IVV vs IWF: 57% overlap
iShares Core S&P 500 ETF and iShares Russell 1000 Growth ETF share 56.9% 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 1.4. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IVV and IWF hold 178 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IVV | in IWF | Δ |
|---|---|---|---|
| NVDA | 7.9% | 15.1% | 7.2% |
| AAPL | 7.4% | 7.8% | 0.4% |
| MSFT | 4.4% | 4.4% | 0.0% |
| GOOGL | 2.9% | 5.7% | 2.8% |
| AVGO | 2.9% | 5.7% | 2.8% |
| GOOG | 2.4% | 4.7% | 2.3% |
| META | 2.1% | 3.4% | 1.3% |
| MU | 1.8% | 3.5% | 1.7% |
| LLY | 1.5% | 2.9% | 1.5% |
| TSLA | 1.4% | 2.9% | 1.5% |
Where IVV and IWF 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 | IVV | IWF | Δ |
|---|---|---|---|
| Information Technology | 37.5% | 55.0% | −17.5pp |
| Financials | 12.3% | 4.7% | +7.6pp |
| Communication Services | 9.3% | 15.7% | −6.4pp |
| Health Care | 9.1% | 5.6% | +3.5pp |
| Consumer Staples | 4.6% | 1.3% | +3.3pp |
| Energy | 3.4% | 0.5% | +2.9pp |
| Utilities | 2.3% | 0.3% | +1.9pp |
| Materials | 1.8% | 0.3% | +1.6pp |
Δ is IVV minus IWF, 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
33.6% of IVV by weight, held in no part of IWF.
6.1% of IWF by weight, held in no part of IVV.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IVV | IWF | |
|---|---|---|
| Top 10 holdings | 36.8% | 56.1% |
| Positions held | 506 | 370 |
| Cost per $10,000 held, per year | $3 | $19 |
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 IVV and IWF overlap?
IVV and IWF overlap 56.9% by portfolio weight — substantial duplication if you hold both. They share 178 holdings. The figure comes from current issuer holdings files (IVV as of 2026-07-23, IWF as of 2026-07-23).
How is the overlap between IVV and IWF calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IVV holds a stock at 6% and IWF 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 IVV and IWF?
That depends on your goals — we state facts, not advice. At 56.9% overlap, each fund still contributes meaningfully distinct exposure.
What does IVV own that IWF doesn't?
IVV holds 506 positions and IWF holds 370; 327 of IVV's positions don't appear in IWF at all, and they are 33.6% of IVV by weight.
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Related comparisons
Sources: issuer holdings files, IVV as of 2026-07-23, IWF as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.