Mutual funds often offer their shareholders the opportunity to reinvest their income or capital gains into the fund without incurring any sales charge. This feature is known as the reinvestment privilege and allows shareholders to acquire more shares of the fund, thereby increasing their ownership stake. This can be a beneficial option for investors looking to grow their portfolio without incurring additional fees. As a knowledgeable finance professor, I highly recommend considering the reinvestment privilege when evaluating mutual fund investment options.