VFIFX vs XLK: 18% overlap
Vanguard Target Retirement 2050 and Technology Select Sector SPDR Fund share 17.6% 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 — VFIFX 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
VFIFX and XLK hold 74 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VFIFX | in XLK | Δ |
|---|---|---|---|
| NVDA | 3.3% | 14.1% | 10.8% |
| AAPL | 3.1% | 13.2% | 10.1% |
| MSFT | 2.0% | 7.9% | 5.9% |
| AVGO | 1.3% | 5.2% | 3.9% |
| MU | 0.9% | 4.3% | 3.4% |
| AMD | 0.7% | 4.7% | 4.0% |
| AMAT | 0.4% | 3.0% | 2.6% |
| INTC | 0.4% | 3.2% | 2.8% |
| LRCX | 0.4% | 2.7% | 2.3% |
| CSCO | 0.3% | 3.0% | 2.7% |
Where VFIFX 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 | VFIFX | XLK | Δ |
|---|---|---|---|
| Information Technology | 26.1% | 99.9% | −73.9pp |
| Financials | 14.1% | 0.0% | +14.1pp |
| Industrials | 10.5% | 0.0% | +10.5pp |
| Consumer Discretionary | 7.5% | 0.0% | +7.5pp |
| Health Care | 6.9% | 0.0% | +6.9pp |
| Unclassified | 6.3% | 0.0% | +6.3pp |
| Communication Services | 5.9% | 0.0% | +5.9pp |
| Consumer Staples | 4.0% | 0.0% | +4.0pp |
Δ is VFIFX 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
80.5% of VFIFX by weight, held in no part of XLK.
0.5% of XLK by weight, held in no part of VFIFX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VFIFX | XLK | |
|---|---|---|
| Top 10 holdings | 19.3% | 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 VFIFX and XLK overlap?
VFIFX and XLK overlap 17.6% by portfolio weight — moderate overlap. They share 74 holdings. The figure comes from current issuer holdings files (VFIFX as of 2026-03-31, XLK as of 2026-07-23).
How is the overlap between VFIFX and XLK calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VFIFX 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 VFIFX and XLK?
That depends on your goals — we state facts, not advice. At 17.6% overlap, each fund still contributes meaningfully distinct exposure.
What does VFIFX own that XLK doesn't?
VFIFX holds 6 positions and XLK holds 76; 16,608 of VFIFX's positions don't appear in XLK at all, and they are 80.5% of VFIFX by weight.
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Related comparisons
Sources: issuer holdings files, VFIFX as of 2026-03-31, XLK as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.