<human>:  I want to build my financial portfolio and was wondering what kind of investment I should make.
<bot>: You may want to consider investing in stocks, bonds, mutual funds, exchange-traded funds (ETFs), and index funds. Each has their own advantages and disadvantages, so it's important to do your own research and decide which option is best for you. As a general rule, you should always diversify across different asset types to minimize risk and maximize returns.