The Vanguard Small-Cap ETF is an exchange-traded fund that focuses on investing in small-cap companies, which are typically defined as companies with a market capitalization between $300 million and $2 billion. This ETF aims to provide investors with exposure to a diverse range of small-cap stocks, which can offer growth potential as these companies expand. Investing in the Vanguard Small-Cap ETF allows individuals to gain access to a broad portfolio of small-cap stocks without having to buy each one individually. It is designed for investors looking for long-term growth and is known for its low expense ratio, making it a cost-effective option for those interested in small-cap investments.