IJH vs IWD: 7% overlap
iShares Core S&P Mid-Cap ETF and iShares Russell 1000 Value ETF share 6.8% 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 1.9. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IJH and IWD hold 285 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IJH | in IWD | Δ |
|---|---|---|---|
| ILMN | 0.8% | 0.1% | 0.7% |
| CASH | 0.1% | 0.1% | 0.0% |
| TWLO | 0.8% | 0.1% | 0.7% |
| OKTA | 0.6% | 0.1% | 0.6% |
| UTHR | 0.6% | 0.1% | 0.6% |
| MKSI | 0.7% | 0.1% | 0.6% |
| USFD | 0.6% | 0.1% | 0.5% |
| RBA | 0.6% | 0.1% | 0.5% |
| RS | 0.6% | 0.1% | 0.5% |
| SNX | 0.5% | 0.1% | 0.5% |
Where IJH and IWD 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 | IJH | IWD | Δ |
|---|---|---|---|
| Industrials | 25.5% | 11.3% | +14.2pp |
| Financials | 15.1% | 19.6% | −4.4pp |
| Consumer Staples | 3.1% | 7.4% | −4.3pp |
| Information Technology | 13.9% | 18.0% | −4.1pp |
| Real Estate | 6.9% | 3.7% | +3.2pp |
| Health Care | 10.0% | 12.7% | −2.8pp |
| Materials | 5.5% | 3.7% | +1.8pp |
| Communication Services | 1.5% | 3.3% | −1.8pp |
Δ is IJH minus IWD, 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
24.5% of IJH by weight, held in no part of IWD.
93.1% of IWD by weight, held in no part of IJH.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IJH | IWD | |
|---|---|---|
| Top 10 holdings | 7.6% | 27.8% |
| Positions held | 404 | 872 |
| Cost per $10,000 held, per year | $5 | $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 IJH and IWD overlap?
IJH and IWD overlap 6.8% by portfolio weight — largely distinct portfolios. They share 285 holdings. The figure comes from current issuer holdings files (IJH as of 2026-07-23, IWD as of 2026-07-23).
How is the overlap between IJH and IWD calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IJH holds a stock at 6% and IWD 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 IJH and IWD?
That depends on your goals — we state facts, not advice. At 6.8% overlap, each fund still contributes meaningfully distinct exposure.
What does IJH own that IWD doesn't?
IJH holds 404 positions and IWD holds 872; 118 of IJH's positions don't appear in IWD at all, and they are 24.5% of IJH by weight.
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Related comparisons
Sources: issuer holdings files, IJH as of 2026-07-23, IWD as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.