IWD vs VTTHX: 24% overlap
iShares Russell 1000 Value ETF and Vanguard Target Retirement 2035 share 24.0% 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 4 months apart — VTTHX as of 2026-03-31, 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 1.8. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IWD and VTTHX hold 846 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IWD | in VTTHX | Δ |
|---|---|---|---|
| AAPL | 5.9% | 2.3% | 3.6% |
| MSFT | 3.9% | 1.5% | 2.4% |
| AMZN | 5.7% | 1.2% | 4.5% |
| META | 0.7% | 0.7% | 0.0% |
| BRK-B | 2.5% | 0.5% | 2.0% |
| JPM | 2.6% | 0.4% | 2.1% |
| JNJ | 1.7% | 0.3% | 1.4% |
| XOM | 1.8% | 0.3% | 1.5% |
| INTC | 1.2% | 0.3% | 0.9% |
| WMT | 1.2% | 0.3% | 0.9% |
Where IWD and VTTHX 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 | IWD | VTTHX | Δ |
|---|---|---|---|
| Unclassified | 0.0% | 11.2% | −11.2pp |
| Treasuries | 0.0% | 11.2% | −11.2pp |
| Health Care | 12.7% | 5.2% | +7.5pp |
| Financials | 19.6% | 12.0% | +7.5pp |
| MBS Pass-Through | 0.0% | 4.7% | −4.7pp |
| Consumer Discretionary | 10.2% | 5.7% | +4.5pp |
| Consumer Staples | 7.4% | 3.0% | +4.4pp |
| Energy | 6.1% | 2.1% | +4.0pp |
Δ is IWD minus VTTHX, 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
0.4% of IWD by weight, held in no part of VTTHX.
73.7% of VTTHX by weight, held in no part of IWD.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IWD | VTTHX | |
|---|---|---|
| Top 10 holdings | 27.8% | 26.4% |
| Positions held | 872 | 6 |
| Cost per $10,000 held, per year | $19 | $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 IWD and VTTHX overlap?
IWD and VTTHX overlap 24.0% by portfolio weight — moderate overlap. They share 846 holdings. The figure comes from current issuer holdings files (IWD as of 2026-07-23, VTTHX as of 2026-03-31).
How is the overlap between IWD and VTTHX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IWD holds a stock at 6% and VTTHX 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 IWD and VTTHX?
That depends on your goals — we state facts, not advice. At 24.0% overlap, each fund still contributes meaningfully distinct exposure.
What does IWD own that VTTHX doesn't?
IWD holds 872 positions and VTTHX holds 6; 25 of IWD's positions don't appear in VTTHX at all, and they are 0.4% of IWD by weight.
You probably hold more than two funds
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Related comparisons
Sources: issuer holdings files, IWD as of 2026-07-23, VTTHX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.