QQQ vs SPY: Nasdaq-100 vs S&P 500 — What’s the Difference?

Summary

QQQ and SPY are two of the most widely followed U.S. ETFs, but they track different indexes.

Invesco QQQ

→ tracks the Nasdaq-100

State Street SPDR S&P 500 ETF Trust (SPY)

→ tracks the S&P 500

The differences affect:

• Number of companies;
• Sector composition;
• Technology concentration;
• Financial exposure;
• Fees;
• Growth characteristics.

As of 2026:

QQQ's 0.18% fee is published by Invesco, while State Street lists SPY's gross expense ratio at 0.0945%.

What Does QQQ Track?

QQQ tracks the Nasdaq-100.

The index is designed to represent 100 of the largest eligible non-financial companies listed on Nasdaq.

This produces significant exposure to:

• Technology;
• Communications;
• Consumer growth;
• Healthcare;
• Innovation-focused companies.

What Does SPY Track?

SPY seeks to track the price and yield performance of the S&P 500.

S&P Dow Jones Indices says the S&P 500 includes 500 leading companies and covers approximately 80% of available U.S. market capitalization.

State Street describes the S&P 500 as a diversified large-cap index spanning all eleven GICS sectors.

QQQ vs SPY: Sector Concentration

This is one of the biggest differences.

Invesco reported that QQQ's average Technology weight in June 2026 was 67.29% under its reporting classification.

State Street's S&P 500 sector data showed Information Technology at approximately 36.83% as of July 27, 2026.

The exact percentages change, but the direction is clear:

QQQ has materially greater technology concentration than SPY.

Do QQQ and SPY Own the Same Companies?

Many major holdings overlap.

For example, both have significant exposure to companies such as:

• NVIDIA;
• Apple;
• Microsoft;
• Amazon;
• Alphabet;
• Broadcom;
• Meta.

State Street's July 2026 SPY data shows these companies among its largest holdings.

The difference is mainly how much weight each ETF assigns and which additional companies are included.

Why SPY Is Broader

SPY includes companies across:

• Technology;
• Financials;
• Healthcare;
• Industrials;
• Consumer sectors;
• Energy;
• Utilities;
• Real estate;
• Materials;
• Communications.

QQQ is much more concentrated in growth-oriented Nasdaq companies.

Therefore:

SPY is not “the opposite of technology.”

It simply has broader sector exposure.

Financial Stocks Are a Major Difference

The Nasdaq-100 is designed around non-financial companies.

SPY includes large financial institutions.

State Street's July 27 sector data showed financials at approximately 12.6% of the S&P 500.

This means banks and insurers can materially influence SPY while having far less direct impact on QQQ.

QQQ vs SPY: Fees

QQQ:

0.18%

SPY:

0.0945%

For a hypothetical $10,000 investment:

QQQ:

approximately $18 per year

SPY:

approximately $9.45 per year

before changes in asset value.

The difference is relatively small in absolute dollars but compounds over long periods.

Which Has More AI Exposure?

Both have significant AI exposure because many of the world's largest AI-related companies are included in both indexes.

However, QQQ typically gives those technology and semiconductor businesses higher aggregate weighting.

This makes QQQ potentially more sensitive to:

• AI capital spending;
• GPU demand;
• Cloud computing;
• Semiconductor cycles.

Which Is More Diversified?

SPY is broader by:

• Company count;
• Sector count;
• Financial exposure.

QQQ still spreads risk across many companies, but Invesco formally describes it as non-diversified for regulatory purposes and warns about concentration.

Does QQQ Always Outperform SPY?

No.

In June 2026, QQQ lost approximately 0.14% at NAV, while the S&P 500 lost approximately 0.95%, meaning QQQ outperformed that month.

But individual months or historical periods do not guarantee future leadership.

QQQ can outperform when growth and technology lead.

SPY may outperform when:

• Financials;
• Industrials;
• Energy;
• Value stocks

lead the market.

Who May Prefer QQQ?

QQQ may appeal to investors seeking:

• Greater growth exposure;
• Higher technology weighting;
• Nasdaq-100 companies;
• More concentrated exposure to innovation themes.

Who May Prefer SPY?

SPY may appeal to investors seeking:

• Broader large-cap U.S. exposure;
• All major sectors;
• Lower expense ratio;
• Less concentration in Nasdaq growth companies.

Can Investors Own Both?

Yes, but there is substantial overlap.

Owning both does not simply create two completely different portfolios.

Because the largest technology companies are present in both, investors should check the resulting combined weights before assuming the combination greatly increases diversification.

How QQQON Fits

QQQON is linked specifically to QQQ, not SPY.

The chain is:

Nasdaq-100 → QQQ → QQQON

For the underlying QQQ fundamentals, read What Is Invesco QQQ ETF?.

FAQ

Is QQQ better than SPY?

There is no universal answer. They provide different sector and growth exposures.

Which has lower fees?

SPY currently has the lower expense ratio: 0.0945% versus QQQ's 0.18%.

Which is more technology-heavy?

QQQ.

Does SPY hold financial stocks?

Yes.

Is QQQ only technology?

No.

Does QQQON track SPY?

No. QQQON is linked to QQQ.

Risk Disclaimer

Neither QQQ nor SPY guarantees profit. Both can experience substantial losses during equity-market downturns, and historical relative performance should not be treated as a forecast.