Today, investment opportunities are seemingly endless, especially with the advent of crypto and equity crowdfunding. The best way to get acquainted with new investment opportunities is first to understand how they work and then find the ones that fit your needs. Credit risk: Risk that the company itself will fail. Unlike stocks, most mutual funds (open-end funds) can only be sold (redeemed) once a day at the end of the day. REITReal estate investment trusts ("REITs") are similar to mutual funds in how they pool money from groups of investors.