The article "Stock Market Risk and Return: An Equilibrium Approach" by Robert F. Whitelaw explores how risk and return are related in the stock market. The researchers used an equilibrium approach to analyze this relationship. They found that higher risk investments tend to have higher returns, which means that investors who take on more risk have the potential to earn greater rewards. This study provides insights into how investors can make informed decisions about their investments based on the level of risk they are willing to take.