IEFA vs RGAGX: 3% overlap
iShares Core MSCI EAFE ETF and American Funds Growth Fund of America R6 share 3.4% 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 5 months apart — RGAGX as of 2026-02-28, 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
IEFA and RGAGX hold 31 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IEFA | in RGAGX | Δ |
|---|---|---|---|
| ASML | 2.8% | 0.8% | 2.0% |
| RR- | 0.6% | 0.3% | 0.3% |
| SAP | 0.6% | 0.3% | 0.3% |
| 9984 | 0.5% | 0.2% | 0.3% |
| RMS | 0.2% | 0.2% | 0.0% |
| 6098 | 0.4% | 0.2% | 0.2% |
| BN | 0.2% | 0.2% | 0.0% |
| TSCO | 0.2% | 0.2% | 0.0% |
| SAF | 0.5% | 0.1% | 0.4% |
| AIR | 0.5% | 0.1% | 0.4% |
Where IEFA and RGAGX 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 | IEFA | RGAGX | Δ |
|---|---|---|---|
| Information Technology | 11.9% | 30.6% | −18.7pp |
| Financials | 24.2% | 6.5% | +17.7pp |
| Communication Services | 3.2% | 13.2% | −10.0pp |
| Industrials | 19.6% | 9.8% | +9.8pp |
| Unclassified | 0.0% | 7.6% | −7.6pp |
| Materials | 6.4% | 1.5% | +4.8pp |
| Consumer Staples | 6.7% | 2.4% | +4.3pp |
| Consumer Discretionary | 8.8% | 12.7% | −3.9pp |
Δ is IEFA minus RGAGX, 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
90.0% of IEFA by weight, held in no part of RGAGX.
94.2% of RGAGX by weight, held in no part of IEFA.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IEFA | RGAGX | |
|---|---|---|
| Top 10 holdings | 12.5% | 36.7% |
| Positions held | 2,567 | 309 |
| Cost per $10,000 held, per year | $7 | $30 |
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 IEFA and RGAGX overlap?
IEFA and RGAGX overlap 3.4% by portfolio weight — largely distinct portfolios. They share 31 holdings. The figure comes from current issuer holdings files (IEFA as of 2026-07-23, RGAGX as of 2026-02-28).
How is the overlap between IEFA and RGAGX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IEFA holds a stock at 6% and RGAGX 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 IEFA and RGAGX?
That depends on your goals — we state facts, not advice. At 3.4% overlap, each fund still contributes meaningfully distinct exposure.
What does IEFA own that RGAGX doesn't?
IEFA holds 2,567 positions and RGAGX holds 309; 2,535 of IEFA's positions don't appear in RGAGX at all, and they are 90.0% of IEFA by weight.
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Related comparisons
Sources: issuer holdings files, IEFA as of 2026-07-23, RGAGX as of 2026-02-28. Weights are fractions of each fund. Diagnostics, not advice.