QQQ vs XLK
NASDAQ 100 (QQQ) vs Technology Select Sector (XLK) — They look similar, but aren't
Understanding QQQ and XLK
QQQ (Invesco QQQ Trust) tracks the NASDAQ-100 Index, which includes the 100 largest non-financial companies listed on the NASDAQ exchange. While heavily tech-weighted, QQQ also includes consumer companies (Amazon, PepsiCo, Costco) and healthcare (Amgen, Gilead) that happen to be listed on NASDAQ. Selection is based on exchange listing, not sector classification.
XLK (Technology Select Sector SPDR Fund) tracks the S&P 500 Technology sector — companies classified as "Information Technology" under GICS standards. With ~65 holdings and an expense ratio of 0.08%, XLK is a pure tech sector play. It includes Apple and Microsoft but excludes Amazon (classified as Consumer Discretionary) and Meta/Google (classified as Communication Services).
The subtle but crucial difference: QQQ selects by NASDAQ exchange listing, XLK selects by GICS sector classification. This means QQQ includes Amazon, Meta, Google, and Netflix (which XLK doesn't), while XLK is more concentrated in pure tech companies. Over 10 years, QQQ returned +482.59% vs XLK's +586.97% — the difference largely comes from Amazon and Meta boosting QQQ.
QQQ vs XLK: Closer Than You Think
Compare QQQ and XLK across key metrics that matter to long-term investors: expense ratios, historical returns, volatility, and maximum drawdown. The "Winner" column highlights which ETF performs better on each metric.
| Metric | QQQ | XLK | Winner |
|---|---|---|---|
| Expense Ratio | 0.18% | 0.08% | XLK |
| Total Assets | $395.0B | $87.7B | QQQ |
| Number of Holdings | ~100 | ~65 | QQQ |
| 1 Year Return | +27.08% | +33.10% | XLK |
| 5 Year Return | +91.41% | +113.78% | XLK |
| 10 Year Return | +482.59% | +586.97% | XLK |
| Volatility (3Y) | 14.3% | 17.1% | QQQ |
| Max Drawdown | -81.1% | -80.5% | XLK |
| Current Price | $593.72 | N/A | — |
Growth of $10,000
The table below shows what $10,000 invested at different points in time would be worth today. The chart visualizes long-term growth starting from the same inception date for both ETFs.
The Hidden Overlap — And the Stocks That Make the Difference
QQQ and XLK look similar on the surface — both are dominated by Apple, Microsoft, and NVIDIA. But the differences in their selection methodology create meaningful gaps:
In QQQ but NOT in XLK
- Amazon — classified as Consumer Discretionary
- Meta (Facebook) — classified as Communication Services
- Alphabet (Google) — classified as Communication Services
- Netflix — classified as Communication Services
- PepsiCo, Costco, T-Mobile — non-tech NASDAQ listings
In XLK but NOT in QQQ
- Accenture — NYSE-listed IT services
- IBM — NYSE-listed (not on NASDAQ)
- Automatic Data Processing — NYSE-listed payroll tech
- Other NYSE-listed tech companies that aren't on NASDAQ
The Amazon/Meta/Google effect: These three companies alone can account for 15-20% of QQQ. When they perform well (as in 2023's "Magnificent 7" rally), QQQ pulls ahead of XLK. When they lag, QQQ and XLK converge.
The GICS classification trap: Amazon runs AWS (the world's largest cloud platform) but is classified as a retailer. Google builds AI models but is classified as a media company. XLK misses these tech powerhouses because of arbitrary sector boundaries that haven't kept up with how these companies actually make money.
Monthly Returns Comparison
These heatmaps reveal the month-by-month performance patterns of each ETF. Green indicates positive returns, red indicates negative returns, with darker colors showing larger moves. Use these to identify volatility patterns — notice how QQQ and XLK often move together since they share many top holdings, but diverge when Amazon, Meta, or Google have outsized months.
QQQ Monthly Returns
XLK Monthly Returns
Exchange Listing vs Sector Classification
QQQ (NASDAQ 100)
- • Selected by NASDAQ exchange listing
- • Includes Amazon, Meta, Google (not in tech sector)
- • ~100 holdings across multiple sectors
- • Higher exposure to internet/e-commerce
- • Often called "tech" but includes consumer and healthcare names
XLK (Technology Select Sector)
- • Selected by GICS technology classification
- • Pure tech sector — no Amazon, Meta, or Google
- • ~65 holdings, all classified as tech
- • Higher concentration in Apple & Microsoft (often 40%+ combined)
- • True tech sector ETF for sector rotation strategies
Same Tech, Different Filters
Choose QQQ for broader "tech-adjacent" exposure that includes internet, e-commerce, and communication services. Choose XLK for a pure technology sector bet, especially if you're doing sector rotation. The key difference is that QQQ includes Amazon, Meta, and Google while XLK doesn't.
Alternatives to Consider
NASDAQ 100 Alternatives
- QQQM — Invesco NASDAQ 100 ETF (lower expense ratio than QQQ)
- ONEQ — Fidelity NASDAQ Composite (broader NASDAQ exposure)
- TQQQ — ProShares UltraPro QQQ (3x leveraged, for traders only)
- FNCMX — Fidelity NASDAQ Composite Index Fund (mutual fund)
Tech Sector Alternatives
- VGT — Vanguard Information Technology (350+ holdings, more diversified)
- FTEC — Fidelity MSCI Info Tech (low-cost at 0.08%)
- IGV — iShares Expanded Tech-Software (software focused)
- IYW — iShares US Technology (broader tech)
Frequently Asked Questions
What is the difference between QQQ and XLK?
QQQ selects stocks by NASDAQ exchange listing (includes Amazon, Meta, Google), while XLK selects by GICS technology sector classification (excludes them). QQQ is broader with ~100 holdings across multiple sectors; XLK is a pure tech sector ETF with ~65 holdings.
Why doesn't XLK include Amazon and Google?
GICS classifies Amazon as Consumer Discretionary and Google/Meta as Communication Services. XLK only holds companies classified as Information Technology, so these major companies are excluded despite being widely considered "tech" stocks.
Which is more diversified, QQQ or XLK?
QQQ (~100 holdings across multiple sectors) is more diversified than XLK (~65 holdings in the tech sector only). QQQ includes consumer, healthcare, and communication services companies alongside tech.
What is the expense ratio for QQQ vs XLK?
QQQ has an expense ratio of 0.18%, while XLK has an expense ratio of 0.08%.
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Last updated: 3/15/2026