.5pp |
| Health Care | 6.2% | 3.1% | +3.1pp |
Δ is ANCFX minus IEMG, 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
94.1% of ANCFX by weight, held in no part of IEMG.
78.6% of IEMG 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 | IEMG | |
|---|---|---|
| Top 10 holdings | 34.1% | 33.6% |
| Positions held | 233 | 2,790 |
| Cost per $10,000 held, per year | $61 | $9 |
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 IEMG overlap?
ANCFX and IEMG overlap 4.3% by portfolio weight — largely distinct portfolios. They share 9 holdings. The figure comes from current issuer holdings files (ANCFX as of 2026-03-31, IEMG as of 2026-07-23).
How is the overlap between ANCFX and IEMG 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 IEMG 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 IEMG?
That depends on your goals — we state facts, not advice. At 4.3% overlap, each fund still contributes meaningfully distinct exposure.
What does ANCFX own that IEMG doesn't?
ANCFX holds 233 positions and IEMG holds 2,790; 223 of ANCFX's positions don't appear in IEMG at all, and they are 94.1% of ANCFX by weight.
You probably hold more than two funds
This page compares ANCFX and IEMG. Paste your whole portfolio — brokerage, 401(k), IRA — and see the overlap across every fund at once, plus what you actually own underneath them and your own Effective Funds number. Free, no account, nothing stored.
X-ray my portfolio — free →Watch ANCFX vs IEMG
We re-read both funds’ published holdings every weeknight. Leave an address and we'll tell you when what's inside actually changes.
Not sending yet — email alerts are built but switched off, and you'll be among the first when they turn on. No spam, one-click unsubscribe.
Related comparisons
Sources: issuer holdings files, ANCFX as of 2026-03-31, IEMG as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.