What is ETF?

An Exchange-Traded Fund (ETF) is a pooled investment vehicle that holds a collection of underlying assets (such as equities, bonds, currencies, or commodities) and trades on national stock exchanges throughout the trading day at market-determined prices. Governed primarily by the Investment Company Act of 1940, the regulatory environment for ETFs was modernized by the Securities and Exchange Commission (SEC) in 2019 under Rule 6c-11. This rule established a standardized framework, allowing most ETFs to enter the market without obtaining individual exemptive orders. Unlike traditional mutual funds, which are bought and sold directly through the fund company at a single end-of-day Net Asset Value (NAV), ETFs offer intraday liquidity, allowing investors to buy or sell shares at fluctuating prices during standard market hours.

A key structural advantage of ETFs is their high tax efficiency, driven by the unique 'in-kind' creation and redemption process. This mechanism is managed by institutional market makers known as Authorized Participants (APs), who assemble baskets of the fund’s underlying securities and exchange them directly with the ETF for blocks of ETF shares (and vice versa). Because these transactions are executed as swaps of physical assets rather than cash sales, they do not trigger taxable capital gains events for the fund. When retail investors redeem their holdings, the AP absorbs the trade on the secondary market, which prevents the ETF from having to liquidate underlying assets and distribute capital gains taxes to its remaining shareholders. Consequently, ETFs typically feature lower expense ratios and fewer annual capital gains distributions than actively managed mutual funds.