IEFA vs VONG: 0% overlap
iShares Core MSCI EAFE ETF and Vanguard Russell 1000 Growth 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 27 days apart — VONG as of 2026-06-30, the rest through 2026-07-27. 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 VONG hold 20 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IEFA | in VONG | Δ |
|---|---|---|---|
| SPOT | 0.3% | 0.2% | 0.1% |
| HEI-A | 0.1% | 0.1% | 0.0% |
| HEI | 0.1% | 0.0% | 0.1% |
| CASH | 0.0% | 0.3% | 0.2% |
| AAL | 0.2% | 0.0% | 0.2% |
| ADP | 0.0% | 0.1% | 0.1% |
| AMP | 0.0% | 0.0% | 0.0% |
| EL | 0.2% | 0.0% | 0.2% |
| CAI | 0.0% | 0.0% | 0.0% |
| CSL | 0.2% | 0.0% | 0.2% |
Where IEFA and VONG 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 | VONG | Δ |
|---|---|---|---|
| Information Technology | 11.5% | 54.3% | −42.8pp |
| Financials | 24.5% | 4.3% | +20.3pp |
| Communication Services | 3.2% | 16.1% | −12.9pp |
| Industrials | 19.6% | 8.8% | +10.8pp |
| Materials | 6.3% | 0.3% | +6.0pp |
| Consumer Staples | 6.8% | 1.3% | +5.5pp |
| Utilities | 4.1% | 0.3% | +3.8pp |
| Energy | 3.8% | 0.4% | +3.3pp |
Δ is IEFA minus VONG, 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
98.4% of IEFA by weight, held in no part of VONG.
97.6% of VONG 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 | VONG | |
|---|---|---|
| Top 10 holdings | 12.3% | 54.3% |
| Positions held | 2,567 | 370 |
| Cost per $10,000 held, per year | $7 | $6 |
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 VONG overlap?
IEFA and VONG overlap 0.5% by portfolio weight — largely distinct portfolios. They share 20 holdings. The figure comes from current issuer holdings files (IEFA as of 2026-07-27, VONG as of 2026-06-30).
How is the overlap between IEFA and VONG 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 VONG 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 VONG?
That depends on your goals — we state facts, not advice. At 0.5% overlap, each fund still contributes meaningfully distinct exposure.
What does IEFA own that VONG doesn't?
IEFA holds 2,567 positions and VONG holds 370; 2,546 of IEFA's positions don't appear in VONG at all, and they are 98.4% of IEFA by weight.
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Related comparisons
Sources: issuer holdings files, IEFA as of 2026-07-27, VONG as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.