IEMG vs RGAGX: 4% overlap
iShares Core MSCI Emerging Markets ETF and American Funds Growth Fund of America R6 share 3.7% 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
IEMG and RGAGX hold 14 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IEMG | in RGAGX | Δ |
|---|---|---|---|
| 2330 | 13.4% | 2.3% | 11.1% |
| 000660 | 5.3% | 0.8% | 4.5% |
| 005930 | 6.3% | 0.2% | 6.1% |
| NU | 0.4% | 0.1% | 0.3% |
| SCCO | 0.1% | 0.1% | 0.0% |
| HAL | 0.1% | 0.3% | 0.3% |
| DMART | 0.0% | 0.1% | 0.0% |
| TEL | 0.0% | 0.0% | 0.0% |
| 6098 | 0.0% | 0.2% | 0.2% |
| MRP | 0.0% | 0.0% | 0.0% |
Where IEMG 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 | IEMG | RGAGX | Δ |
|---|---|---|---|
| Financials | 18.1% | 6.5% | +11.6pp |
| Information Technology | 39.8% | 30.6% | +9.2pp |
| Health Care | 3.1% | 11.0% | −7.8pp |
| Communication Services | 5.4% | 13.2% | −7.8pp |
| Unclassified | 0.0% | 7.6% | −7.6pp |
| Materials | 5.8% | 1.5% | +4.2pp |
| Consumer Discretionary | 8.5% | 12.7% | −4.2pp |
| Industrials | 7.7% | 9.8% | −2.1pp |
Δ is IEMG 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
73.6% of IEMG by weight, held in no part of RGAGX.
94.4% of RGAGX by weight, held in no part of IEMG.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IEMG | RGAGX | |
|---|---|---|
| Top 10 holdings | 33.6% | 36.7% |
| Positions held | 2,790 | 309 |
| Cost per $10,000 held, per year | $9 | $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 IEMG and RGAGX overlap?
IEMG and RGAGX overlap 3.7% by portfolio weight — largely distinct portfolios. They share 14 holdings. The figure comes from current issuer holdings files (IEMG as of 2026-07-23, RGAGX as of 2026-02-28).
How is the overlap between IEMG and RGAGX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IEMG 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 IEMG and RGAGX?
That depends on your goals — we state facts, not advice. At 3.7% overlap, each fund still contributes meaningfully distinct exposure.
What does IEMG own that RGAGX doesn't?
IEMG holds 2,790 positions and RGAGX holds 309; 2,775 of IEMG's positions don't appear in RGAGX at all, and they are 73.6% of IEMG by weight.
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Related comparisons
Sources: issuer holdings files, IEMG as of 2026-07-23, RGAGX as of 2026-02-28. Weights are fractions of each fund. Diagnostics, not advice.