What's the most common mistake when comparing funds?

Comparing different time windows or mixing gross and net-of-fee numbers, then reading only the ending total. Same start date, net of fees, dividends reinvested, and read drawdown plus calendar years too.

Is one fund always better than another?

No. Past numbers describe what happened; which fits you depends on your goals and risk you can live with. SeeFund shows history as history, never as a forecast.

How to compare two funds fairly

Q: Can I compare VOO and QQQ?

Yes — but know what you're comparing. They hold different slices of the market (broad S&P 500 vs the Nasdaq-100), so their returns and drawdowns differ partly because they're different bets, not because one is 'better'. Compare within the same window and net of fees, and look at worst years.

SeeFund · educational series · 2026-09-08

“VOO vs QQQ — which is better?” is one of the most asked questions in investing, and it’s usually answered badly: someone compares a 5-year number against a 10-year number, or mixes fees, or reads only the happy ending. This is the checklist that keeps a comparison honest.

The fair-comparison checklist

Same window. Start both funds on the same date and hold to the same end. Different windows = different markets = not a fair fight.
Same kind of fund — and say what it is. VOO is a broad S&P 500 fund; QQQ is a Nasdaq-100 (big tech–heavy) fund. The returns differ partly because they’re different bets. Compare within a category first.
Net of fees. The fee is part of what you keep. Compare after the expense ratio, not before.
Dividends reinvested. Otherwise dividend funds look worse than they were. Same assumption for both.
Read drawdown and calendar years, not just the total. A higher total with a 50% drawdown is a different ride from a steadier one.
Watch the window sensitivity. One lucky start year can flatter a fund. Look at a few start points and the 1/3/5/10-year rows.

Worked example: the fair way to read it

If VOO returned +100% total over a decade and QQQ +300%, the honest takeaway is not “QQQ is 3× better”. It’s: over this exact decade, in a tech-heavy rally, the Nasdaq-heavy fund grew more — and fell harder in the down years (check its worst drop and 2022). Whether that trade-off fits you is your call, not the chart’s.

Any single summary number — total, annualized, Sharpe — is one lens. The fair comparison stacks return and drawdown and fees and calendar years, on the same window.

FAQ

Can I compare VOO and QQQ?

Yes — with context. They hold different slices of the market, so differences partly reflect different bets. Compare on the same window, net of fees, and read the worst years.

What’s the most common comparison mistake?

Mismatched windows or gross-vs-net numbers, then reading only the ending total. Same start, net of fees, dividends reinvested, plus drawdown and calendar years.

Is one fund always better?

No — past numbers describe what happened; fit depends on your goals and risk tolerance. History is shown as history, never as a forecast.

Run any two funds side by side on the same window — return, per-year, drawdown, and the worst years for each: open SeeFund → Compare.