IVW vs XLRE: 1% overlap
iShares S&P 500 Growth ETF and Real Estate Select Sector SPDR Fund share 0.7% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
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
IVW and XLRE hold 4 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IVW | in XLRE | Δ |
|---|---|---|---|
| WELL | 0.5% | 11.7% | 11.2% |
| SPG | 0.1% | 4.9% | 4.8% |
| VTR | 0.1% | 4.8% | 4.8% |
| CASH | 0.1% | 0.0% | 0.1% |
Where IVW and XLRE 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 | IVW | XLRE | Δ |
|---|---|---|---|
| Real Estate | 0.7% | 99.9% | −99.3pp |
| Information Technology | 52.5% | 0.0% | +52.5pp |
| Communication Services | 14.7% | 0.0% | +14.7pp |
| Financials | 9.2% | 0.0% | +9.2pp |
| Consumer Discretionary | 8.0% | 0.0% | +8.0pp |
| Industrials | 6.6% | 0.0% | +6.6pp |
| Health Care | 6.3% | 0.0% | +6.3pp |
| Consumer Staples | 1.2% | 0.0% | +1.2pp |
Δ is IVW minus XLRE, 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
99.2% of IVW by weight, held in no part of XLRE.
78.5% of XLRE by weight, held in no part of IVW.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IVW | XLRE | |
|---|---|---|
| Top 10 holdings | 58.2% | 60.6% |
| Positions held | 149 | 34 |
| Cost per $10,000 held, per year | $18 | $8 |
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 IVW and XLRE overlap?
IVW and XLRE overlap 0.7% by portfolio weight — largely distinct portfolios. They share 4 holdings. The figure comes from current issuer holdings files (IVW as of 2026-07-23, XLRE as of 2026-07-23).
How is the overlap between IVW and XLRE calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IVW holds a stock at 6% and XLRE 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 IVW and XLRE?
That depends on your goals — we state facts, not advice. At 0.7% overlap, each fund still contributes meaningfully distinct exposure.
What does IVW own that XLRE doesn't?
IVW holds 149 positions and XLRE holds 34; 144 of IVW's positions don't appear in XLRE at all, and they are 99.2% of IVW by weight.
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Related comparisons
Sources: issuer holdings files, IVW as of 2026-07-23, XLRE as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.