“If I could only buy one US ETF, is VOO or QQQ better?” There's no single right answer. But once you understand how the two differ, the ratio that fits you becomes clear. This guide compares the two ETFs on fees, dividends, sectors, returns, and taxes — all from the perspective of a Korean resident.
Check VOO's holdings in the S&P 500 weighting tool →
VOO vs QQQ in one line: what's the difference
- VOO tracks the S&P 500. It spreads across roughly 519 US large-cap stocks, so it's close to "the entire US economy."
- QQQ tracks the Nasdaq-100 — about 104 stocks with a much heavier tech tilt. It leans toward a bet on "US innovation companies."
- The core difference is diversification vs concentration. If you're chasing returns, you lean QQQ; if you want stability and breadth, you lean VOO.
Expense ratio and dividend yield
For long-term investing, the expense ratio is a hidden cost that compounds away at your returns. QQQ converted from a UIT (unit investment trust) structure into an open-end ETF in 2025, cutting its fee from 0.20% to 0.18% — but it's still 6× more expensive than VOO.
| Item | VOO (S&P 500) | QQQ (Nasdaq-100) |
|---|---|---|
| Expense ratio (annual) | 0.03% | 0.18% |
| Dividend yield (annual) | ~1.03% | ~0.38% |
| Underlying index | S&P 500 | Nasdaq-100 |
VOO has a lower fee and pays more in dividends. QQQ, by contrast, pays little in dividends — instead its companies reinvest earnings and return value through share-price growth. If you want dividends as cash flow, VOO fits; if you're focused on growth, QQQ fits.
Number of holdings and sector concentration: diversification vs concentration
The number of holdings alone hints at the difference in character. VOO holds about 519 stocks; QQQ about 104. More important is the sector tilt.
| Item | VOO (S&P 500) | QQQ (Nasdaq-100) |
|---|---|---|
| Number of holdings | ~519 | ~104 |
| Technology (IT) sector weight | ~35% | ~61% |
QQQ has well over half its weight concentrated in the tech sector. That's explosive in a tech bull market, but it means QQQ swings hard whenever tech wobbles. VOO's IT weight of 35% is hardly small either, but it's diluted across financials, healthcare, energy and more, which cushions the shocks.
Check QQQ's top-holding concentration in the Nasdaq-100 weighting tool →
Long-term historical returns, volatility, and max drawdown
The past decade belonged to tech stocks, and QQQ trounced VOO.
| Period | VOO annualized | QQQ annualized |
|---|---|---|
| Last 5 years | ~14.1% | ~17.9% |
| Last 10 years | ~15.6% | ~21.8% |
On a dividend-reinvested basis, QQQ beat VOO by roughly 5–6 percentage points per year. But high returns come with high volatility. The historical max drawdown (MDD) makes the difference stark. QQQ plunged about −83% during the dot-com bust (2000–2002), while VOO / the S&P 500's worst drawdowns during the global financial crisis and COVID were around −34%.
In other words, QQQ is an asset that demands you accept "it could get cut in half once every two or three years." Past returns don't guarantee the future, and there's no guarantee that the last decade's extreme tech outperformance repeats over the next ten years.
Taxes for Korean residents: 22% overseas-ETF capital gains tax and 15% dividend withholding
A Korean resident who buys US-listed ETFs like VOO and QQQ directly needs to know two taxes.
- Capital gains tax on trading profits: Your gains and losses over the year are netted, a ₩2.5M basic deduction is subtracted, and the excess is taxed at 22% (20% national + 2% local). Because it's taxed separately (분리과세 — taxed in isolation, not rolled into your other income), it isn't included in financial-income aggregate taxation (금융소득종합과세 — the regime that lumps large interest/dividend income into your global progressive rate).
- Dividend withholding: Under the Korea–US tax treaty, US dividends are withheld at 15% rather than the standard 30%.
Mind the filing window too. The capital gains tax filing deadline for 2025 overseas stock/ETF gains is normally in May, but for 2026 the last day fell on a Sunday, so it was extended to Monday, June 1.
VOO, with its higher dividends, incurs more withholding — but its capital gains tax burden is relatively light when trading profits aren't large, thanks to the ₩2.5M basic deduction. Estimating your tax in advance based on your expected gains makes it much easier to compare net (after-tax) returns.
Picks by risk profile: 100% VOO, 100% QQQ, or a blend
| Profile | Suggested ratio | Why |
|---|---|---|
| Stability/diversification first, long-term accumulation | 100% VOO | Low fee, broad diversification, steady dividends |
| Can stomach volatility, betting on growth | 100% QQQ | Tech concentration, past return edge (but large MDD) |
| In between (most employees) | VOO 70 / QQQ 30 | Diversification as the base, with a dash of growth |
The right answer comes down to whether you can ride out an −83% drawdown. If you're not confident you can, raising your VOO weight actually does more to protect your long-term returns. Once you've settled on a ratio, the surest way to decide is to backtest it yourself with historical data.
Compare VOO and QQQ accumulation returns directly in the backtest tool →
Frequently asked questions
Q. As a Korean investor, is it better to buy US-listed VOO/QQQ directly, or to buy Korea-listed ETFs? A. In tax-advantaged accounts (Pension Savings, IRP — a personal retirement pension account, ISA — Individual Savings Account, a tax-favored wrapper), Korea-listed ETFs are often better; for long-term investing in an ordinary taxable account, buying US ETFs directly is often more favorable. Direct US purchases let you use the ₩2.5M annual basic capital-gains deduction every year.
Q. QQQ has higher 10-year returns — can't I just buy QQQ only? A. Past returns don't guarantee the future. QQQ fell about −83% during the dot-com bust. If you can't endure that stretch and sell, it ends not as a gain but as a large loss. The first question is whether you can stomach the volatility.
Q. If I buy both, won't the holdings overlap? A. They overlap in part. Mega-cap tech names like Apple, Microsoft, and Nvidia are in both indexes. So blending VOO and QQQ ultimately raises your overall mega-cap-tech weight — set your ratio with that in mind.
Q. Isn't QQQ's low dividend a downside? A. Not necessarily. In exchange for paying less in dividends, its companies reinvest earnings and return value through share-price gains. That said, for an investor who wants cash flow (dividends), VOO — with its ~1.03% yield — is a better fit.
Q. Does buying on a schedule reduce volatility? A. Dollar-cost averaging (DCA) — buying a fixed amount each month — levels out your average purchase price and reduces the risk of buying at a peak. But it doesn't eliminate the index's own downside risk, so consider it alongside your overall asset allocation.
This article is for informational purposes only; investment returns and taxes can vary by individual circumstances. The final responsibility for investment and tax decisions rests with you, and it's wise to consult a professional for important decisions.
Related tools
- S&P 500 weighting tool — VOO's top holdings, weights, and real-time prices
- Nasdaq-100 weighting tool — check QQQ's holding concentration
- Stock backtest — compare VOO and QQQ accumulation returns
- Compound calculator — simulate future value from long-term accumulation