See how broad-market and targeted stock ETFs differ and when each type makes sense in a stock portfolio.
Stock ETFs are one of the simplest ways to access equity markets through a tradable fund wrapper. They can represent broad indexes, narrow sectors, styles, countries, or themes. That range is useful, but it also means the label “ETF” is not enough information by itself. A broad-market ETF and a concentrated sector ETF are both ETFs, yet they serve very different portfolio roles.
This section separates the two most common stock-ETF categories in this guide: broad index ETFs and more concentrated sector or industry ETFs. The first is usually used for core exposure. The second is more often used for tactical, thematic, or portfolio-tilt decisions.