Any transaction relating to mutual funds will be conducted at the end of the day based on the fund’s NAV or net asset value. Some mutual funds may have a minimum holding period before you can sell shares since they are usually meant to be long-term investments. Those who sell mutual funds before the minimum holding period are subject to fees and other consequences.  In short, mutual funds may make a great investment for your portfolio depending on your goals. These investments are well-diversified and optimized for long-term investing.