MGK vs XLY: 11% overlap
Vanguard Mega Cap Growth ETF and Consumer Discretionary Select Sector SPDR Fund share 11.3% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
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
MGK and XLY hold 9 of the same securities. The ten contributing most to the overlap figure:
| Holding | in MGK | in XLY | Δ |
|---|---|---|---|
| AMZN | 4.4% | 23.5% | 19.0% |
| TSLA | 3.9% | 16.1% | 12.2% |
| TJX | 0.7% | 4.3% | 3.6% |
| BKNG | 0.6% | 3.6% | 3.0% |
| ORLY | 0.4% | 1.9% | 1.5% |
| MAR | 0.4% | 2.1% | 1.7% |
| ABNB | 0.4% | 1.5% | 1.2% |
| HLT | 0.3% | 2.0% | 1.7% |
| CASH | 0.5% | 0.1% | 0.4% |
Where MGK and XLY 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 | MGK | XLY | Δ |
|---|---|---|---|
| Consumer Discretionary | 11.2% | 99.9% | −88.7pp |
| Information Technology | 58.6% | 0.0% | +58.6pp |
| Communication Services | 16.2% | 0.0% | +16.2pp |
| Health Care | 4.9% | 0.0% | +4.9pp |
| Financials | 4.0% | 0.0% | +4.0pp |
| Industrials | 2.6% | 0.0% | +2.6pp |
| Real Estate | 1.2% | 0.0% | +1.2pp |
| Materials | 0.4% | 0.0% | +0.4pp |
Δ is MGK minus XLY, 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
88.3% of MGK by weight, held in no part of XLY.
44.9% of XLY by weight, held in no part of MGK.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| MGK | XLY | |
|---|---|---|
| Top 10 holdings | 63.5% | 68.0% |
| Positions held | 57 | 49 |
| Cost per $10,000 held, per year | $5 | $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 MGK and XLY overlap?
MGK and XLY overlap 11.3% by portfolio weight — largely distinct portfolios. They share 9 holdings. The figure comes from current issuer holdings files (MGK as of 2026-06-30, XLY as of 2026-07-23).
How is the overlap between MGK and XLY calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If MGK holds a stock at 6% and XLY 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 MGK and XLY?
That depends on your goals — we state facts, not advice. At 11.3% overlap, each fund still contributes meaningfully distinct exposure.
What does MGK own that XLY doesn't?
MGK holds 57 positions and XLY holds 49; 48 of MGK's positions don't appear in XLY at all, and they are 88.3% of MGK by weight.
You probably hold more than two funds
This page compares MGK and XLY. Paste your whole portfolio — brokerage, 401(k), IRA — and see the overlap across every fund at once, plus what you actually own underneath them and your own Effective Funds number. Free, no account, nothing stored.
X-ray my portfolio — free →Watch MGK vs XLY
We re-read both funds’ published holdings every weeknight. Leave an address and we'll tell you when what's inside actually changes.
Not sending yet — email alerts are built but switched off, and you'll be among the first when they turn on. No spam, one-click unsubscribe.
Related comparisons
Sources: issuer holdings files, MGK as of 2026-06-30, XLY as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.