Read the fine print.
An ETF has an ownership cost, a trading cost and a return path. These four source-reviewed guides help separate them before comparing funds.
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What does duration tell me about a bond ETF?
Duration estimates sensitivity to interest-rate changes. Higher duration generally means a larger price response, not a maturity date or a complete risk measure.
Updated 2026-10-16
Are ETF distributions always tax-free or ordinary income?
No. Distribution treatment depends on its tax character and your circumstances. In a U.S. taxable account, ordinary dividends, qualified dividends, capital-gain distributions and return of capital have different rules.
Updated 2026-10-16
How does trading an ETF differ from buying a mutual fund?
Retail ETF investors trade at market prices; mutual fund investors generally transact at the next calculated NAV, adjusted for applicable charges. Trading structure and portfolio strategy are separate choices.
Updated 2026-10-16
What does an ETF expense ratio actually cost?
An expense ratio expresses annual fund operating expenses as a percentage of average net assets. It reduces the value of the fund rather than arriving as a separate annual bill. It is important, but it does not include every cost of owning or trading an ETF.
Updated 2026-10-16
How do index ETFs differ from active ETFs?
An index ETF seeks to track a specified benchmark. An active ETF permits discretionary selection within its mandate. Neither label promises diversification, low costs or superior returns.
Updated 2026-10-16
Why can leveraged ETF returns diverge over several days?
Most leveraged and inverse ETFs target a multiple over a single daily measurement period. Compounding across resets means a longer holding-period return can differ substantially from that multiple.
Updated 2026-10-16
What does an ETF premium or discount to NAV mean?
A premium means an ETF's market price exceeds its net asset value per share; a discount means the price is below it. Compare values from compatible times. A discount is not automatically a bargain, and the creation-redemption mechanism does not guarantee that gaps disappear.
Updated 2026-10-16
What should I read before comparing ETF holdings?
Start with the exact fund identity and current prospectus, then reconcile the strategy and risks with dated holdings and shareholder reports. A portfolio snapshot cannot replace the mandate or establish current positions.
Updated 2026-10-16
What does an ETF bid-ask spread cost when you trade?
The spread is the difference between the best quoted ask and bid. Buying at the ask and immediately selling at the unchanged bid loses the full spread before commissions. A quoted spread describes trading conditions at a moment, not a guaranteed price for every order size.
Updated 2026-10-16
How do tracking difference and tracking error differ?
Tracking difference describes the return gap between a fund and its benchmark over a stated period. Tracking error describes the variability of periodic return gaps under a specified calculation. A fund can lag consistently with low variability, so the two measures answer different questions.
Updated 2026-10-16
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