RGAGX vs XLK: 23% overlap
American Funds Growth Fund of America R6 and Technology Select Sector SPDR Fund share 23.4% 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 5 months apart — RGAGX as of 2026-02-28, 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
RGAGX and XLK hold 33 of the same securities. The ten contributing most to the overlap figure:
| Holding | in RGAGX | in XLK | Δ |
|---|---|---|---|
| NVDA | 6.1% | 14.1% | 8.0% |
| AVGO | 4.3% | 5.2% | 0.9% |
| MSFT | 4.0% | 7.9% | 3.9% |
| AAPL | 1.8% | 13.2% | 11.3% |
| MU | 1.8% | 4.3% | 2.5% |
| AMAT | 0.8% | 3.0% | 2.2% |
| APH | 0.7% | 1.3% | 0.6% |
| KLAC | 0.5% | 1.9% | 1.4% |
| ORCL | 0.5% | 1.4% | 0.9% |
| INTC | 0.5% | 3.2% | 2.7% |
Where RGAGX 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 | RGAGX | XLK | Δ |
|---|---|---|---|
| Information Technology | 30.6% | 99.9% | −69.4pp |
| Communication Services | 13.2% | 0.0% | +13.2pp |
| Consumer Discretionary | 12.7% | 0.0% | +12.7pp |
| Health Care | 11.0% | 0.0% | +11.0pp |
| Industrials | 9.8% | 0.0% | +9.8pp |
| Unclassified | 7.6% | 0.0% | +7.6pp |
| Financials | 6.5% | 0.0% | +6.5pp |
| Consumer Staples | 2.4% | 0.0% | +2.4pp |
Δ is RGAGX 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
75.5% of RGAGX by weight, held in no part of XLK.
20.5% of XLK by weight, held in no part of RGAGX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| RGAGX | XLK | |
|---|---|---|
| Top 10 holdings | 36.7% | 61.3% |
| Positions held | 309 | 76 |
| Cost per $10,000 held, per year | $30 | $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 RGAGX and XLK overlap?
RGAGX and XLK overlap 23.4% by portfolio weight — moderate overlap. They share 33 holdings. The figure comes from current issuer holdings files (RGAGX as of 2026-02-28, XLK as of 2026-07-23).
How is the overlap between RGAGX and XLK calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If RGAGX 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 RGAGX and XLK?
That depends on your goals — we state facts, not advice. At 23.4% overlap, each fund still contributes meaningfully distinct exposure.
What does RGAGX own that XLK doesn't?
RGAGX holds 309 positions and XLK holds 76; 275 of RGAGX's positions don't appear in XLK at all, and they are 75.5% of RGAGX by weight.
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Related comparisons
Sources: issuer holdings files, RGAGX as of 2026-02-28, XLK as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.