Which of the following is a risk associated with stock investments?

Investing in stocks inherently comes with various risks, and market volatility is a significant factor that affects stock prices. Market volatility refers to the fluctuations in the price of stocks over time. This volatility can be influenced by a multitude of factors, including economic indicators, geopolitical events, company performance, and overall market sentiment.

When stock prices are volatile, investors may see significant gains or losses in value over short periods. This unpredictability is a crucial risk because it means that while there is potential for high returns, there is also the possibility of substantial losses. Thus, understanding and navigating market volatility is essential for anyone considering stock investments, as it directly impacts the investment's value and the investor's strategy.

Other options, like guaranteed returns and fixed interest rates, pertain more to investments considered lower risk, such as bonds or saving accounts, and they do not align with the nature of stock investments. Similarly, not having ownership in a company is not accurate for stock investors, as owning stocks typically signifies ownership stake in that company.