VGT vs VTTSX: 19% overlap
Vanguard Information Technology ETF and Vanguard Target Retirement 2060 share 19.1% 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 3 months apart — VTTSX as of 2026-03-31, the rest through 2026-06-30. 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
VGT and VTTSX hold 317 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VGT | in VTTSX | Δ |
|---|---|---|---|
| NVDA | 16.1% | 3.3% | 12.8% |
| AAPL | 14.3% | 3.1% | 11.3% |
| MSFT | 8.3% | 2.0% | 6.3% |
| AVGO | 3.8% | 1.3% | 2.6% |
| MU | 5.0% | 0.9% | 4.1% |
| AMD | 3.6% | 0.7% | 3.0% |
| AMAT | 2.3% | 0.4% | 1.8% |
| INTC | 2.4% | 0.4% | 2.0% |
| CASH | 0.4% | 2.0% | 1.6% |
| LRCX | 2.1% | 0.4% | 1.8% |
Where VGT and VTTSX 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 | VGT | VTTSX | Δ |
|---|---|---|---|
| Information Technology | 99.5% | 26.3% | +73.2pp |
| Financials | 0.0% | 14.1% | −14.1pp |
| Industrials | 0.0% | 10.6% | −10.6pp |
| Consumer Discretionary | 0.0% | 7.6% | −7.6pp |
| Health Care | 0.0% | 7.0% | −7.0pp |
| Unclassified | 0.0% | 6.1% | −6.1pp |
| Communication Services | 0.0% | 6.0% | −6.0pp |
| Consumer Staples | 0.1% | 4.1% | −4.0pp |
Δ is VGT minus VTTSX, 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
0.5% of VGT by weight, held in no part of VTTSX.
79.2% of VTTSX by weight, held in no part of VGT.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VGT | VTTSX | |
|---|---|---|
| Top 10 holdings | 59.9% | 19.3% |
| Positions held | 322 | 6 |
| Cost per $10,000 held, per year | $9 | $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 VGT and VTTSX overlap?
VGT and VTTSX overlap 19.1% by portfolio weight — moderate overlap. They share 317 holdings. The figure comes from current issuer holdings files (VGT as of 2026-06-30, VTTSX as of 2026-03-31).
How is the overlap between VGT and VTTSX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VGT holds a stock at 6% and VTTSX 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 VGT and VTTSX?
That depends on your goals — we state facts, not advice. At 19.1% overlap, each fund still contributes meaningfully distinct exposure.
What does VGT own that VTTSX doesn't?
VGT holds 322 positions and VTTSX holds 6; 5 of VGT's positions don't appear in VTTSX at all, and they are 0.5% of VGT by weight.
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Related comparisons
Sources: issuer holdings files, VGT as of 2026-06-30, VTTSX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.