Brompton Stock is a term used to refer to stocks of exchange-traded funds. These funds consist of a group of securities traded on a stock exchange. They are designed to track the performance of a specific index or asset class. Synonyms for the term Brompton Stock include ETFs, exchange-traded funds, index funds, and passive funds. These terms are used interchangeably and are used to describe the same investment vehicle. Investors can use Brompton Stock or any of its alternative names to invest in a diverse portfolio of securities in a convenient and cost-effective way.