VONG vs XLK: 52% overlap
Vanguard Russell 1000 Growth ETF and Technology Select Sector SPDR Fund share 52.0% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published 27 days apart — VONG as of 2026-06-30, the rest through 2026-07-27. 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 1.5. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VONG and XLK hold 49 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VONG | in XLK | Δ |
|---|---|---|---|
| NVDA | 13.8% | 13.6% | 0.2% |
| AAPL | 6.7% | 14.1% | 7.4% |
| AVGO | 5.2% | 5.2% | 0.0% |
| MSFT | 4.1% | 8.3% | 4.1% |
| MU | 3.9% | 4.0% | 0.1% |
| AMD | 2.8% | 4.4% | 1.6% |
| AMAT | 1.7% | 2.9% | 1.2% |
| LRCX | 1.6% | 2.5% | 0.9% |
| KLAC | 1.2% | 1.9% | 0.7% |
| SNDK | 1.0% | 1.3% | 0.3% |
Where VONG 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 | VONG | XLK | Δ |
|---|---|---|---|
| Information Technology | 54.3% | 99.9% | −45.7pp |
| Communication Services | 16.1% | 0.0% | +16.1pp |
| Industrials | 8.8% | 0.0% | +8.8pp |
| Consumer Discretionary | 8.2% | 0.0% | +8.2pp |
| Health Care | 5.4% | 0.0% | +5.4pp |
| Financials | 4.3% | 0.0% | +4.3pp |
| Consumer Staples | 1.3% | 0.0% | +1.3pp |
| Energy | 0.4% | 0.0% | +0.4pp |
Δ is VONG 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
47.5% of VONG by weight, held in no part of XLK.
15.9% of XLK by weight, held in no part of VONG.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VONG | XLK | |
|---|---|---|
| Top 10 holdings | 54.3% | 61.1% |
| Positions held | 370 | 76 |
| Cost per $10,000 held, per year | $6 | $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 VONG and XLK overlap?
VONG and XLK overlap 52.0% by portfolio weight — substantial duplication if you hold both. They share 49 holdings. The figure comes from current issuer holdings files (VONG as of 2026-06-30, XLK as of 2026-07-27).
How is the overlap between VONG and XLK calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VONG 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 VONG and XLK?
That depends on your goals — we state facts, not advice. At 52.0% overlap, each fund still contributes meaningfully distinct exposure.
What does VONG own that XLK doesn't?
VONG holds 370 positions and XLK holds 76; 321 of VONG's positions don't appear in XLK at all, and they are 47.5% of VONG by weight.
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Related comparisons
Sources: issuer holdings files, VONG as of 2026-06-30, XLK as of 2026-07-27. Weights are fractions of each fund. Diagnostics, not advice.