VTTHX vs XLK: 13% overlap
Vanguard Target Retirement 2035 and Technology Select Sector SPDR Fund share 13.2% 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 1.9. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VTTHX and XLK hold 74 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VTTHX | in XLK | Δ |
|---|---|---|---|
| NVDA | 2.5% | 14.1% | 11.6% |
| AAPL | 2.3% | 13.2% | 10.9% |
| MSFT | 1.5% | 7.9% | 6.4% |
| AVGO | 1.0% | 5.2% | 4.2% |
| MU | 0.7% | 4.3% | 3.6% |
| AMD | 0.5% | 4.7% | 4.2% |
| AMAT | 0.3% | 3.0% | 2.7% |
| INTC | 0.3% | 3.2% | 2.9% |
| LRCX | 0.3% | 2.7% | 2.4% |
| CSCO | 0.2% | 3.0% | 2.8% |
Where VTTHX and XLK 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 | VTTHX | XLK | Δ |
|---|---|---|---|
| Information Technology | 19.5% | 99.9% | −80.4pp |
| Financials | 12.0% | 0.0% | +12.0pp |
| Unclassified | 11.2% | 0.0% | +11.2pp |
| Treasuries | 11.2% | 0.0% | +11.2pp |
| Industrials | 7.8% | 0.0% | +7.8pp |
| Consumer Discretionary | 5.7% | 0.0% | +5.7pp |
| Health Care | 5.2% | 0.0% | +5.2pp |
| MBS Pass-Through | 4.7% | 0.0% | +4.7pp |
Δ is VTTHX minus XLK, 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
84.9% of VTTHX by weight, held in no part of XLK.
0.5% of XLK by weight, held in no part of VTTHX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VTTHX | XLK | |
|---|---|---|
| Top 10 holdings | 26.4% | 61.3% |
| Positions held | 6 | 76 |
| Cost per $10,000 held, per year | $8 | $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 VTTHX and XLK overlap?
VTTHX and XLK overlap 13.2% by portfolio weight — largely distinct portfolios. They share 74 holdings. The figure comes from current issuer holdings files (VTTHX as of 2026-03-31, XLK as of 2026-07-23).
How is the overlap between VTTHX and XLK calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VTTHX holds a stock at 6% and XLK 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 VTTHX and XLK?
That depends on your goals — we state facts, not advice. At 13.2% overlap, each fund still contributes meaningfully distinct exposure.
What does VTTHX own that XLK doesn't?
VTTHX holds 6 positions and XLK holds 76; 16,608 of VTTHX's positions don't appear in XLK at all, and they are 84.9% of VTTHX by weight.
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Related comparisons
Sources: issuer holdings files, VTTHX as of 2026-03-31, XLK as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.