Index Funds and ETF Basics

Index fund, index investing, and exchange-traded fund terms used in passive investing.

Index Funds and ETF Basics terms describe exchange-traded funds, index products, ETF trading mechanics, creation and redemption, and specialized exchange-traded exposures.

Use this branch when the fund trades on an exchange or tracks an index, commodity, currency, sector, country, leveraged, inverse, or specialty exposure.

Key Terms in This Branch

TermUse it for
Index FundA fund type or mandate term used to classify portfolio exposure.
Index Fund InvestingA fund type or mandate term used to classify portfolio exposure.

What to Check

Check index methodology, holdings, creation and redemption process, bid-ask spread, premium or discount, tracking difference, leverage or inverse reset terms, and tax treatment.

Common Mistakes

  • Assuming an ETF always trades exactly at NAV.
  • Ignoring bid-ask spread, tracking difference, and creation-redemption mechanics.
  • Holding leveraged or inverse ETFs without understanding reset behavior.
  • Treating a familiar ETF brand as a substitute for reading the fund objective.

This page is educational and does not recommend a specific fund, security, tax treatment, or account choice.

In this section

Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.

Index Fund

An index fund seeks to track a benchmark through replication or sampling; compare methodology, holdings, tracking, costs, structure, and risks.

ETF Brands
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