"Buy and hold" is an investment strategy where an investor purchases stocks or other assets and holds onto them for a long period, regardless of market fluctuations. This approach is based on the belief that, over time, the value of the investment will increase, leading to potential profits. Investors who use the buy and hold strategy often focus on the long-term performance of their investments, rather than trying to time the market. This method can reduce transaction costs and minimize the stress of daily market changes, making it a popular choice among retail investors and financial advisors.