Mutual funds allow investors to pool their money together into a professionally managed portfolio that invests in stocks, bonds, and other securities, providing diversification and returns while requiring less expertise than investing in individual securities. The advantages include increased diversification, daily liquidity, professional management, and access to larger investments, while the disadvantages are fees, less control over timing of gains, unpredictable income, inability to customize, and potentially lower gains. RK Global offers a one-stop solution for all investment needs through its mutual fund distribution license, aspiring to serve clients of all types.